scholarly journals Protecting Coastlines from Flooding in a Changing Climate: A Preliminary Experimental Study to Investigate a Sustainable Approach

Water ◽  
2020 ◽  
Vol 12 (9) ◽  
pp. 2471
Author(s):  
Matteo Rubinato ◽  
Jacob Heyworth ◽  
James Hart

Rising sea levels are causing more frequent flooding events in coastal areas and generate many issues for coastal communities such as loss of property or damages to infrastructures. To address this issue, this paper reviews measures currently in place and identifies possible control measures that can be implemented to aid preservation of coastlines in the future. Breakwaters present a unique opportunity to proactively address the impact of coastal flooding. However, there is currently a lack of research into combined hard and soft engineering techniques. To address the global need for developing sustainable solutions, three specific breakwater configurations were designed and experimentally compared in the hydraulic laboratory at Coventry University to assess their performance in reducing overtopping and the impact of waves, quantifying the effectiveness of each. The investigation confirmed that stepped configurations work effectively in high amplitudes waves, especially with the presence of a slope angle to aid wave reflection. These results provide a very valuable preliminary investigation into novel sustainable solutions incorporating both artificial and natural based strategies that could be considered by local and national authorities for the planning of future mitigation strategies to defend coastal areas from flooding and erosion.

2020 ◽  
Author(s):  
Per Danielsson ◽  
Dominika Nordh ◽  
Anette Björlin

<p><strong>Abstract</strong></p><p>The County Administrative Boards in Skåne and Halland, together with the Swedish Geotechnical Institute (SGI), and Swedish Geological Survey (SGU), have taken the initiative to start a Regional Coastal Cooperation. Both counties’ municipalities and individuals are currently facing problems managing rising sea levels, erosion and flooding.</p><p>Regional cooperation is important for Skåne and Halland as they are the two counties in southern Sweden that are most likely to be exposed to the combined effects of rising sea levels, flooding and erosion. Strategic and coordinated efforts at local level are needed to deal with these challenges in coastal areas, where guidance and support are also provided from regional and national levels. Today's governance system where the responsibility for dealing with these challenges falls on municipalities and individual home owners, presents difficulties in solving complex issues. Various actors feel that they are affected in a way that is not fair. Implementing appropriate measures requires extensive coordination, collaboration, a clear division of responsibilities and financial resources. Regional Coastal Cooperation aims, among other things, to inform national decision-makers in close dialogue with the coastal municipalities in Skåne and Halland that there is a need to strengthen the state's responsibility for these issues.</p><p>Regional Coastal Cooperation also to highlights the need to develop knowledge and planning in order to deal with the difficult issues associated with rising sea level which may affect the development, infrastructure and other values ​​on the coast. Today, there is no comprehensive information on how coastal processes affect different coastal sections in Skåne and Halland. Knowledge about different types of measures and how well they work also needs to be increased. Increased knowledge and consensus are necessary to achieve measures that involve sustainable development in accordance with Agenda 2030 and the global goals.</p><p>The overall goal of Regional Coastal Cooperation is to find concrete solutions to address the challenges posed by rising sea levels, erosion and flooding in coastal areas in Skåne and Halland in ways that are environmentally, economically and socially sustainable.</p><p>In this presentation, we discuss the challenges and potentials of how five identified project groups within Regional Coastal Cooperation project work to implement solutions in coastal areas. Thus, we present how coastal municipalities and the property owners concerned gain knowledge of coastal processes, potential risks and possible measures. We evaluate how coastal municipalities develop and implement strategies for planning and managing the coast that ensure long-term sustainable solutions; manage erosion and flood on the basis of good knowledge, long-term visibility, flexibility, transparency and a holistic perspective. And we highlight how Regional Coastal Cooperation works to ensure that there is a sustainable and fair distribution of responsibilities and financing model for the undertaken measures. Finally, we assess the need for continued and strengthened cooperation in these coastal regions.</p>


2021 ◽  
Vol 317 ◽  
pp. 04012
Author(s):  
Kirana Anindita Parama Putri ◽  
Hayati Sari Hasibuan ◽  
Rudy Parluhutan Tambunan

The phenomenon of climate change causes cities in coastal areas to be threatened by rising sea levels. Semarang is one of the coastal cities in Indonesia which is threatened by sea level rise. One of the consequences is tidal flooding in coastal areas of Semarang. Semarang as an old city has a cultural heritage area with historic buildings. The purpose of this paper is to analyze the current condition of the Semarang Old City National Cultural Heritage Area and the impact experienced by the tidal flood. The method used in this research is to conduct a literature study and field observations which are analyzed by spatial analysis of buildings in historical areas and descriptive analysis. This study shows that tidal flooding is a threat to cultural heritage buildings. The condition of the land in the city of Semarang, which is decreasing due to land subsidence and rising sea levels, has made the potential for damage to buildings in the old city area even greater.


