scholarly journals Potential Economic Losses Due to Tidal Inundation and Flood at Semarang City

2014 ◽  
Vol 28 (2) ◽  
Author(s):  
Ifan R Suhelmi ◽  
Achmad Fahrudin ◽  
Ferdinand Hariyanto Triwibowo
Keyword(s):  
Sea Level Rise ◽  
Sea Level ◽  
Land Subsidence ◽  
Economic Losses ◽  
Tidal Inundation ◽  
International Panel ◽  
Digital Elevation ◽  
Elevation Model ◽  
Topographic Condition ◽  
The Impact

Coastal city of Semarang is susceptible to the impact of coastal hazard due to its flat topographic condition. Various environmental problems are faced by Semarang involve tidal inundation, land subsidence, and floods during rainy season. This study was conducted to examine the potential economic losses caused by the sea level rise phenomenon. Distribution of inundated area mapped using Digital Elevation Model and Land Subsidence data. The Scenarios of International Panel on Climate Change (2007) sea level rises used to build a model of inundated area that notes by 2030 the rise of sea level rise at 13.4 cm. The inundated map was overlayed with landuse map to calculate the potential economic losses. The results show that the inundated area that occurred in 2030 was 1,718.2 ha with the potential economic losses Rp. 6,130 trillion. With the land subsidence scenario that happen at the area, inundated area increased to 5,171.3 ha with the eonomic potential loss about Rp. 28,724 trillion.

scholarly journals New elevation data triple estimates of global vulnerability to sea-level rise and coastal flooding

2019 ◽  
Vol 10 (1) ◽  
Author(s):  
Scott A. Kulp ◽  
Benjamin H. Strauss
Keyword(s):  
Sea Level Rise ◽  
Sea Level ◽  
High Tide ◽  
Water Levels ◽  
Low Carbon ◽  
Digital Elevation ◽  
Elevation Data ◽  
Global Mean Sea Level ◽  
Elevation Model ◽  
Global Mean

Abstract Most estimates of global mean sea-level rise this century fall below 2 m. This quantity is comparable to the positive vertical bias of the principle digital elevation model (DEM) used to assess global and national population exposures to extreme coastal water levels, NASA’s SRTM. CoastalDEM is a new DEM utilizing neural networks to reduce SRTM error. Here we show – employing CoastalDEM—that 190 M people (150–250 M, 90% CI) currently occupy global land below projected high tide lines for 2100 under low carbon emissions, up from 110 M today, for a median increase of 80 M. These figures triple SRTM-based values. Under high emissions, CoastalDEM indicates up to 630 M people live on land below projected annual flood levels for 2100, and up to 340 M for mid-century, versus roughly 250 M at present. We estimate one billion people now occupy land less than 10 m above current high tide lines, including 230 M below 1 m.

scholarly journals Impact of sea level rise and shoreline changes in the tropical island ecosystem of Andaman and Nicobar region, India

2021 ◽  
Author(s):  
mageswaran thangaraj ◽  
Sachithanandam V ◽  
Sridhar R ◽  
Manik Mahapatra ◽  
R Purvaja ◽  
...  
Keyword(s):  
Remote Sensing ◽  
Sea Level Rise ◽  
Sea Level ◽  
Remote Sensing Data ◽  
Data Sets ◽  
Andaman Island ◽  
Shoreline Changes ◽  
Digital Elevation ◽  
Analysis System ◽  
Elevation Model

Abstract We report here a four decades of shoreline changes and possible sea level rise (SLR) impact on landuse/landcover (LULC) in Little Andaman Island by using remote sensing (RS) and GIS techniques. A total of six remote sensing data sets covering years between 1976 and 2018 were used to understand the shoreline changes. Moreover, a Digital Shoreline Analysis System (DSAS) was used to estimate short- and long- term shoreline changes from ArcGIS environment. Besides, the Island vulnerability due to SLR was studied through using digital elevation model (DEM). As a result of Sumatra earthquake (2004), the results were showed a significant variation in shorline upliftment and subsidence. The land subsidence was noticed in the range of 1042-3077 ha with sea level rise between 1 and 5 m. Hence, we conclude that Little Andaman Island is vulnerable to SLR and overwhelm low elvation coastal zone.

scholarly journals Digital elevation model generation using UAV-SfM photogrammetry techniques to map sea-level rise scenarios at Cassino Beach, Brazil

2020 ◽  
Vol 2 (12) ◽  
Author(s):  
Deivid Cristian Leal-Alves ◽  
Jair Weschenfelder ◽  
Miguel da Guia Albuquerque ◽  
Jean Marcel de Almeida Espinoza ◽  
Marlize Ferreira-Cravo ◽  
...  
Keyword(s):  
Sea Level Rise ◽  
Sea Level ◽  
Digital Elevation Model ◽  
Model Generation ◽  
Digital Elevation ◽  
Elevation Model

scholarly journals Assessing the impact of sea level rise on port operability using LiDAR-derived digital elevation models

