DESIGNING SUSTAINABLE CONSTRUCTION PROCESS TO REDUCE BEACH EROSION

 

Table of Contents

Chapter 1: Introduction. 5

1.1 Introduction. 5

1.2 Motivations for the Research. 5

1.3 The Significance of the Study. 5

1.4 Research Question. 6

Research Objective. 6

Research Question. 6

Sub-question. 7

1.5 Research Design. 7

1.6 Theoretical Orientation. 8

1.7 Expected Findings and Applications. 8

1.8 Structure of the thesis. 8

1.9 Conclusion. 9

Chapter 2: Literature Review.. 10

2.1 Introduction. 10

2.2 Coastal Erosion. 10

2.3 Causes of Coastal Erosion. 10

2.4 Impact of Coastal Erosion on Environment 11

2.5 Human Causes of Coastal Erosion. 13

2.6 Different Methods in Ensuring Coastal Development 14

2.7 Challenges Face in Developing Methods Used In Reduction of Beach Erosion. 16

2.8 Present methods used in ensuring sustainable coastal development 17

2.9 Sustainable Construction to Prevent Beach Erosion. 18

2.10 Literature Gap. 19

2.11 Conceptual Framework. 20

2.12 Conclusion. 21

2.13 Summary of References. 21

Chapter 3: Methodology. 23

3.1 Overview on the research. 23

3.2 Research Hypothesis. 23

3.3 Research Question. 23

3.4 Analysis on research Design. 24

Research philosophy. 24

Research approach. 24

Research design. 25

Research method. 25

3.5 Instrumentation. 25

Research Hypothesis. 25

Research Questions. 25

Utilisation of Instrumentation. 25

3.6 Secondary data collection. 27

3.8 Ethical considerations. 28

3.9 Methodology limitation. 28

3.10 Conclusion. 28

Chapter 4: Analysis of researched data. 29

4.1 Introduction. 29

4.2 Data. 29

4.3 Findings. 30

4.3.1 Theme 1: Development of civil infrastructures and use of other artificial methods. 31

4.3.2 Theme 2: Use of natural resources. 38

4.4 Discussion. 42

4.5 Conclusion. 43

Chapter 5: Findings and Conclusion. 44

5.1 Introduction. 44

5.2 Motivation and significance of the thesis. 44

5.3 Findings and discussion of the research question. 45

5.4 The contributions of this study. 45

5.5 Future research and limitations of the study. 46

5.6 Conclusion. 46

References & Resources. 48

 

 

 

Chapter 1: Introduction

1.1 Introduction

Coastal erosion along with accretion are the natural process however, they become widespread as well as anomalous in coastal zones. This chapter is premised on providing the overall, idea regarding the entire research such as the purpose of this research, expected outcomes, significance, research design so that structure of this research can be established in an effective manner.

1.2 Motivations for the Research

The coastal area is considered as a dynamic place and its dynamism can create susceptible measure to changes and stresses in a various way. As costal area interacts with sea, so it gives a great opening to action of waves, wind, currents, tides which not only erode shore but also have possibility to expand it with sedimentary deposits. Coastal erosion is removal of beach and wearing a way of land or dune sediments. Therefore coastal erosion can be assumed as large proportion in present days. Change in global climate can be coupled with local attributes that is eroding world coast in alarming proportions.

Maximum number of conventional protection methods is short lived, hard, friendly and expensive. The trend of protection and mitigation of coastal erosion has been changing towards novel, eco-friendly and soft methods. Beach erosion rate is increasing in present days because of Natural process and anthropogenic activities. Coastal erosion impact on various arena such as loss of habitat, landscape and beach quality; loss of infrastructure, building facilities like power lines, roads; increased water turbidity, coral reef degradation because silt deposition; reduced tolerance to acclimatize oneself with natural hazards; collapse tourism in area; frequent flooding in lower land areas. To prevent all this implications, complete sustainable plan is required and aim of this research study is to identify.

1.3 The Significance of the Study

Good chunks of the costliness across the world are eroding severely and rates of coastal erosion may differ with other countries. On that note, rate of coastal; erosion in USA can vary from 0.3 m to 0.6 m per year and US East Coast barriers can get the experience several coastal erosion during last 100 years. This study can help to evaluate different factors of coastal erosion and its impact. In order to reduce coastal erosion, sustainable construction is required to protect shorelines. Development of coastal area has enhanced to protect from beach erosions. In this way, it can help to manage the coastal erosion problems and reduce the coastal capacity. This study would help to analyze different challenges and provide recommendations to overcome from this issue.

1.4 Research Question

Research Objective

      To identify effective cause of coastal erosion

      To evaluate impact of coastal erosion

      To determine the limitations of current protection and mitigation methods used in reduction of coastal erosion

      To design sustainable construction process in order to reduce coastal erosion addresses all the limitations present in current method.

Research Question

1.     What are the effective causes of coastal erosion?

2.     How coastal erosion impact on human and environment?

3.     What are the limitations of current protection and mitigation methods used in reduction of coastal erosion?

4.     What is new sustainable construction process to reduce coastal erosion address all the limitations present in current method?

Sub-question

       What are the effective causes of coastal erosion?

      What is coastal erosion?

      How many types of coastal erosion present till date?

      How coastal erosion takes place?

      What are the limitations of current protection and mitigation methods used in reduction of coastal erosion?

      What is the present construction methods used in reduction of coastal erosion?

      Common challenges in developing sustainable process to reduce the coastal erosion?

      What is new sustainable construction process to reduce coastal erosion address all the limitations present in current method?

      How to mitigate the coastal erosion issue in the existing method?

      How to design a new coastal erosion mitigation process?

1.5 Research Design

For this research study research will consider descriptive design which includes independent and dependent variable at a same time. This process will help to control the variables during the research process. Including this design will help the researcher to gather more statistical data from the resources and interpret the research topic in an advantageous way. As the research is considered with secondary research the research will require more relevant data from secondary sources therefore this research design will be taken for this research. This will help to gather rich elements of the research study from the relevant sources. For this research study research is going to select post positivism philosophy because it will help in enabling the analytical knowledge of research on real life facts of follows and research in a very logical way in order. For this research study researcher will use deductive approach as it will provide greater concern in developing hypothetical knowledge. As this research will require thematic analysis therefore research needs to consider different theories for the research study.