Author(s):  
Sergei Soldatenko ◽  
Sergei Soldatenko ◽  
Genrikh Alekseev ◽  
Genrikh Alekseev ◽  
Alexander Danilov ◽  
...  

Every aspect of human operations faces a wide range of risks, some of which can cause serious consequences. By the start of 21st century, mankind has recognized a new class of risks posed by climate change. It is obvious, that the global climate is changing, and will continue to change, in ways that affect the planning and day to day operations of businesses, government agencies and other organizations and institutions. The manifestations of climate change include but not limited to rising sea levels, increasing temperature, flooding, melting polar sea ice, adverse weather events (e.g. heatwaves, drought, and storms) and a rise in related problems (e.g. health and environmental). Assessing and managing climate risks represent one of the most challenging issues of today and for the future. The purpose of the risk modeling system discussed in this paper is to provide a framework and methodology to quantify risks caused by climate change, to facilitate estimates of the impact of climate change on various spheres of human activities and to compare eventual adaptation and risk mitigation strategies. The system integrates both physical climate system and economic models together with knowledge-based subsystem, which can help support proactive risk management. System structure and its main components are considered. Special attention is paid to climate risk assessment, management and hedging in the Arctic coastal areas.


Author(s):  
Akira Hirano

AbstractImportant aspects for understanding the effects of climate change on tropical cyclones (TCs) are the frequency of TCs and their tracking patterns. Coastal areas are increasingly threatened by rising sea levels and associated storm surges brought on by TCs. Rice production in Myanmar relies strongly on low-lying coastal areas. This study aims to provide insights into the effects of global warming on TCs and the implications for sustainable development in vulnerable coastal areas in Myanmar. Using TC records from the International Best Track Archive for Climate Stewardship dataset during the 30-year period from 1983 to 2012, a hot spot analysis based on Getis-Ord (Gi*) statistics was conducted to identify the spatiotemporal patterns of TC tracks along the coast of Myanmar. The results revealed notable changes in some areas along the central to southern coasts during the study period. These included a considerable increase in TC tracks (p value < 0.01) near the Ayeyarwady Delta coast, otherwise known as “the rice bowl” of the nation. This finding aligns with trends in published studies and reinforced the observed trends with spatial statistics. With the intensification of TCs due to global warming, such a significant increase in TC experiences near the major rice-producing coastal region raises concerns about future agricultural sustainability.


2011 ◽  
Vol 2 (3) ◽  
pp. 26-35 ◽  
Author(s):  
Anastasios Danos ◽  
Konstantina Boulouta

This article analyses the profound and rapid climate changes that have taken place worldwide in the past two decades and their effects on modern enterprise. Reducing greenhouse gas emissions and developing strategies to adapt to and counterbalance future impacts of climate change sustainably are among the most pressing needs of the world today. Global temperatures are predicted to continue rising, bringing changes in weather patterns, rising sea levels, and increased frequency and intensity of extreme weather events. Such climatic events can have a major impact on households, businesses, critical infrastructure and vulnerable sections of society, as well as having a major economic impact. Therefore, society must prepare to cope with living in a changing climate. The effects of a changing climate have considerable impacts on modern enterprises. In some parts of the world, these impacts are increasingly becoming evident.


Drones ◽  
2019 ◽  
Vol 3 (3) ◽  
pp. 62 ◽  
Author(s):  
Antoine Mury ◽  
Antoine Collin ◽  
Dorothée James

Coastal areas are among the most endangered places in the world, due to their exposure to both marine and terrestrial hazards. Coastal areas host more than two-thirds of the world’s population, and will become increasingly affected by global changes, in particular, rising sea levels. Monitoring and protecting the coastlines have impelled scientists to develop adequate tools and methods to spatially monitor morpho-sedimentary coastal areas. This paper presents the capabilities of the aerial drone, as an “all-in-one” technology, to drive accurate morpho-sedimentary investigations in 1D, 2D and 2.5D at very high resolution. Our results show that drone-related fine-resolution, high accuracies and point density outperform the state-of-the-science manned airborne passive and active methods for shoreline position tracking, digital elevation model as well as point cloud creation. We further discuss the reduced costs per acquisition campaign, the increased spatial and temporal resolution, and demonstrate the potentialities to carry out diachronic and volumetric analyses, bringing new perspectives for coastal scientists and managers.