2019 ◽  
Vol 232 ◽  
pp. 111318 ◽  
Author(s):  
Vicente Gracia ◽  
Joan Pau Sierra ◽  
Marta Gómez ◽  
Mónica Pedrol ◽  
Sara Sampé ◽  
...  
Keyword(s):  
Sea Level Rise ◽  
Sea Level ◽  
Digital Elevation Models ◽  
Digital Elevation ◽  
The Impact

scholarly journals New estimates of potential impacts of sea level rise and coastal floods in Poland

2015 ◽  
Vol 3 (4) ◽  
pp. 2493-2536
Author(s):  
D. Paprotny ◽  
P. Terefenko
Keyword(s):  
Sea Level Rise ◽  
Sea Level ◽  
Spatial Data ◽  
Storm Surges ◽  
Sea Levels ◽  
Digital Elevation ◽  
Significant Damage ◽  
Structural Breakdown ◽  
Elevation Model ◽  
Made In

Abstract. Polish coastal zone is thought to be of the most exposed to sea level rise in Europe. With climate change expected to raise mean sea levels between 26 and 200 cm by the end of the century, and storms increasing in severity, accurate estimates of those phenomena are needed. Recent advances in quality and availability of spatial data in Poland made in possible to revisit previous estimates. Up-to-date detailed information on land use, population and buildings were used to calculate inundation risk at a broad range of scenarios. Inclusion, though imperfect, of flood defences from a high-resolution digital elevation model contributes to a further improvement of estimates. The results revealed that even by using a static "bathtub fill" approach the amount of land, population or assets at risk has been significantly revised down. Sea level rise or storm surges are unlikely to reach intensity required to cause significant damage to the economy or endanger the population. The exposure of different kinds of assets and sectors of the economy varies to a large extent, though the structural breakdown of potential losses is remarkably stable between scenarios.

scholarly journals Sea-Level Rise in Northern Germany: A GIS-Based Simulation and Visualization

2020 ◽  
Vol 70 (4) ◽  
pp. 145-154
Author(s):  
Caroline Schuldt ◽  
Jochen Schiewe ◽  
Johannes Kröger
Keyword(s):  
Sea Level Rise ◽  
Sea Level ◽  
Coastal Protection ◽  
Economic Systems ◽  
Climate Scenarios ◽  
Northern Germany ◽  
The North ◽  
Digital Elevation ◽  
Elevation Model ◽  
The One

AbstractThe future sea-level rise caused by climate change will lead to coastal regions being flooded and ecological and socio-economic systems being disrupted. This study examines the question of how the sea-level rise in Northern Germany can be simulated on a regional level and visualized as a media map. The simulation is based on the TanDEM-X digital elevation model, IDW interpolated current measurements of the sea level and the vertical land movement, as well as regional sea surface elevation projections for the year 2100. Two different climate scenarios were applied based on IPCC forecasts. Particular attention was paid to transforming elevation systems into orthometric heights. In addition, the uncertainties existing in the simulation of future developments were quantified and visualized. Depending on the applied scenario, an area between 1061 and 9004 km2 will be inundated. Accordingly, the affected population varies between 5477 and 626,880 people. The calculation of the inundated areas reveals serious differences; between the various climate scenarios, as well as between the North and Baltic coasts, but above all between the assumption of a stable coastal protection on the one hand and a dike breach on the other. Based on the requirements of journalistic cartography and the specific requirements of the German broadcasting company Norddeutscher Rundfunk (NDR), static maps were developed, which will be shown as a sequence starting with the least and ending with the most severe possible impact.

scholarly journals Sea-level rise along the Emilia-Romagna coast (Northern Italy) at 2100: scenarios and impacts

2017 ◽  
Author(s):  
Luisa Perini ◽  
Lorenzo Calabrese ◽  
Paolo Luciani ◽  
Marco Olivieri ◽  
Gaia Galassi ◽  
...  
Keyword(s):  
Climate Change ◽  
Sea Level Rise ◽  
Sea Level ◽  
Land Subsidence ◽  
Coastal Plain ◽  
River Mouth ◽  
Northern Italy ◽  
Po River ◽  
Mitigation And Adaptation ◽  
The Impact

