scholarly journals Assessment of shoreline positional uncertainty using remote sensing and GIS techniques: A case study from the east coast of India

2021 ◽  
Vol 71 (3) ◽  
pp. 249-263
Author(s):  
Kongeswaran Thangaraj ◽  
Sivakumar Karthikeyan
Keyword(s):  
Linear Regression ◽  
Coastal Zone ◽  
East Coast ◽  
Coastal Zone Management ◽  
Storm Surges ◽  
Shoreline Change ◽  
Coastal Protection ◽  
East Coast Of India ◽  
Zone Management ◽  
2004 Tsunami

The focus of this research was to assess the shoreline changes by comparing the satellite data from 1980 to 2020. The study area falls in the region between Kodiakarai and Nagapattinam of the east coast of India, which has frequently been distressed by storm surges and cyclones in the Bay of Bengal. The Digital Shoreline Analysis System (DSAS) detects and measures the erosional and accretional shoreline positions through the statistics of the Shoreline Change Envelope, Net Shoreline Movement, End Point Rate, Linear Regression Rate, and Weighted Linear Regression. The results show that the shoreline from Kodiakkarai to Nagapattinam suffered severe erosion of 17.7% in total with an average annual erosion rate of 3.4 m/year from 1980 to 2020 and the rate of erosion ranged between 0.1 m/year to 19.8 m/year. About 90.5% of the total shoreline was faced high erosion during the period between 2000 and 2010. The maximum erosion was about 1061 m from 2000 to 2010, the maximum accretion was found to be 1002 m in transects at Kodiakkarai during 2010 to 2020. After the effect of 2004 tsunami, the corresponding changes in littoral currents caused the drastic erosion and accretion in this shoreline. The DSAS prediction model shows that 19.3% of the current shoreline will erode in 2030. The maximum predicted erosion is 406 m at Kodiakkarai and the maximum predicted accretion is 148 m at Nagapattinam region. The coastal zone from Kodiakkarai to Nagapattinam needs special attention to prevent the erosion and it is recommended to build suitable coastal protection structures along the coast for sustainable development and to execute the coastal zone management for this region.

scholarly journals Exploring the Ever-Changing Seashore Using Geoinformatics Technology

Earth ◽  
2021 ◽  
Vol 2 (3) ◽  
pp. 544-555
Author(s):  
Ibra Lebbe Mohamed Zahir ◽  
Buddhika Madurapperuma ◽  
Atham Lebbe Iyoob ◽  
Kafoor Nijamir
Keyword(s):  
Coastal Zone ◽  
Satellite Images ◽  
Coastal Zone Management ◽  
Ground Truth ◽  
Shoreline Change ◽  
Modern Technology ◽  
Google Earth ◽  
Coastal Protection ◽  
Threshold Method ◽  
Zone Management

Detecting coastal morphodynamics is a crucial task for monitoring shoreline changes and coastal zone management. However, modern technology viz., Geoinformatics paves the way for long-term monitoring and observation with precise output. Therefore, this study aimed to produce explicit shoreline change maps and analyze the historical changes of the coastline at the east coast of the Ampara District in Sri Lanka. The histogram threshold method is used to extract data from satellite images. The time-series satellite images, acquired from 1987 to 2017, toposheet, and Google Earth historical images were compared having adjusted with the ground-truth to find the seashore changes in the study area. The histogram threshold method is used on band 5 (mid-infrared) for separating land from water pixels which means that the water pixel values were classified to one (1) and land pixel values to zero (0). The extracted shoreline vectors were associated with each other to determine the dynamics of changing shoreline of the study area. The Digital Shoreline Analysis System (DSAS) was used to find shoreline movements for each period of time. As a result, it was observed by the cross-section analysis within 100 m shoreline—seaward range along the study area—in which severe erosion has occurred northward of the Oluvil Harbor and anomalous accretion southward of the harbor because of the breakwaters constructed in the port entrance which hinder the long shore sediment transport along the study area. This situation has resulted in many ramifications to the coastal zone of the study area in socio-economic and environmental aspects in which the coastal protection mechanisms have not been well implemented to curb such issues.

scholarly journals MONITORING OF ENVIRONMENTAL IMPACTS IN WORLDWIDE BEACH NOURISHMENT PRACTICE

2018 ◽  
pp. 78
Author(s):  
Franziska Staudt ◽  
Bjoern Deutschmann ◽  
Caroline Ganal ◽  
Rik Gijsman ◽  
H. Christian Hass ◽  
...  
Keyword(s):  
Coastal Zone ◽  
Coastal Zone Management ◽  
Ecosystem Approach ◽  
Coastal Protection ◽  
Sea Levels ◽  
Zone Management ◽  
Maritime Traffic ◽  
Rising Sea Levels ◽  
The Eu

The growing pressure on the coastal ecosystem, e.g. through fisheries, tourism or maritime traffic demands the careful balancing of activities and developments in the coastal zone. Strategies and planning tools like Integrated Coastal Zone Management (UNEP/MAP/PAP, 2008) or the ecosystem approach (which is planned to be implemented in the EU through the Marine Strategy Framework Directive, European Commission, 2008) aim at a holistic, environmentally friendly and sustainable development of the world’s coastlines. Especially in view of rising sea levels, coastal protection becomes crucial for many densely populated coastlines. For the past few decades beach nourishments have been carried out in many coastal regions as “environmentally friendly” alternative to hard coastal protection structures, such as groins, revetments or breakwaters (Hamm et al, 2002). However, the extraction, transport and deposition of sediment can have (long-term) impacts on the environment, which are often not completely understood. Subsequently, these impacts cannot be fully taken into account in national and local nourishment practice, leading to an insufficient implementation of the ecosystem approach.