1.6 Theoretical Orientation

Coastal erosion can be defined sax several processes of long terms removal of the sediment along with rocks at coastline that may lead to loss of lands as well as retreat of coastline landwards. Coastal erosion happens due to hydraulic action, impact, abrasion, corrosion by water, wind, and natural. In this case, rocky structures are subjected to erosion of coastline cause by rocks and sans stirrer up and carried within waves.

1.7 Expected Findings and Applications

Coastal environments make consistent transitions therefore reshaping is a continuous process in coastal areas by the natural forces of tides, erosion, storm surges and deposition. In order to make it sustainable coastal development program requires a clear understanding of following natural process such as

      Serves developer and societal need.

      This needs to provide good internal functionality in respect to marine elements like lagoons and beaches.

      This development plan needs to be a part of an overall development plan for the selected area.

      Development plan must aims to have very less impact on environment while operating and construction.

      This plan must utilize natural conditions at the site instead of planning against nature.

      The plan needs to be flexible enough to adaptation allowance due to climate change consequences

1.8 Structure of the thesis

Figure 1.1: Structure of Thesis

(Source: Created by Learner)

1.9 Conclusion

This chapter was premised on describing entire overview of research works including expected outcomes. In this case, the purpose of this research and its appropriate research design helped to establish the concept of coastal erosion from several secondary resources. On that note, structure of these has been given to provide an idea about entire research work so that learner can easily understand about the content.

Chapter 2: Literature Review

2.1 Introduction

Coastal erosion is a global problem, which affects the sea and coastal line of many countries. Coastal erosion happens for many reasons; it may be natural reason or human reason. It also can be prevent by applying the proper process. Impact of coastal erosion is dangerous; nature as well as humans suffers this. Different method should be used to prevent beach erosion and sustainable construction process should be used to reduce beach erosion. New solution should be invented to prevent this erosion. Countries which are near coastlines suffer more; they lose their physical properties like road, house, and school. Countries like United States of America, India, England also suffers this problem, and they also have found a solution to prevent this beach erosion (Addo, 2018). Before this lots of people have researched about beach erosion, but still there are gaps. Proper study should be done and new technologies should be found out to save human beings, animals and nature.

2.2 Coastal Erosion

Coastal erosion is sudden or ongoing process which happens on the shoreline. Bedrock or sediment removes from the shoreline due to many reasons, which cause the loss of coastal land (Addo and Addo, 2016). Coastal erosion is mainly two types: rapid onset hazard and slow onset hazard. In rapid onset hazard process coastal erosion happens very quickly, a large amount of coastal land just vanish under a day or under a week. The second type is slow onset hazard which is a slow process. In this process nature loose coastal land over many years or decade even sometimes over centuries. Beach erosion is a natural phenomenon which can be happen by human activity or by natural reason. Beach erosion removes sand from the beach and the beach becomes narrower. Beach erosion is a great threat to mankind as well as to the nature. Specially countries like United States have major issue about coastal erosion because coastal erosion is a great threat to physical properties like road, house.

2.3 Causes of Coastal Erosion

Coastal erosion happens mainly for two reasons: Natural reason and human reason. There are many types of coastal erosion by nature but main reason is wave. Sometimes wave is a great threat to coastal land and stronger the wave, more damage it will do to the land. Coastal erosion also depends on sand or the rock, if the rock has less resistance like clay, it will damage more. Granite type rock which has more resistance power is safe for coastal land. Waves also carry rock, sand etc with it and come in contact with coastal land, rock or sand. It makes a sand paper type effect and it grinds away. Attrition is also a cause of beach erosion; it happens when small rocks collide with each other and causes abrasion (Alves et al. 2015). Wind is another cause of beach erosion, it damages land along and sometimes it accelerate the wave and cause beach erosion. Humans are also responsible for beach erosion and are great threat to the nature and coastal land. Construction of jetties and harbour, mining seawater is the main reason for beach erosion by human being.

Natural process of coastal erosion : High wind and strong waves play a most important role in beach erosion at the time waves breaks ground fragments and strike beaches, here sand blows the sand to wash over and breaking of sand berg. Apart from this offshore loss at the time of storm and extreme wave surge conditions. Some other natural reasons are loss of sand canyons, reef collapse and beach rock, long term and seasonal variations in climate and wind pattern, sea level changes, high floods and rainfall, due to seismic activities seafloor changes which result long waves.

Anthropogenic processes of coastal erosion: Mining in beach sand reduces volume of beach sand, available for littoral process; Inland coral mining affects the productive land conversion into waterlogged areas; river sand mining reduces river sand supply to beaches; collection of corals form shore face and beaches reduces beach material volume, dynamiting and reef breaking for coral mining can damage the reef and create gap in reef, it increases wave energy and reduce supply of debris to beaches; infrastructure installations and constructing building near coastal area reduces coastal stability.

2.4 Impact of Coastal Erosion on Environment

      Loss of habitat, landscape and beach quality

      Loss of infrastructure, building facilities like power lines, roads

      Increased water turbidity, coral reef degradation because silt deposition

      Reduced tolerance to acclimatize oneself with natural hazards

      Collapse tourism in area

      Frequent flooding in lower land area

Coast can be defined as land adjacent to sea. On that note, coast can be defined as a land that drains to sea or the watersheds of the streams that drain to sea directly in environmental context. In this case, beaches are affected by natural events such as storms. According to Betzold and Mohamed (2017), coastal erosion is responsible for the coastal property losses about $500 million every year that include damages to structures along with losses of lands. In order to mitigate the coastal erosion, federal government have spent average of $150 million in every year for the beach nourishment along with shoreline erosion. More than 80,000 acres of the coastal wetlands are disappeared annually due to these coastal erosions.

Figure 2.1: Impact on Environment

(Source: Climate.gov, 2016)

On the other hand, sea level rising would cause increasing number of coastal erosions. In this case, heavy or hard structure can keep shoreline positions stable. Coastal zone is depicted in this aforementioned image to describe important factor for development of society so that issues and importance of applying solutions can be understood through this analysis. Hence, international communication has been originated in coastal fringes. In this case coastal zones are vulnerable to create impacts on the nature, environment and human beings. Associated loss and erosion of land is most evident signs of instability. Negative shorelines trend causes the secondary effects that may affect society via threats to the human settlements, wetlands, harbours, marshes, coastal recreation area. According to Jonah et al. (2017), those impacts can be the reasons of increasing the consequences of several climate changes, rising sea levels.