2020 ◽  
Vol 12 (20) ◽  
pp. 8559
Author(s):  
Francesca Dal Cin ◽  
Martin Fleischmann ◽  
Ombretta Romice ◽  
João Pedro Costa

The impact of sea-level rise on coastal towns is expected to be a major challenge, with millions of people exposed. The climate-induced risk assessment of coastal areas subject to flooding plays an essential role in planning effective measures for adaptation plans. However, in European legislation, as well as in the regional plans adopted by the member states, there is no clear reference to urban settlement, as this concept is variable and difficult to categorise from the policy perspective. This lack of knowledge makes it complicated to implement efficient adaptation plans. This research examines the presence of the issue in Portugal’s coastal settlements, the European coastal area most vulnerable to rising sea levels, using the case of seashore streets as the most exposed waterfront public urban areas. Using the morphometric classification of the urban fabric, we analyse the relationship between urban typology and legislative macro-areas aimed at providing integrated adaptation plans. The study suggests that there is only a minimal relationship between the proposed classification and the geographical zones currently identified in coastal planning policies. Such incongruence suggests the need for change, as the policy should be able to provide a response plan tailored to the specificities of urban areas.


2020 ◽  
Author(s):  
Lisa Van Well ◽  
Anette Björlin ◽  
Per Danielsson ◽  
Godefroid Godefroid Ndayikengurukiye ◽  
Gunnel Göransson

&lt;p&gt;Sea level rise poses profound challenges within current municipal and regional governance since it requires unusually long planning horizons, is surrounded by great uncertainties, and gives rise to novel ethical challenges. Adaptation to climate change is fundamentally an ethical issue because the aim of any proposed adaptation measure is to protect that which is valued in society. One of the most salient ethical issues discussed in the adaptation literature relates to the distribution of climate related risks, vulnerabilities and benefits across populations and over time. Raising sea-walls is typically associated with high costs and potentially negative ecological impacts as well as substantial equity concerns; managed retreat or realignment often causes problems related to property rights; and migration out of low-lying areas can involve the loss of sense and cultural identity and impact on receiving communities.&lt;/p&gt;&lt;p&gt;How can the soft and ethical dimensions of rising mean sea levels be characterized and how can their consequences be mapped? To help municipalities to understand the values and ethics attached to measures to deal with long-term rising sea levels in southern Sweden, we are developing a methodology of soft or ethical values to complement to GIS-mapping of coastal vulnerability based on coastal characteristics and socio-economic factors.&lt;/p&gt;&lt;p&gt;Rather than determining these values a priori, they are being discerned through workshops with relevant stakeholders and in interviews with citizens residing in and utilizing the coastal areas. The methodology attempts to determine the place-based of values within coastal communities with a focus on &amp;#8220;whose&amp;#8221; values, &amp;#8220;what&amp;#8221; values, and the long-term or short-term nature of values. It builds on an analytical framework developed to acquire information on the behavior, knowledge, perception and feelings of people living, working and enjoying the coastal areas. &amp;#160;In turn this stakeholder-based information is used to co-create &amp;#8220;story maps&amp;#8221; as tools to communicate complicated vulnerability analyses, highlight the ethical dimensions of various adaptation measures, raise awareness and aid decisionmakers in taking uncomfortable decisions to &amp;#8220;wicked&amp;#8221; planning problems around the negative effects of sea level rise, coastal erosion and urban flooding.&lt;/p&gt;&lt;p&gt;This paper presents the methodological development of the task as well as the results the study in four Swedish municipalities. The representation of the &amp;#8220;soft&amp;#8221; and ethical values provides an opportunity to help clarify these values to policymakers and increase resilience to rising sea levels.&lt;/p&gt;


2020 ◽  
Vol 1 (2) ◽  
pp. 44-47
Author(s):  
Heather Alberro

Human is at the heart of the story of climate change in the Anthropocene where, according to Dipesh Chakrabarty (2012), human behaviors have influenced the environment and created a distinct geological epoch. Current climate change issues are largely human induced. This implies that the human species is now part of the natural history of the planet.  In November 2016, Stephen Hawking warned that humanity has 1000 years to leave the earth due to climate change, but in his most recent BBC documentary aired on June 15, 2017 called Expedition New Earth, he suggested humans have just 100 years left before doomsday. In spite of such warnings and writings, Donald Trump withdrew America from the Paris Climate Agreement on June 2017, on the same day, satellite images showed that a huge mass of ice in an area of ​​five thousand square kilometres was breaking away from the Antarctic continent under the impact of rising temperature. It seems that Trump’s act is beyond ecological consideration as he believes the agreement could “cost America as much as 2.7 million lost jobs by 2025”. Projections of climate change, however, have shown horrible scenarios involving a central economic metropolis such as New York losing much of its lands because of rising sea levels. The inhabitants of such areas will have to uproot their communities and cultures to move to less vulnerable lands. Thus, it is important to examine how ecoutopian literature is responding to the conditions of the human being in this epoch. In the following interview, Heather Alberro has answered to some questions on climate change, the conditions of human being in the Anthropocene, and the role of literature and culture in relation to environmental issues.


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