scholarly journals Sustainable Coastal Zone Management: Need for a Holistic Approach for Bangladesh

2020 ◽  
Vol 10 (2) ◽  
pp. 112
Author(s):  
Md Ataur Rahman Khan
Keyword(s):  
Coastal Zone ◽  
Coastal Management ◽  
Coastal Zone Management ◽  
Climate Change Impacts ◽  
Storm Surges ◽  
Holistic Approach ◽  
Management Scenarios ◽  
Zone Management ◽  
Management Approaches ◽  
The Uk

Coastal Zone is the most vulnerable area which is often attacked by cyclones, storm surges, floods, erosion and affected by climate change impacts like prolonged drought, salinity intrusion & greater temperature extremes. These realities are true both for the developed nations and a developing country like Bangladesh. This review study aims to explore the coastal management approaches in the UK & EU and the prevailing coastal management scenarios of Bangladesh. Based on the existing coastal management situations of Bangladesh, this study suggests that Bangladesh needs a holistic coastal management mechanism that should be supported by legislation, run by administrative and institutional frameworks, staffed by multidisciplinary experienced professionals under a Coastal Zone Management Authority (CZMA) for sustainable coastal zone management.

Disintegrated coastal zone management (DICZM): an example from Auckland, New Zealand

2020 ◽  
Author(s):  
Martin Brook ◽  
Alex Palma ◽  
Rosemary Garill ◽  
Nick Richards ◽  
Jon Tunnicliffe
Keyword(s):  
New Zealand ◽  
Coastal Zone ◽  
Coastal Zone Management ◽  
Land Development ◽  
High Energy ◽  
Wave Climate ◽  
Engineering Properties ◽  
Coastal Protection ◽  
Zone Management ◽  
Auckland Region

<p>Typically, integrated coastal zone management (ICZM) uses the informed participation and cooperation of all stakeholders to assess the societal goals in a given coastal area. ICZM seeks, over the long term, to balance environmental, economic, social, cultural and recreational objectives, all within the limits set by natural dynamics. We outline coastal instability in the Auckland region of New Zealand, where the effects of natural coastal dynamics appear to have been underplayed, or even overlooked, during the residential land development process. Auckland is New Zealand’s largest city, with the Auckland region encompassing c. 3,300 km of coastline, with a highly variable wave climate and coastal geomorphology. The sparsely inhabited high energy west coast records significant wave heights of 2-3 m for much of the year. In contrast, the eastern bay coastlines are lee coasts, protected by offshore islands in the Hauraki Gulf and the Coromandel Peninsula. Nevertheless, significant coastal cliff instability does occur along these eastern coasts, which are heavily populated, with houses often constructed within 10 m of the cliff edge. Coastal instability in the Beachlands area in particular, is part-conditioned by engineering properties of the cliff materials, which include soft, Pleistocene sediments. In particular, shear surfaces develop along clay-rich tephra layers, which are of low-permeability, leading to increased porewater pressure, and cliff failure.  Despite the clear failure mechanisms, coastal protection works and routing of domestic stormwater over the cliffs has led to further coastal instability.</p>

Integrated Approach to Coastal Zone Management in Puerto Galera, Oriental Mindoro, Philippines

1984 ◽  
Vol 16 (3-4) ◽  
pp. 433-440
Author(s):  
O C A Iriberri
Keyword(s):  
Coastal Zone ◽  
Coastal Zone Management ◽  
Integrated Approach ◽  
Physical Parameters ◽  
Ecological Studies ◽  
Continuous Increase ◽  
Zone Management ◽  
Single Fragment ◽  
Human Attitude ◽  
And Migration

Coastal zone management requires an understanding of the complex milieu of interactions and activities taking place in an environmental system. Man is beginning to recognize that the old method of dealing with individual issues and problems as single fragment of a whole ecosystem is not enough. This paper tries to deal with the integrated manner in carrying out effectively the management of the coastal zone in Puerto Galera, Oriental Mindoro by the Man and the Biosphere Interagency Committee on Ecological Studies. To attain the objective of the project, the different agencies monitor, identify, observe, investigate various natural and physical parameters contributing to the ecological balance and study the rational use of the resources along the coastal zone. Result of the study showed that although such factors as land use practices of shifting cultivation (kaingin), human attitude towards forest and its resources, and continuous increase in population and migration of people were observed, such pressure on lands has not greatly affected the Puerto Galera coastal zone resources.

Unmanned Aerial Vehicle (UAV) applications in coastal zone management—a review

2021 ◽  
Vol 193 (3) ◽  
Author(s):  
Richard Adade ◽  
Abiodun Musa Aibinu ◽  
Bernard Ekumah ◽  
Jerry Asaana
Keyword(s):  
Unmanned Aerial Vehicle ◽  
Coastal Zone ◽  
Coastal Zone Management ◽  
Zone Management ◽  
Aerial Vehicle
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