2.5 Human Causes of Coastal Erosion

Figure 2.2: Port Blocks

(Source: Climate.gov, 2016)

Groyne is built perpendicular to shoreline with purpose of the protection section of shoreline by blocking part of littoral transports whereby sands are accumulated on upstream sides of groyne. However, sands trapping can cause deficit in littoral drift budgets along with the types of coasts protection are associated with the corresponding erosion on lee side of structure. According to Nguyen, Parnell and Cottrell (2017), port on coast must be designed in such a way so that coastal impact and sedimentation is minimal. Sedimentation occurs at harbour entrance in case of sands bypasses require maintenance deposition of dredged sands. Harbour moles of port can block littoral transport by the trapping sands at up-drift side form of accumulating sands sheets.

2.6 Different Methods in Ensuring Coastal Development

Coasts are the dynamic places along with its dynamism represent it susceptible. On that note, storm system has energy from ocean along with natural coastal forces with waves, rains and wind to damage erosive process. This coast is made vulnerable top natural dynamic forces by the rising sea levels. This entire process is accelerating due to increasing global warming. According to Obi et al. (2016), entire volume of the water levels have stored in the glaciers along with ice caps which is the reason of raising the ea levels significantly. In this case, water of oceans would expand and push the seal level higher.

Figure 2.3: Sediment Overview

(Source: Nguyen, Parnell and Cottrell, 2017)

On the other hand, population growth, resort development along with land development is the reasons of damaging the coastal areas which are recognized as a tourist spots. In order to overcome those damages, government has taken few necessary steps so that coastal area can be recoverable using advanced methods as well as technologies. According to Palalane et al. (2016), protecting coastal property is required because government of several countries have found that it would a biggest threat to valuable asset and they are trying to adopt stabilize it. In opinion of Pranzini, Wetzel and Williams (2015), jetties, ripap, sea walls, along with sandbags disrupt natural process of coast; exacerbate erosion as well as habitat destruction. Disturbing, wetland habitats, increasing the impervious surface, development in the coastal areas degrade ecosystems.

Sustainable Development

Sustainability is a concern that has been impacting coastal regions since the early 20th century. Rise in industrialization weight in coastal regions due to their accessible to oceanic reasons has greatly impacted the environmental health of the regions. Furthermore, resource exploitation is another one which is why suitable development is a vital condition for coastal development. The sustainable development method is intrinsically based on putting restrictions on the amount of oceanic resources uses per year by both private and public institutions (Ritohardoyoet al. 2017). This can lead to a less exploitable and more environmentally friendly operations regarding coastal resources.

Figure 2.4: Sea Walls

(Source: Ritohardoyo et al. 2017)

Risk Assessment

The risk assessment method of coastal development is one of the most effective ways for any nation in terms of ensuring safety and protection from natural calamities. Since coastal regions are vulnerable to tsunamis and other sea has occurred natural disasters, it is vital that risk assessment is done in order to effectively mitigate concerns regarding recovery from natural calamities. In addition, this method can also help in mitigating risk relating to manmade concerns and hazards.

2.7 Challenges Face in Developing Methods Used In Reduction of Beach Erosion

There are different types of methods to prevent coastal erosion such as soft erosions, monitoring methods and hard erosion method that are globally accepted. In this case, other methods are non-traditional approaches and all those processes face few difficulties during implementation. The major reason of facing problem is emerging growth of the tourism development in the coastal area. People are fascinating about sea beach and travel and tourism companies develop large infrastructure to make attractive coastal area. Government of several countries want to take necessary steps for preventing coastal erosion however, this process cannot be implemented done because this can affect the burdens as well as profits of those travel and tourism companies.

On the other hand, coast is dynamic in nature so that implementing effective solutions cannot be implemented. According to Yokoo and Udo (2016), reducing sand resale s by the coastal erosion can create an impact on breach loss due to the large coastal structure. There is a risk of flooding along with erosion due to the climate changes.

2.8 Present methods used in ensuring sustainable coastal development

There is three globally accepted erosion control or prevention methods are as follows

1.     Soft erosion control methods: According to Daron (2015), this strategy considers temporary options of slowing the erosion effect. Beach replenishment technique is the most popular techniques for defence management of coastal erosion. An argument raised on this note by Masria, Iskandern and Negm, (2015), this technique involves piling and importing beach sand on top of the existing sand. Sand dune management is another technique used in coastal erosion protection, it works using various methods in order to prevent the sediment loss on coastal area.

2.     Monitoring method: this method involves remote sensing, shoreline mapping, Historical mapping, video analysis, aerial photographs, and beach profiling surveys. All of the following attributes would help to gather relevant information of the beach and its changing flow and monitor that later on.

3.     Hard erosion method: in accordance with Masria et al. (2015), this is basically a hard stabilization technique by construction of groins, construction of sea walls, construction of revetments, use of rock armour, construction of gabion, construction of offshore breakwaters, cliff stabilization, construction of floodgates. These infrastructures and constructions projects help to restrict the water flow towards human communities.

In this context Natale et al. (2017), has commented that, these techniques are presently using by the Anthropology experts and construction experts. However, these techniques are failed to control and reduce coastal erosion because of few strong reasons which are responsible for limitations. New techniques are expected to be evolved through effective measurements to prevent erosion and develop a sustainable coastal area.

2.9 Sustainable Construction to Prevent Beach Erosion

Sustainable construction may involve few issues such as management, design, construction technology along with processes so that a construction can be implemented with long term monitoring and maintenance (Moore and Davis, 2015). In this case, costal area is the transitional area between seas along with land that is characterized by high biodiversity. Sustainable coastal management would require for integrating ecological along with economical productive dimension of coast. Coastal structure has constructed perpendicular to coastline from shoreline into sea for trapping long shore sediments transports or controlling the long shore current.

