Remote sensing and spatial multi-criteria analysis for tsunami vulnerability assessment

2014 ◽  
Vol 23 (3) ◽  
pp. 271-295 ◽  
Author(s):  
Abu Bakar Sambah ◽  
Fusanori Miura
Keyword(s):  
Remote Sensing ◽  
Coastal Areas ◽  
Disaster Mitigation ◽  
Content Type ◽  
Tsunami Disaster ◽  
Inundation Maps ◽  
Vulnerability Map ◽  
Multi Criteria Analysis ◽  
Elevation Model ◽  
The Impact

Purpose – The purpose of this paper is to assess the vulnerability of the Kesennuma area in Japan to a tsunami disaster and to map the area of inundation. Design/methodology/approach – Digital elevation model (DEM) data and ALOS image were used to create maps of the parameters of this study area: elevation, slope, coastal proximity, river, and land use. An analytical hierarchy process was used to assign weights to each parameter and a spatial multi-criteria analysis was applied through cell-based modelling for vulnerability mapping. Findings – The vulnerability map shows that 17.679 km2 of the area could be inundated by a tsunami. High vulnerability areas were mostly found in coastal areas with a sloping coast and a cape area. A low elevation and the presence of rivers or water channels are factors that increase the impact of tsunamis. Inundation areas were predicted to spread in areas identified as having either high vulnerability or slightly high vulnerability. Research limitations/implications – Because of the limited geospatial data, the authors encourage further studies using DEM data with a high spatial resolution. Practical implications – The results of this research can be used as basic information for disaster mitigation and urban planning in coastal areas. Originality/value – This research creates a new approach for assessing which areas could be inundated by tsunamis, based on the vulnerability map generated through remote sensing and spatial multi-criteria analysis. Moreover, the parameters used are very close to those of actual inundation maps.

scholarly journals Estimation of Communities and Tourists Willingness to Pay for Tsunami Disaster Mitigation of Marine Tourism in the Kalianda Coastal Area, South Lampung Regency

2021 ◽  
Vol 19 (1) ◽  
pp. 1-9
Author(s):  
Permana Ari Soejarwo ◽  
Rismawaty Rusdi ◽  
Taryono Kodiran ◽  
Umi Muawanah
Keyword(s):  
Willingness To Pay ◽  
Contingent Valuation Method ◽  
Coastal Areas ◽  
Disaster Mitigation ◽  
Coastal Vegetation ◽  
Economic Losses ◽  
Coastal Protection ◽  
Tsunami Early Warning ◽  
Marine Tourism ◽  
Tsunami Disaster

Indonesia coastal areas have considerable natural disaster potential including in Kalianda District South Lampung Regency. Natural disasters such as earthquakes, tsunamis and volcanic activity are likely to occur in coastal areas. The disaster has an impact on economic losses in the marine tourism area. In order to mitigate tsunami disasters in the marine tourism area of Kalianda District, South Lampung Regency, 3 (three) types of tsunami mitigation are needed, namely: construction of coastal protection, installation of the Tsunami Early Warning System (TEWS) and planting of coastal vegetation. This study aims to determine the value of willingness to pay (WTP) of community and tourists in supporting the management of the three types of tsunami disaster mitigation above by using economic valuation / Contingent Valuation Method (CVM). The results of this study indicate that the WTP value of community for coastal protection management is Rp 15.547/person/month while the WTP value of tourist is Rp 12.030/one time entry. Meanwhile, for the WTP value of TEWS management is obtained Rp 12.174/person/month. WTP value for the management of coastal vegetation is Rp 12.444/person/month. The WTP calculation is based on consideration of 3 (three) factors, namely age, income, livelyhood and education level. This research shows that the community and tourists are willing to pay for the management of the three types of tsunami disaster mitigation through BUMDes and entrance fees for marine tourism area. The three types of tsunami disaster mitigation can protect, provide security and calm to the community and tourists in the marine tourism area of Kalianda District, South Lampung Regency from future tsunami.

scholarly journals An Event-Based Inventory Approach in Landslide Hazard Assessment: The Case of the Skolis Mountain, Northwest Peloponnese, Greece

2020 ◽  
Vol 9 (7) ◽  
pp. 457
Author(s):  
Aspasia Litoseliti ◽  
Ioannis K. Koukouvelas ◽  
Konstantinos G. Nikolakopoulos ◽  
Vasiliki Zygouri
Keyword(s):  
Remote Sensing ◽  
Aspect Ratio ◽  
Remote Sensing Data ◽  
Historical Seismicity ◽  
Landslide Hazard ◽  
Disaster Mitigation ◽  
Earthquake Activity ◽  
Sensing Data ◽  
Reach Angle ◽  
The Impact