Abstract. As a consequence of climate change and human-induced land subsidence, coastal zones are directly impacted by sea-level rise. In some particular areas, the effects on the ecosystem and the urbanisation are particularly enhanced. We focus on the Emilia-Romagna coastal plain in Northern Italy, bounded by the Po river mouth to the north and by the Apennines to the south. The plain is ~ 130 km long and is characterised by wide areas below sea level, in part reclaimed wetlands. In this context, several morphodynamic factors make the shore and back-shore unstable. During next decades, the combined effects of land subsidence and of the sea-level rise in consequence of climate change are expected to enhance the shoreline instability, leading to a further retreat. The consequent loss of beaches would impact the economy of the region, tightly connected with tourism infrastructures. Furthermore, the loss of wetlands and dunes would threaten the ecosystem, crucial for the preservation of life and environment. These specific conditions show the importance of a precise definition of the possible local impacts of the ongoing and future climate variations. The aim of this work is the characterisation of vulnerability in different sectors of the coastal plain and the recognition of the areas in which human intervention is urgently required. The IPCC AR5 sea-level scenarios are merged with new high resolution terrain models, current data for local subsidence and predictions of a flooding model (in_CoastFlood) to develop different scenarios for the impact of sea-level rise to year 2100. First, the potential land loss due to the combined effect of subsidence and sea-level rise is extrapolated. Second, the increase of floodable areas in consequence of storm surges is quantitatively determined. The results are expected to support the regional mitigation and adaptation strategies designed in response to climate change.

scholarly journals Genangan Banjir Pasang Pada Kawasan Pemukiman di Kecamatan Sayung, Kabupaten Demak – Provinsi Jawa Tengah

2015 ◽  
Vol 18 (1) ◽  
Author(s):  
Petrus Subardjo ◽  
Raden Ario
Keyword(s):  
Water Level ◽  
Digital Elevation Model ◽  
Model Verification ◽  
Sea Surface ◽  
Tidal Inundation ◽  
Central Java ◽  
Inundation Area ◽  
Digital Elevation ◽  
Elevation Model ◽  
The Impact

Wilayah pedesaan di Kecamatan Sayung, Kabupaten Demak merupakan daerah pemukiman yang sering terjadi banjir pasang. Banjir pasang yang menggenangi daerah tersebut karena ketinggian daratan sejajar dan atau lebih rendah dengan muka air laut. Hal ini diduga disebabkan karena terjadinya pasang surut tinggi tertinggi atau HHWL (High Highest Water Level) di wilayah tersebut, sehingga diperlukan suatu tindakan untuk menanggulangi maupun mengurangi dampak yang ditimbukan oleh hal tersebut. Tujuan penelitian ini adalah untuk mengetahui kenaikan pasang surut tinggi tertinggi dari setiap tahunnya dari data nilai HHWL tertinggi setiap bulannya dalam satu tahun. Pengolahan data menggunakan metode admiralty dari tahun 2004-2013 dan tipe pasang surut di Kecamatan Sayung, Kabupaten Demak, serta pemetaan luas area genangan dan luas kawasan pemukiman pada area genangan banjir pasang di Kecamatan Sayung, Kabupaten Demak. Metode yang digunakan dalam penelitian ini adalah metode deskriptif yang bersifat eksploratif yaitu bertujuan untuk menggambarkan keadaan atau status fenomena. Penelitian ini dapat memberikan gambaran tentang situasi dan kondisi secara lokal dan hasilnya tidak dapat digeneralisasikan untuk waktu dan tempat yang berbeda. Selain itu perlu diketahui faktor-faktor penyebab banjir pasang di wilayah tersebut. Data utama yang dibutuhkan adalah data pasang surut, Digital Elevation Model (DEM), titik verifikasi banjir pasang pada kawasan pemukiman,peta tata guna lahan Kabupaten Demak tahun 2008 dan peta rupabumi tahun 2001. Berdasarkan hasil dari penelitian ini diketahui bahwa luas genangan banjir pasang yang terjadi di Kecamatan Sayung, Kabupaten Demak pada tahun 2013 adalah 1.938, 42 ha dan luas kawasan pemukiman pada area genangan sebesar 140,05 ha.Laju kenaikan Pasang surut tinggi tertinggi (HHWL) High highest Water Level dari tahun 2004 sampai tahun 2013 adalah sebesar 13.63 dan nilai HHWL tertinggi yang digunakan untuk membuat genangan banjir pasang dalam penelitian ini adalah bulan desember tahun 2013 sebesar 235.09 cm. Sedangkan Tipe pasang surut yang ada perairan Kecamatan Sayung, Kabupaten Demak adalah campuran condong harian tunggal.Kata kunci : Genangan, Banjir, Pasang, Kawasan Pemukiman, Kecamatan Sayung, Kabupaten DemakSubdistrict Sayung, Demak is the frequent flooding in residental areas. Flood tides inunndated areas which have a height of land area equal with the sea surface or lower than the sea surface. The areas thatoften Floods are Sriwulan Village, Purwosari Village, Sidogemah Village,Tugu Village, Surodadi Village, Gemulak Village, Bedono Village and Timbul Sloko Village. This happened because high highest water level at that areas, so that the action nasneccesary to overcome or decrease the impact. The purpose of this research was to determine the highest tidalrise in every year from the highest HHWL data values of each month in a year with admiralty data processing method from 2004-2013 as well as in the sub-type tidal Sayung, Demak and inundation mapping area and extensive residental areas to tidal inundation area in the district Sayung, Demak - Central Java Province. Method used in this research is descriptive explorative method that intoonded to describle the state or status of phenomenom. This research can provide an overvieuw of situation and conditions locally and the results may not generalizable to a different time and place. Besides that we need to known the causing factors of flooding in the region the main data we need required tidal flooding data, DEM (Digital Elevation Model), verification point in the settlement area, land use maps Demak in 2008 and 2001 topographical map. Based on the result of this research that widespread inundation flooding that occured in the district Sayung Demak in 2013 is 1.938,42 ha and extensive of residental areas to the inundation area of 140.05 ha. The rate of the highest tidal rise (HHWL) from 2004 to 2013 amounted 13.63 and the highest value of HHWL used to create tidal inundation in the study was desember 2013 amounted to 235.09 cm. While type of tidal waters that exist in the district Sayung, Demak is a mixture of single-learning daily.Keywords : Inundated, Flood Tide, Settlements, Subdistrict Of Sayung, Demak Regency