Beach erosion can become biggest issues in nowadays. These growing problems on coastlines expand around world. Shore is exposed and elements such as waves, sea level changes, and current can play significant roles in the causing erosion. Based on the solutions, erosion controlling mats, breakwater tubes, geo-textiles, coconut fibre log, earth barriers wall is the different solutions of sustainable constriction for prevent beach erosion. According to Yokoo and Udo (2016), erosion controlling mats are another option for protecting shorelines and it is designed growth of vegetation by the stabilizing those particular area long fir plants, roots and trees. In order to establish vegetation, mats are developed from natural fivers such straw, wood fibres and biodegradable. Breakwater Tubes are used for demanding, extending shoreline supports. After installing those tubes act like layer of defence against the waves so that they can beak shore. Geotextile has implemented using retaining walls, larger structures, and rip rap. On that note, earth barriers wall can become stabilizer barriers for the coastal restoration projects. In this case, coconut fibre logs are designed using erosion controlling along the beaches.

 

2.10 Literature Gap

Researcher has gathered essential, information from performing a survey from several secondary resources related to the topic to acquire important factors which can highlight the coastal erosions. From these journals, few of them contain causes of coastal erosion with images so that reader can understand the effectiveness of coastal erosion and its impact on human being and environment. On that note, Addo (2018) has described different reasons of generating coastal erosion whereas Alves et al. (2015) emphasises on several impacts of coastal erosion on human beings, environments and nature. According to Betzold and Mohamed (2017), Vegetate, Marshes, Seagrasses, Vegetated Dunes, Harden, are various methods of ensuring coast development whereas Kang and An (2018) opined that Bulkheads, Seawalls, Revetments, Breakwaters, Sills, Beach Nourishment are different methods of coastal development. In opinion of Moore and Davis (2015), Groins, Breakwaters, Composite Systems are several approaches of coastal development.

On the other hand, this research paper would provide different factor and reasons of coastal erosions after analyzing information from numerous secondary resources. All those aforementioned resources have focused on specific issues regarding coastal erosion however; this research paper would incorporate every issue with detailed information and statistical data. Therefore, learner can obtain a clear idea regarding this topic. On that note mote, researcher would provide few specific recommendations on the basis of technology and solutions that can be implemented in an effective manner.

Hydraulic action is sheer power of waves and it can smash against cliff (Moore and Davis, 2015). In this case, air becomes trapped in cracks in rock along with it can cause rocks to break apart. This is an essential type of coastal erosion however; many journals have not enough information regarding this. According to Yokoo and Udo (2016), author does not cover effective solutions of protecting from coastal erosion whereas Zou (2018) has explained about erosion controlling mats, geo-textiles, breakwater tubes which help to provide concentrate idea. Based on these solutions, it can be understood that effective solutions can be implemented to prevent coastal erosion.

2.11 Conceptual Framework

 


 


Figure 2.5: Conceptual Framework

(Source: Created By Researcher)

This conceptual framework has described different factors of coastal erosion so that leaner can understand easily the effects, reasons, challenges, impact of coastal erosion due to human being, environment and nature. Based on that, few solutions have been provided to protect beach erosion in an effective manner. On that note, different factors of sustainable development can be measured through few factors such as earth barriers walls, coconut fiber logs and break water tubes.

2.12 Conclusion

Erosion is a process by which strong wave action, flooding, sea level rises, human activities along with large storms such as nor easters, hurricane wear bluffs and beaches along the coastlines. This chapter has shown several reasons of generating coastal erosion and its impact towards human beings, environments. After analysing several seconds sources, researcher has explained few globally accept solution that can help to ensure coastal development.

2.13 Summary of References

Article

Author

Year

Major Findings

This article explained about different aspects of the coastal erosion along with protection in Europe

Pranzini, Wetzel and Williams

2015

Aspects of coastal erosion

This article explained about ocean wave dynamics, coastal erosion, potential sediment transports

Addo

2018

Highlighting concept regarding ocean wave dynamics, coastal erosion, potential sediment transports

This article explained about erosion management and cliff instability

Moore and Davis

2015

erosion management and cliff instability

This article explained about coastal erosion perceptions and beach management

Alveset al.

2015

coastal erosion perceptions and beach management

This article explained about coastal zones management issues and challenges including coastal sediment mining

Jonah et al.

2017

coastal zones management issues and challenges including coastal sediment mining

This article explained about development of the new coastal erosion countermeasures with the help of wave energy controlling methods

Kang and An

2018

development of the new coastal erosion countermeasures with the help of wave energy controlling methods

Table 2.1: Summary of References

(Source: Created By Researcher)


 

Chapter 3: Methodology

3.1 Overview on the research

The overview of this research is associated with designing of sustainable construction In order to minimize the coastal erosion. In maintaining the sustainable construction process, the reduction of beach erosion has to be reduced. The coastal areas create susceptible measures in changing the environment. It is considered as the dynamic process. The interaction process always goes on with the sea and the coastal areas with the reference to tide, waves, sedimentary deposits and other things. Coastal erosion has to be removed from the beaches from preventing and draining away of the land and sand dune like sediments. In the overview of the natural process and for managing conventional protection, it is needed to keep in mind for the eco friendly and different other methods.

3.2 Research Hypothesis

H0: coastal erosion impacts on nature and human

H1: the new process of construction is helpful in reducing coastal erosion

3.3 Research Question

In research question various questions can be raised on the basis of the sustainable deposition in the coastal region.

      How the erosion in the coastal areas have impact in the human and environment both?

      What is the impact of soil erosion and what are the methods for the reduction of soil erosion?

      How the new process of construction aids in reducing coastal erosion?

      What can be effective and implemented causes in coastal region for erosion?

Subsection:

      What is meant by coastal erosion?

      What and how types of erosion are there in the present day till date?

      What is the effective reason for coastal erosion?

      What are the objectives and limitations for the protection of the current situation as well as to mitigate the process of soil erosion?

3.4 Analysis on research Design

Research philosophy

For this research, positivism philosophy has been acknowledged in a precise manner. In the various settings it has been introduced that the data collection and interpretation have to serve the way in the positivist study (Kaplan 2017, p.31). With the positivism philosophy, factual knowledge is achieved through observation and measurement. However, in using this philosophy, the researcher possesses limited collection of data along with interpretation. With this research philosophy, research findings become quantifiable and observable. This philosophy will provide better idea to investigate on the interpreted and accumulated data. This research philosophy will depend on the quantifiable observations just to implement statistical analysis in respect to the research area. This philosophy also suggests knowledge which comes from hypothetical or human knowledge.

