Coastal Erosion Assessment of the Nile Delta Coast using Remote Sensing, GIS, and Modified Coastal Vulnerability Index

The aim of this specific study is to present a new weighted Coastal Vulnerability Index (CVIWF), with an emphasis given to the geotechnical evaluation and shoreline evolution rate measured through high-resolution remote sensing, which seem to be the most interfering variables in CVI calculations. As a pilot area for the application of the new CVIWF, the Gulf of Patras in Western Greece was selected, which is suffering erosion problems due to climate change, the sea level rising and human intervention. The new CVIWF, which was applied in this research, includes the following innovations: (1) the use of geotechnical characterization instead of geological–geomorphological characterization, (2) the use of high-resolution remote sensing data for the detection of shoreline evolution rate and (3) the insertion of a specific weighted geotechnical factor in the CVIWF formula. The results from the application of the unweighted CVI show that percentages of 20.13%, 20.47%, 24.56%, 29.39% and 5.45% of the gulf’s shoreline are under the regime of very low, low, moderate, high and very high vulnerability, respectively. On the other hand, the corresponding results from the application of the weighted CVIWF show a percentage of 14.59%, 25.91%, 20.04, 36.48% and 2.98, respectively.

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Karakteristik Lahan terhadap Kerentanan Pesisir Pantai Kabupaten Rembang, Jawa Tengah

Journal of Marine Research ◽

10.14710/jmr.v8i3.25268 ◽

2019 ◽

Vol 8 (3) ◽

pp. 253-261

Author(s):

Abiyani Choirul Huda ◽

Ibnu Pratikto ◽

Rudhi Pribadi

Keyword(s):

Coastal Erosion ◽

Input Data ◽

Early Stage ◽

Vulnerability Index ◽

Coastal Geomorphology ◽

Coastal Vulnerability ◽

Coastal Vulnerability Index ◽

Spatial Methods ◽

Descriptive Method ◽

Very High

Kerentanan pantai adalah kondisi yang menggambarkan keadaan mudah terkena dari suatu sistem alami serta keadaan sosial pantai. Kerentanan pantai yang diakibatkan erosi merupakan ancaman yang dapat menimbulkan kerugian yang besar bila tidak ditangani dengan tepat. Perlu dilakukan sebuah upaya mitigasi bencana erosi pantai berupa tahap awal dengan penilaian indeks kerentanan pantai. Upaya mitigasi bencana dapat dimulai dengan membuat pemetaan indeks kerentanan pantai yang berdasarkan penilaian lima variabel, yaitu: geomorfologi pantai, tipologi pantai, kemiringan pantai, vegetasi mangrove, dan penggunaan lahan pesisir. Metode yang digunakan dalam penelitian ini adalah metode spasial yang digunakan untuk menyusun peta tingkat kerentanan pantai yang diawali dengan input data ataupun peta berdasarkan pada variable yang ditentukan, dilanjutkan dengan metode kuantitatif yang digunakan untuk menganalisa data yang tersaji dalam bentuk angka dengan menggunakan sistem skoring, dilanjutkan dengan metode deskriptif yang digunakan dalam mendeskripsikan sejumlah variabel yang berkenaan dengan penelitian. Penelitian ini dilakukan pada bula Mei-Agustus 2017, lokasi penelitian berada di kawasan pesisir pantai Kabupaten Rembang pada 6 Kecamatan Pesisir dan 40 desa. Hasil dari penelitian ini berdasarkan penilaian Indeks Kerentanan Pantai di Kabupaten Rembang didapatkan tingkat kerentanan sangat tinggi (400-450) berada di Kecamatan Kaliori, kerentanan tinggi (360-400) berada di Kecamatan Sarang, Kragan, dan Lasem, kerentanan sedang (290-360) berada di Kecamatan Sluke, dan kerentanan rendah (240-290) berada di Kecamatan Rembang. Dari lima variabel, yang sangat berpengaruh terhadap kerentanan bencana erosi pantai adalah tipologi pantai. Coastal vulnerability is a condition which describes the State of a system of easily affected by natural and social circumstances of the beach.Coastal vulnerability arising from erosion is a threat that can cause great harm if not handled appropriately.Need a coastal erosion hazard mitigation efforts in the form of an early stage with an assessment of the vulnerability index beach.Disaster mitigation efforts can be initiated by creating a mapping coastal vulnerability index based on the assessment of the five variables, namely: coastal geomorphology, typology, the slope of the Beach Coast, mangrove vegetation, and land use. The methods used in this research are spatial methods used to draw up a map of the level of vulnerability of beach, begins with the input data or map based on variable is specified, followed by a quantitative method used to analyze the data that is presented in the form of numbers by using the scoring system, followed by a descriptive method used in describing a number of variables related to the research.This research was conducted in May-August 2017, the location of the research lies in the coast of Rembang in 6 sub-districts and 40 villager. The results of this research are based on the assessment of the vulnerability index Beach in Rembang in the level of very high vulnerability (400-450) is located in district kaliori, high vulnerability (360-400) is located in the subdistrict of Sarang, Kragan and Lasem, medium vulnerability (290-360) is located in district of Sluke, and low vulnerability (240-290) located in the subdistrict of Rembang. From the fifth of these variables, a very influential towards the erosion of coastal disaster vulnerability is the beach typology.