Coping with Sea-Level Rise in African Protected Areas: Priorities for Action and Adaptation Measures

BioScience ◽  
2020 ◽  
Vol 70 (10) ◽  
pp. 924-932
Author(s):  
José C Brito ◽  
Marisa Naia
Keyword(s):  
Protected Areas ◽  
Sea Level Rise ◽  
Sea Level ◽  
African Countries ◽  
Adaptation Measures ◽  
Management Actions ◽  
Management Interventions ◽  
Proactive Management ◽  
Digital Elevation ◽  
Elevation Model

Abstract Sea-level rise, a consequence of climate change, is progressively affecting coastal areas around the globe. In turn, protected areas are keystones for protecting coastal biodiversity and the ecosystems services ensuring sustainable livelihoods. Effective management and adaptation plans are needed to maintain ecological function and integrity. In the present article, we used a coastal digital elevation model to simulate inundation surfaces and a prioritization index for ranking management interventions in 278 coastal protected areas from 27 African countries. Of these, 15 areas and eight countries demonstrated a high need for proactive management actions because of high levels of biodiversity, international conservation relevance, and exposure to sea-level rise. From the array of management actions available, tailored solutions are being implemented according to the morphology and location of the areas. Concerted action by international, government, and local partners is required for successful protection of the areas, including implementation of adaptive plans and monitoring progress schemes.

scholarly journals Sea-level rise along the Emilia-Romagna coast (Northern Italy) in 2100: scenarios and impacts

2017 ◽  
Vol 17 (12) ◽  
pp. 2271-2287 ◽  
Author(s):  
Luisa Perini ◽  
Lorenzo Calabrese ◽  
Paolo Luciani ◽  
Marco Olivieri ◽  
Gaia Galassi ◽  
...  
Keyword(s):  
Climate Change ◽  
Sea Level Rise ◽  
Sea Level ◽  
Land Subsidence ◽  
Coastal Plain ◽  
River Mouth ◽  
Northern Italy ◽  
Intergovernmental Panel ◽  
Mitigation And Adaptation ◽  
The Impact

Abstract. As a consequence of climate change and land subsidence, coastal zones are directly impacted by sea-level rise. In some particular areas, the effects on the ecosystem and urbanisation are particularly enhanced. We focus on the Emilia-Romagna (E-R) coastal plain in Northern Italy, bounded by the Po river mouth to the north and by the Apennines to the south. The plain is  ∼ 130 km long and is characterised by wide areas below mean sea level, in part made up of reclaimed wetlands. In this context, several morphodynamic factors make the shore and back shore unstable. During next decades, the combined effects of land subsidence and of the sea-level rise as a result of climate change are expected to enhance the shoreline instability, leading to further retreat. The consequent loss of beaches would impact the economy of the region, which is tightly connected with tourism infrastructures. Furthermore, the loss of wetlands and dunes would threaten the ecosystem, which is crucial for the preservation of life and the environment. These specific conditions show the importance of a precise definition of the possible local impacts of the ongoing and future climate variations. The aim of this work is the characterisation of vulnerability in different sectors of the coastal plain and the recognition of the areas in which human intervention is urgently required. The Intergovernmental Panel on Climate Change (IPCC) Fifth Assessment Report (AR5) sea-level scenarios are merged with new high-resolution terrain models, current data for local subsidence and predictions of the flooding model in_CoastFlood in order to develop different scenarios for the impact of sea-level rise projected to year 2100. First, the potential land loss due to the combined effect of subsidence and sea-level rise is extrapolated. Second, the increase in floodable areas as a result of storm surges is quantitatively determined. The results are expected to support the regional mitigation and adaptation strategies designed in response to climate change.

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