Research approach

For this assignment, deductive approach is taken by the researcher as this is concerned with development of a hypothesis that is based on the existing theory. Apart from that, with the deductive approach the researcher can be helpful in designing a proper research strategy for the purpose of testing the hypothesis (Weber 2017, p. 55). Apart from that, with the deductive approach, the researcher can be able to explain the hypotheses means. This simply involves deduction of conclusions from the propositions. This approach has been is needful as abundance of resources can be achieved and short time is required for the completion of the study. Risks can be avoided by using this research approach. Apart from this another reason behind selecting this research approach is, it will provide an expected pattern which will examine against the researcher s observations. This research approach will lie on the fact which elaborates that this approach will provide profound conclusion at the end of the study.

Research design

In this research, explanatory research design is carried out by the researcher. This is conducted for the purpose of determining nature or type of the issues. This research design is useful in the better understanding of any issues in the research topic. However, this is not directed for providing any conclusive evidence. With the use of this research design, it does not provide conclusive and final conclusion; however, it explores significantly the research topic with the varying depth level (Bell, Bryman & Harley 2018, p. 120).

Research method

This research requires only secondary research to meet all the requirements of the research including the research aim, objectives. This research will focus on only secondary research primary research is not required for this study as it is totally technical study Therefore research must obtain relevant data from authentic sources to complete this study accordingly

All of the data and information required for this job can be obtained from a greater source of academic journals and books therefore primary data analysis is not taken for this study.

3.5 Instrumentation

For carrying out this research, the researcher has taken the help of Google scholar and ProQuest as the better instrumentation process. Google scholar has been chosen as wide range of research articles, journals and books can be accessed easily. Even, ProQuest is chosen as this is a better place to choose journals according to place, time scale and peer-review.

 

Research Hypothesis

Research Questions

Utilisation of Instrumentation

H0: coastal erosion impacts on nature and human

 

1.     How the erosion in the coastal areas have impact in the human and environment both?

2.     What is the impact of soil erosion and what are the methods for the reduction of soil erosion?

3.     How the new process of construction aids in reducing coastal erosion?

4.     What can be effective and implemented causes in coastal region for erosion?

 

In order to accumulate data, researcher has performed detailed investigation from several secondary resources such as journals, books, web published sources and articles. Those resources have been found in Google Scholars, ProQuest and these two places keep authentic data along with information.

However, this paper gathers information from several secondary resources to accumulate statistical data and information related to research questions.

H1: the new process of construction is helpful in reducing coastal erosion

1.     What is meant by coastal erosion?

2.     What and how types of erosion are there in the present day till date?

3.     What is the effective reason for coastal erosion?

4.     What are the objectives and limitations for the protection of the current situation as well as to mitigate the process of soil erosion?

In order to establish the concept of coastal erosion, several secondary resources help to obtain and construct necessary solution for appropriate type of coastal erosion. In this case, different websites regarding coastal development contains necessary information approved by various researchers and that data are very much useful to describe impact of coastal erosion in an effective manner.

3.6 Secondary data collection

The researcher has chosen secondary data collection for gaining data for this research. In this secondary data collection, data is collected from the secondary sources such as by using Google Scholar and Proquest due to its vast collection of data (Fox & Alldred 2015, p.400). This two instrumentation tools have been selected as this gives various data ranges. Not only that, institutional library have been useful in collection of secondary data. This research study is considering all the secondary data as the prime information because it depends on secondary research. In the data collection section this study is going to analyse the data on the basis of thematic data analysis.

In this section researcher will create four themes according to the research objective. All of them need to be relevant with the research objectives in case they are hypothetical. Each data and information identified in the secondary research process is going to be analysed in context with the theme and research objective. Starting from the cause of erosion to developing new method to prevent beach erosion is going to be analyzed in the following section. In case of secondary research data findings and analysis each of the data must be collected from the relevant sources and journals to make an authentic data analysis by maintaining relevancy of data.

3.8 Ethical considerations

During this research, ethical considerations such as maintaining data protection act 1998 are ensured. Apart from this, respect to research participants, managing research confidentiality, maintain anonymity of team members in the research is carried out. In addition to this, better communication is maintained with transparency and honesty.

3.9 Methodology limitation

This research has been fruitful entirely in its form. However, certain limitations have been observed in the data accessing as there are some useful resources which cannot be accessed without buying it and lack of authority. Hence, it created bit of issues due to lack of research budget or monetary problem.

3.10 Conclusion

From the above mentioned methodology, it can be concluded that the positivism philology, explanatory research design and deductive approach has been chosen. This has been helpful to the researcher in formulating the research hypothesis and implementing those in research. Secondary collection of data is followed and in instrumentation Google scholar and Proquest have been used. During the research ethical considerations have been maintained. However, certain limitation shave been posed in research due to lack of monetary issues and deficiency in accessing important resources.


 

Chapter 4: Analysis of researched data

4.1 Introduction

Significant development in technology is significantly helping human beings in leading luxurious and comfortable lifestyle. However, negative impacts of technology on environment can also not be denied. Some of those negative impacts can be regarded as considerable rise in global temperature. Most important aspects of manmade technologies and activities leading to significant rise in global temperature can be regarded as the hydrocarbons beings emitted from vehicles, factories and cooling systems. As discussed in OECD Environmental Performance Reviews: Korea 2017, 2017, the hydrocarbon particles usually are very good in absorbing and retaining heat and hence keeping the heat intact in the lower region of atmosphere. Heated air generates low pressure and becomes the reason for storms. Coastal areas usually lack with large green forests and hence remain heated mostly during day time leading to stormy conditions resulting in erosion of sand from shoreline. Moreover, heated atmosphere is significantly leading to melting of glacier and hence significant rise in level of seawater. Stormy conditions near coastal areas usually make the sea current harsh and hence leading to increase in beach erosion.

This assignment focuses on analysis of facts which are leading to beach erosion in coastal areas near shorelines across the world along with discussion on different methods which can ensure reduction in beach erosion. Moreover a detailed discussion is needed to be done on different constructional aspects so that limitations in the research conducted can be found out and recommendations for future can be suggested according to discussion on findings.