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Alarming coastal vulnerability of the deltaic and sandy beaches of North Africa

Scientific Reports ◽

10.1038/s41598-020-77926-x ◽

2021 ◽

Vol 11 (1) ◽

Cited By ~ 1

Author(s):

Abderraouf Hzami ◽

Essam Heggy ◽

Oula Amrouni ◽

Gil Mahé ◽

Mohamed Maanan ◽

...

Keyword(s):

Global Warming ◽

North Africa ◽

Nile Delta ◽

Vulnerability Index ◽

Sandy Beaches ◽

Source Analysis ◽

Coastal Vulnerability ◽

Coastal Vulnerability Index ◽

Gulf Of Tunis ◽

Anthropogenic Drivers

AbstractThe arid coasts of North Africa, extending over 4633 km from the Gulf of Tunis to the Nile Delta, are undergoing pronounced shoreline retreats and coastal floodings that are reported as a consequence of the ongoing sea level rise resulting from global warming. Of particular interest are the abnormal shoreline dynamics for deltaic and sandy beaches, which are severely impacted by abrupt decadal variabilities in both climatic and anthropogenic drivers resulting in their increased vulnerability to disturbances from coastal hazards. Unfortunately, the evolution, distribution and impacts of these drivers remain largely unquantified, let alone understood, for these extensive arid coasts that harbor the major portion of North Africa’s population as well as unique and fragile marine ecosystems. To address this deficiency, we use GIS-based multi-criteria approaches combined with analytic hierarchy process to map the Coastal Vulnerability Index and the Socioeconomic Vulnerability Index along these coasts to investigate the amplitude and extent of shoreline deterioration resulting from sudden fluctuations in sediment transport to the coastline. We use the western bay of the Gulf of Tunis, the coasts of Tripoli and the Nile Delta as three validation sites for our vulnerability assessment. The statistical Integrated Coastal Vulnerability Index map reveals that 47% of arid North African coasts are characterized by high to very high vulnerability. In particular, we observe that the densely populated deltaic coasts in both Tunisia and Egypt are 70% more vulnerable than any others coast in the eastern Mediterranean Basin. These abnormally high-vulnerability extensive areas are also correlated with significant deterioration of coastal aquifers and hence in crop production, compromising local food security and resulting in increasing outflow migration trends. Both Tunisia and Egypt observed dramatic increases in the net population outflow migration by respectively 62% and 248% between 2000 and 2016, mostly from coastal areas. Our source analysis of the amplitude and extent of these high coastal vulnerabilities suggests that they result from the anthropogenic drivers of damming and rapid urban growth over the last few decades rather than the effects of global warming.

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Exploring space geodetic technology for physical coastal vulnerability index and management strategies: A review

Ocean & Coastal Management ◽

10.1016/j.ocecoaman.2021.105916 ◽

2021 ◽

Vol 214 ◽

pp. 105916

Author(s):

A.I.A. Hamid ◽

A.H.M. Din ◽

N.M. Abdullah ◽

N. Yusof ◽

M.R.A. Hamid ◽

...

Keyword(s):

Management Strategies ◽

Vulnerability Index ◽

Coastal Vulnerability ◽

Coastal Vulnerability Index

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Assessing coastal vulnerability index of tourism site: the case of Mataram Coast

E3S Web of Conferences ◽

10.1051/e3sconf/202015303002 ◽

2020 ◽

Vol 153 ◽

pp. 03002

Author(s):

Aninda W. Rudiastuti ◽

Ati Rahadiati ◽

Ratna S. Dewi ◽

Dewayany Soetrisno ◽

Erwin Maulana

Keyword(s):