4.2 Data

Travels and tourism has become the fastest growing industry nowadays having a significant proportion of tourists interested in travelling towards beach destinations. This implies development of infrastructure facilities near sea beaches in order to accommodate huge amount of tourists. Moreover, luxurious lifestyles of most of the travellers generate need of using artificial methods of cooling which emits huge amount of heat absorbing hydrocarbon particles. Increase in amount of hydrocarbons in atmosphere is supposed to increase heat of the region and hence causing stormy weather conditions responsible for erosion of beach sand (Dragulanescu, 2014). It is necessary to prevent such erosions using sustainable constructions along with monitoring and controlling amount hydrocarbon emission so that area of beaches does not get so less that it poses a significant threat not only on environment however also on business of travels and tourism industry.

In order to achieve sustainability in construction of different kinds of infrastructures and different methods implemented, a detailed discussion in needed to be done each aspects of collected data during research. In the previous sections it has been discussed that, secondary method of research had been used in order to gather knowledge on different aspects of infrastructure development so that erosion of beach sand can be reduced significantly. Primary method of data collection has not been considered as it was supposed to take longer time while being unable to provide accurate and authenticate responses to research questions (Felter and Morris, 2016). On the other hand, discussion of data acquired from authenticated online resources documented by renowned environmentalists and researchers are supposed to gather nearly appropriate data. As per the discussions already cited in previous sections, different methodologies had been used in order to gather significant information which upon analysis is supposed to justify sustainability of the beach preserving construction processes. As per the data gathered through authenticate online resources, development of artificial infrastructures can be identified to be implemented across the world in order to ensure reduction of beach erosion. Moreover, need of natural resource enhancement can also be identified to be an efficient process for maintaining strength of beaches to keep erosion of sand reduced and hence helping in attracting more tourists in upcoming years (Nguyen et al. 2018). Different themes in context to development of construction and maintenance facilities near beach areas are needed to be discussed in detail so that the resear5ch questions can be satisfied along with being able to justify sustainability of construction processes in terms of reducing beach erosion.

4.3 Findings

Different aspects of construction in order to ensure sustainability of different methods for reduction of beach erosions can be discussed into two categories; construction of civil infrastructures and development of natural resources which can help in preventing erosion of sand from shoreline to the depth of seas and oceans.

4.3.1 Theme 1: Development of civil infrastructures and use of other artificial methods

In order to provide an immediate solution to beach erosion, civil infrastructures and many artificial methods can be used. Some of the widely used artificial methods for beach reduction are as follows.

      Shore Hardening

It is the most widely used beach erosion prevention technique all over the world. Usually the force with which waves strike the seashore decides the extent of beach erosion. This means, more is the force of waves, more is the extent of erosion. Shore hardening techniques such as construction of fixed structures like bulkhead, revetment and seawall basically withstand the force of waves leading to significant reduction in the impact on sand on the beach and hence resulting in less erosion.

Bulkheads usually are vertically constructed barriers which prevent waves with high force to go beyond and erode sand and soil. Even if this method helps in preventing beach erosion, it is not done completely as the sand towards the face of bulkhead gets eroded and dragged into the sea (Sneath, 2015). In order to minimize the erosion, bulkheads are usually constructed near shoreline and stones or riprap are placed at toe of the bulkhead so that some of the energy carried by wave can be absorbed. The bulkheads can be made of wood, vinyl concrete or steel.

Figure 4.3.1 (a): Side view of Bulkhead formation

(Source: Shahid and Colwell, 2018)

Seawalls usually are constructed in order to withstand wave energy more than that is absorbed by bulkheads. Cast-in-place concrete or timbers are used mostly in order to construct sea walls of vertical, curved or stepped structure.

Figure 4.3.1 (b): Seawall

(Source: Shahid and Colwell, 2018)

Revetments usually behave as armour of the slope faced seawalls. One or more layers of graded riprap are used in order to construct revetments. However, alternative materials for construction of revetments can be timber, precast concrete mats or gabions etc.

Even if these are good and widely used methods of reducing beach erosion, less and improper planning and monitoring is supposed to get erosions continued (Dirks, 2017). Hence, proper planning is needed to be done in context to calculation of energy carried by waves and the height it covers on regular basis near the site of construction.

Figure 4.3.1 (c): Stone revetment

(Source: Dirks, 2017)

      Breakwaters

This method of beach erosion prevention employs a single structure or series of units placed near the shore in order to break the energy of wave so that it cannot hit the sand with more force and drag it into the sea. Rocks are usually used in order to break the energy however tires, formed concrete or broken concrete may also be used (Scyphers, Powers and Heck, 2015). Use of any of the aforementioned materials for making breakwater depends upon availability near the region of breakwater construction.

Figure 4.3.1 (d): Breakwaters

(Source: Scyphers, Powers and Heck, 2015)

      Sills

Sills are semi continuous structures and help in reducing wave energy in each stage. Continuous energy reduction of sea waves help sand in beach getting hit with a very low energy wave and hence it becomes impossible for the wave to drag a significant amount of sand with it. Even if sills fail in reducing wave energy because of having very high energy content, sands being dragged in returning phase of the wave get stuck in the semi continuous structure (Kroon et al. 2017). Moreover, the next phase of wave hitting the shores repels the stuck sand towards the sore. Sill structures usually get constructed using stone, treated wood or other materials. As building skills needs encroachment bayward or riverward beyond Mean High Water, acquiring permits for installation becomes complicated.

Figure 4.3.1 (e): Sills

(Source: Kroon et al. 2017)

      Beach nourishment

It is referred to the concept of adding additional sand on a shoreline in order to enhance beach area. It is basically the concept of filling an area where beach erosion has already replenished most of the sands. In order to retain the amount of nourished sand, other beach erosion protection methods are needed to be adopted. As it is impossible to recover the eroded beach sand, this method is usually used to restore the beach strength (Gopalakrishnan et al. 2017). Being artificial ways of sand storage, nourished beaches can be identified to be highly susceptible towards re-erosion and hence proper care is needed to be taken in order to construct an efficient shoreline hardening structure so that the sand cannot be retracted towards the sea.

Figure 4.3.1 (f): Beach Nourishment

(Source: Gopalakrishnan et al. 2017)

      Groin construction

Groins are barriers constructed perpendicular to the shoreline using concrete, steel, rock or timber. These also behave as wave energy breakers as the waves are supposed to hit the constructed groin first before reaching the shoreline. Moreover, sand getting retracted from shoreline is supposed to be trapped between the shoreline and groin and hence helping in prevention of beach erosion (Anfuso et al. 2016). Deposited soil and sand on the constructed groin sometimes help in growing of trees and eventually the groin formed looks like small and beautiful islands.

Figure 4.3.1 (g): Groin Construction

(Source: Anfuso et al. 2016)

      Composite system development

Development of a composite beach erosion prevention system refers to use of more than one methods discussed above in order to break the wave energy and prevent the beach sand from dragged into the sea by high energy waves. Decision on use of any combination of aforementioned strategies for prevention of beach erosion is taken considering the usual height and energy of wave. Apart from using a combination of artificial beach erosion prevention methods only, the composite system also considers use of natural means of beach erosion prevention along with artificial means.


 

4.3.2 Theme 2: Use of natural resources

While construction of civil infrastructures near shorelines can be regarded as immediate solutions, use of natural resources can be identified to be nature friendly and in some cases long lasting solutions. Some of the efficient modes of using natural resources for maintaining sustainability of the method in reducing beach erosion are as follows.

      Vegetation

This concept requires planting of grasses in existing tidal and supratidal substrate and is limited to use for sites with limited fetch. At sites with larger fetch, sand filling is needed for creation of March Fringe. It is necessary so that better substrate can be generated for planting terrace (De Salvo et al. 2018). Apart from using grass for vegetation, roots of plants, trees or bushes can also be used in combination in order to bind soil and sand lying near shoreline so that it becomes difficult for sea waves to drag the soil and sand near shoreline. In addition, geotextiles or geomats constructed of natural fibres and straw can also be used near shoreline in order to trap the soil from getting eroded because of retraction of high energy of waves.

Figure 4.3.2 (a): Coastal vegetation

(Source: De Salvo et al. 2018)

      Submerged vegetation

Submerged vegetation or use of sea grasses helps in stabilising the sediment and helps in attenuation of wave during low tides. Generation of sea grass is generally a natural phenomenon and hence varies with change in season. Usually sea grasses become less dense during winter season in temperate areas and hence the region becomes free of any natural obstruction for the tides. Any possible stormy conditions in such times leads to retention of high energy in the waves which upon absence of sea grasses retains the entire energy and dashes the sea shore with the same high energy. In case, other beach protection methods are unavailable in such conditions, very high extent of beach erosion happens (Santana and Barroso, 2014). In order to maintain natural resistances in form of sea grasses, it is necessary for concerned authorities to restore the habitat after replenishment of sea grasses in the winter. Efficient planting techniques meeting wave exposure requirements such as ensuring availability of light with at least 10% of surface irradiance is taken utmost care of so that sea grasses can survive for long time even in the winter (Donner and Webber, 2014). However, inefficiency of being able to develop such conditions for longevity of sea grasses has led this concept to be a less interesting subject of discussion. On the other hand, regular researches on this subject are supposed to result development of sea grass restoration technologies in near future.

Figure 4.3.2 (b): Coastal submerged vegetation

(Source: Santana and Barroso, 2014)

      Vegetated dune formation

This is actually a composite system development which employs two methods for prevention of beach erosion. One among the two is beach nourishment while the other is plantation of appropriate species of dune grasses in the nourished sand. Nourishment restores sand strength of beach while planting dune grasses in the sand ensures ability of the sand to withstand energy of sea wave which would have dragged the sand into sea in case it had not been reinforced with root bodings of dune grasses (Bennett, Kadfak and Dearden, 2016). In order to maintain strength of the composite it is at first needed for the grass to make bondage with the sand properly and hence temporary means of wave energy reduction is needed to employed so that high energy of wave do not drag sand along with dune grasses into the sea.

AG-591 Figure 4.jpg

Figure 4.3.2 (c): Vegetated dune formation

(Source: Bennett, Kadfak and Dearden, 2016)

      Marsh Creation

Marsh creation allows an individual or a group of individuals concerned with beach erosion prevention to plant appropriate species of grass, sedges or plants near the shoreline which can remain alive in salty water. Roots of these greeneries makes strong bond with the sand in the beach so that even high energy of waves cannot break the bond between grasses and the sand. Moreover, the grasses in the beach help in reduction of wave energy upon hitting them because of which high energy waves become unable to drag sand from shoreline into the sea.

      Forestation

Apart from aforementioned erosion prevention strategies there is also another aspect which might not have direct impact on reducing energy of wave or ensuring strength of sand so that wave cannot drag a significant amount of sand into the sea however possess significant indirect impact. It has already been discussed that stormy conditions in the sea generally generated because of low pressure which can be identified to be a by-product of global warming. Moreover, it is also known that, availability of greenery in any region is supposed to make the atmosphere cool and hence reducing the chances of irregular low pressure generation (Keijsers et al. 2015). Forestation near seashores is supposed to maintain temperature of the region and hence reducing chances of irregular storms in sea. This means reduction in chances of high energy carrying leaving dashing the seashore and hence resulting in reduction of beach erosion.

Related image

Figure 4.3.2 (d): Coastal forestation

(Source: Keijsers et al. 2015)

4.4 Discussion

In context to both the themes discussed in above sections it can be identified that, prevention of beach erosion using artificial means is supposed to provide immediate solutions while natural means are supposed to provide long lasting and environment friendly solutions. On the other hand, the most efficient method for prevention of beach erosion can be found out to be a sound blend of natural and artificial means (Kousky, 2014). This is because of the fact that, artificial means are supposed to immediate solution towards behaving an obstruction responsible for reduction of wave energy and for not letting sand dragged into the sea. On the other hand, natural methods such as vegetation, submerged vegetation and vegetate dune formation are supposed to need long time for their growth and creating bond with sand and soil near the beach so that not only the wave energy gets reduced, however it also becomes unable to drag the sand (Anfuso et al. 2016). None of the methods discussed so far can be identified to be having the ability of attending the prime cause so that high wave energy on irregular basis can be reduced naturally. The last concept discussed which is forestation infers that higher amount of energy in waves irregularly and increase in sea water can be because of global warming which can only be mitigated by generating greeneries all over. This is because of the fact that, more green plants in a place especially in touristy spots are supposed to help in maintenance of temperature by maintaining purity of air. A cool atmosphere is supposed to reduce the chances of irregular low pressure in sea and hence reduction in chances of sea storms.

4.5 Conclusion

This chapter focuses on collection of many important data on acquiring significant knowledge on different methods which can ensure prevention of beach erosion either alone or in a combination. Data has been collected on different types of construction methods and concepts which can ensure sustainability of construction process. Furthermore, all the acquired data has been analysed in context to different conditions in beaches. Moreover, the research findings and discussions done help in meeting the research questions and sub questions developed previously.