Green Infrastructure ◽

Critical Issue ◽

Vulnerability Index ◽

Coastal Areas ◽

Risk Level ◽

Coastal Vulnerability ◽

Coastal Vulnerability Index ◽

Coastal Cities ◽

Tourism Destinations

Many coastal areas and infrastructure suffered from unprecedented hazards such as storms, flooding, and erosion. Thus, it is increasing the vulnerability of urban coastal areas aggravated with the absence of coastal green infrastructure. Given the state of coastal environments, there is a genuine need to appraise the vulnerability of coastal cities on the basis of the latest projected climate scenarios and existing condition. Hence, to asses, the vulnerability level of Mataram coastal, the Coastal Vulnerability Index (CVI) accompanied by pre-assessment of readiness to climate disruption. The CVI used to map coastal into five classes of using GIS. As a case study, this approach applied to Mataram City: one of the tourism destinations in Lombok. Two of sub-districts in Mataram City, Ampenan and Sekarbela, laying in the shorelines have undergone coastal flooding and erosion. One of them, Ampenan sub-district, experienced flooding due to river-discharge and became the most severe location during inundation. Results indicated that along ±9000 meters of Mataram coast possess vulnerability level in moderate to very high-risk level. The assessment also showed that sea-level rise is not the only critical issue but also geomorphology and shoreline changes, the existence of green infrastructure, also human activity parameters took important part to be assessed.

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TOWARDS THE IMPLEMENTATION OF CONTINUOUS COASTAL VULNERABILITY INDEX IN MALAYSIA: A REVIEW

Jurnal Teknologi ◽

10.11113/jt.v71.3819 ◽

2014 ◽

Vol 71 (4) ◽

Cited By ~ 1

Author(s):

Gill J. Ainee ◽

A.M. Anwar ◽

S. Omar K

Keyword(s):

Sea Level Rise ◽

Sea Level ◽

Vulnerability Index ◽

Coastal Vulnerability ◽

Pilot Projects ◽

The West ◽

Adaptation Measures ◽

Coastal Vulnerability Index ◽

Mitigation And Adaptation ◽

Implementation Approach

Climate change has brought about many threats to the ecosystem by inducing natural hazards, particularly sea level rise. Coastal areas then are subjected to many adverse effects of sea level rise, hence posing a risk to the safety of the coastal population, resources and assets. As part of the mitigation and adaptation measures against these effects, the Coastal Vulnerability Index (CVI) was implemented by many coastal regions. The CVI is an index-based tool to map the risks related to coastal changes. In Malaysia, the practice of CVI is still in its initial stages. Whereby, the Department of Irrigation and Drainage (DID) Malaysia had earlier carried out two pilot projects on CVI. The first is located at Tanjung Piai and the second at the west coast of Pulau Langkawi. This paper reviews the definition and concept of CVI. An alternative implementation approach of CVI in Malaysia is also discussed.

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Comparison of Coastal Vulnerability Index applications for Barcelona Province

Ocean & Coastal Management ◽

10.1016/j.ocecoaman.2019.05.001 ◽

2019 ◽

Vol 178 ◽

pp. 104799 ◽

Cited By ~ 15

Author(s):

Aysun Koroglu ◽

Roshanka Ranasinghe ◽

José A. Jiménez ◽

Ali Dastgheib

Keyword(s):

Vulnerability Index ◽

Coastal Vulnerability ◽

Coastal Vulnerability Index

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Mapping vulnerability of Binh Thuan coastal zone

Science and Technology Development Journal ◽

10.32508/stdj.v16i3.1616 ◽

2013 ◽

Vol 16 (3) ◽

pp. 17-29

Author(s):

Hien Thi Thu Le ◽

Hai Quang Ha

Keyword(s):

Coastal Zone ◽

Shoreline Change ◽

Vulnerability Index ◽

Tidal Range ◽

Coastal Vulnerability ◽

Social Vulnerability Index ◽

Change Rate ◽

Coastal Vulnerability Index ◽

Place Vulnerability ◽

Mapping Vulnerability

Binh Thuan coastal zone, nearly 192,9 km shoreline, is well known for residential, recreational areas and minor industries. Shoreline is vulnerable to accelerated sea level rise (SLR) due to its low topography and its high ecological. The present study has been carried out with a view to assess the coastal vulnerability of SLR. Coastal vulnerability map has been built to the calculating results of the place vulnerability index (PVI). The PVI is derived by summing the CVI (coastal vulnerability index) and CSoVl (coastal social vulnerability index) scores. CVI is calculated from nine variables: Geology, geomorphology, coastal slope(%), shoreline change rate (m/yr), mean elevation (m), shoreline direction, mean tidal range (m), wave height (m) and SLR (mm/yr). We use two socioeconomic variables for CSoVI which are socioeconomic variable and relative distance to coast. Results of the vulnerable areas analysis indicate that 120,73 km2 is at very high vulnerable, 84,96 km2 high, 109,23 km2 moderate, 113,99 km2 low and 232,20 km2 very low. The method in this study which combine CVI, CSoVI and PVI together is new protocol of coastal vulnerability assessment for Vietnam coastal zone due to future SLR.

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