Three of the most important aspects as per the discussions carried out had been found to be use of civil construction methods, planting appropriate sea grasses following a proper pattern in order to ensure bonding between sand and grass and natural cooling of the atmosphere which in natural means is supposed to reduce chances of increase in sea level and hike in wave energy irregularly. Moreover, discussion on identified themes also suggests that, a combination of different necessary aspects is supposed to be beneficial in order to maintain sustainability of composite system in reducing beach erosion. However, deforestation has been identified to be given utmost priority irrespective of general weather and climatic conditions of target area so that it can manage the basic cause behind generation of sea storms irregularly which is global warming.


 

Chapter 5: Findings and Conclusion

5.1 Introduction

With significant growth in world tourism, risks on natural resources have also been increased significantly. Race in terms of providing better facilities has increased use of hydrocarbon emitting facilities up to such an extent that global warming has risen as the most important challenge before living beings. This chapter focuses on findings of research on sustainable construction strategies meant for significant reduction of beach erosion in order to maintain available beach area intact all around the world. In addition, discussion in this chapter has also been done on contribution of such technologies on restoration of environment in a broader sense. Furthermore, limitations of the research conducted have also been discussed along with identification of future contexts of research.

5.2 Motivation and significance of the thesis

Innovations in the field of technology have helped human beings to lead a luxurious and comfortable lifestyle. Moreover, significant inventions has led to reduction of physical stress on human beings and increment in work precision up to such an extent that almost everyone nowadays is feeling need of using different kinds of machines. However, different forms of energy are needed to run the machines. Most of the machineries used starting from the age of technological evolution has significantly needed use of hydrocarbon emitting power sources. Hydrocarbon particles are good absorbers of heat and heavy because of which atmosphere of earth is being heated day by day. On the other hand, industrial revolution in the world has generated an intense competition among industrials all over the world (Noblet and Brisson, 2017). In order to satisfy increasing ambitions of industrialists, greeneries all around the world is being reduced day by day and hence putting the natural shield on global warming down.

This thesis is significant as it is focused on identification of sustainable construction strategies so that balance of nature can be restored. Moreover, adequate discussion on sustainability of nature involved strategies are supposed to help in reduction of wave energy because of increased water content and increase in repeated low pressure situations around seas and oceans (Jayanthi et al. 2018). In addition, successful development of sustainable civil construction strategies are supposed to help in providing immediate solutions to adverse impacts of high energy waves and tides on beach erosion and hence reduction in tourism and nature imbalance.

5.3 Findings and discussion of the research question

Research conducted using secondary methods of data collection has helped in identifying various causes of beach erosion. Most important cause of beach erosion has been identified to be significant rise in hydrocarbon emissions because of human activities in terms of using vehicles and artificial cooling techniques. It has been found out from the research that; beach areas usually get huge tourism opportunities because of which tour operators adopt every possible strategy such as use of vehicles for transportation leading to increase in amount of carbon monoxide and particulate matters in atmosphere. In addition, hotel owners adopt artificial cooling technologies in terms of using refrigerators and air conditioning of rooms because of which amount of Chlorofluorocarbon (CFC) increases in the atmosphere. All these identified hydrocarbon particles are heavy and heat absorbing in nature because of which local atmosphere becomes so much heated that low pressure situations gets generated repeatedly and irregularly leading to increase in wave energy (Jerome and Stakhiv, 2015). Moreover, increase in such particles in atmosphere all over the world is making the situation of global warming worse every day leading to melting of glacier resulting in increase in water level in seas and oceans. In accordance to research outcomes and as discussed in Forestry for a low-carbon future: Integrating forests and wood products in climate change strategies. (2016), increase in sea water and wave energy along with considerable deforestation leading to beach erosion can be prevented only if multidimensional work is done. Analysis on outcomes of secondary research has helped in acknowledging to the fact that, civil constructions alone cannot result in significant reduction of beach erosion despite of being an immediate solution. Rather, basic causes of beach erosion such as increased sea water content and wave energy are needed to be managed using natural means so that a sustainable and long lasting solution can be implemented. Moreover, analysis of findings of conducted research helps in answering developed research questions up to a significant extent. However, it would have been better in case primary research would have been conducted in order to gather more realistic knowledge on the context of research.

5.4 The contributions of this study

This research helps in finding out basic causes of beach erosion along with adequate justifications. Moreover, this research study also has helped in finding out sustainability of methods being used currently in mitigation of the situation which is being seen in almost all beaches around the world because of which beach area is decreasing significantly. On the other hand, reduction in beach area can be seen compensated naturally by reducing normal area which is a bigger concern (Alam and Mohammad, 2018). This is because of the fact that, increased sea water having high wave energy content is reaching out to normal areas having populations and ploughable fields and hence making those areas difficult to live and produce food crops. Findings of the conducted research is supposed to be efficient in acknowledgement of sustainable construction methods in reducing beach erosion and finding out issues in the currently used methods so that suggestions can be devised for restoring balance of nature.

5.5 Future research and limitations of the study

Even if the secondary method of research could help in finding out many important aspects associated with the topic of research in order to meet research objectives and answer developed research question, utmost authenticity of data gathered cannot be justified in context to recent conditions. This Is because of the fact that, secondary research helps in analysing information gathered on past phenomena. As beach erosion, global warming and environmental deterioration are ongoing processes and very significant challenged to existence of life on earth, primary research in terms of interview of environmentalists, people living near beaches and business persons working is hospitality, travels and tourism industry could have yielded better and realistic results. Hence, a primary data collection method is needed to be employed efficiently and necessarily in case a research is supposed to be carried out on this topic in future so that present conditions of constructions for prevention of beach erosion can be analysed.

5.6 Conclusion

This section provides overview on basic motivation behind execution of the research project. Moreover, contribution of research findings towards development of efficient strategies for environmental restoration has also been discussed along with limitations of the research carried out. Furthermore, need and context of future research have also been suggested so that better outcomes can be gained. Following suggestions on future research is supposed to help in finding out more efficient sustainable construction strategies both in terms of using civil constructions and use of natural resources so that beach erosion can be reduced along with resulting in reduction of its negative impacts on environmental stability and life of living beings.

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