Assessment of landslide hazard across mountains is imperative for public safety. Pre- and post-earthquake landslide mapping envisage that landslides show significant size changes during earthquake activity. One of the purposes of earthquake-induced landslide investigation is to determine the landslide state and geometry and draw conclusions on their mobility. This study was based on remote sensing data that covered 72 years, and focused on the west slopes of the Skolis Mountains, in the northwest Peloponnese. On 8 June 2008, during the strong Movri Mountain earthquake (Mw = 6.4), we mapped the extremely abundant landslide occurrence. Historical seismicity and remote sensing data indicate that the Skolis Mountain west slope is repeatedly affected by landslides. The impact of the earthquakes was based on the estimation of Arias intensity in the study area. We recognized that 89 landslides developed over the last 72 years. These landslides increased their width (W), called herein as inflation or their length (L), termed as enlargement. Length and width changes were used to describe their aspect ratio (L/W). Based on the aspect ratio, the 89 landslides were classified into three types: I, J, and Δ. Taluses, developed at the base of the slope and belonging to the J- and Δ-landslide types, are supplied by narrow or irregular channels. During the earthquakes, the landslide channels migrated upward and downward, outlining the mobility of the earthquake-induced landslides. Landslide mobility was defined by the reach angle. The reach angle is the arctangent of the landslide’s height to length ratio. Furthermore, we analyzed the present slope stability across the Skolis Mountain by using the landslide density (LD), landslide area percentage (LAP), and landslide frequency (LF). All these parameters were used to evaluate the spatial and temporal landslide distribution and evolution with the earthquake activity. These results can be considered as a powerful tool for earthquake-induced landslide disaster mitigation

Dynamic Deployment of Smart Inflatable Tsunami Airbags (TABs) for Tsunami Disaster Mitigation

2015 ◽  
Author(s):  
M. Shahinpoor ◽  
H. Asanuma
Keyword(s):  
Tsunami Wave ◽  
Disaster Mitigation ◽  
Viscous Drag ◽  
Tsunami Waves ◽  
Tsunami Disaster ◽  
Air Bags ◽  
Pass Through ◽  
Set Up ◽  
The Impact ◽  
Inflatable Structure

Presented is an initial discussion on dynamic simulation of tsunami air bag deployment in connection with a number of smart inflatable and deployable structures, called tsunami air bags (TAB) that can be rather quickly set up and strongly anchored to the ocean floor to withstand the impact of a tsunami wave and thus protect the buildings and structures on shore. These dedicated inflatable smart structures are designed such that upon tsunami impact they can perform two smart deployment tasks. The first one is for the structure to deploy in the form of a porous structure containing internal folds and pockets and reconfigure due to tsunami impact to perform energy absorption by forcing the tsunami waves to pass through the porous inflatable structure forcing the tsunami waves to lose kinetic energy due to viscous drag and pressurizing the TABs. The second task is related to a special de sign of the inflatable structure that causes it to deploy to either further vertically rise or become a hollow inflatable dam upon the tsunami impact. In these endeavors a wave generation channel was designed and constructed to perform experiments and to simulate tsunami wave impacts on inflatable structures deploying from an underwater location. The initial observation indicates that TABs have a great potential to mitigate tsunami impacts.

scholarly journals Perencanaan Lanskap Mitigasi Tsunami Berbasis Ekosistem Mangrove di Kota Palu

2020 ◽  
Vol 12 (2) ◽  
pp. 41-53
Author(s):  
Mochammad Azkari Hisbulloh Akbar ◽  
Faisol Abdul Kharis ◽  
Oktavia Putri Rahmawati
Keyword(s):  
Landscape Planning ◽  
Analysis Data ◽  
Coastal Areas ◽  
Disaster Mitigation ◽  
Native Plant ◽  
Planning Stage ◽  
Native Plant Species ◽  
Tsunami Disaster ◽  
Mangrove Ecosystems ◽  
Tsunami Mitigation

The coastal areas are vulnerable areas to disaster threats, especially the geological hazards of earthquakes accompanied by tsunamis. Palu City, which is located on the west coast of Sulawesi, experienced a natural disaster of an earthquake, tsunami, and liquefaction on September 28, 2018. Based on the Map of Disaster Prone Index in Central Sulawesi Province, Palu City is a tsunami-prone area that is crossed by the Palu-Koro Fault. Tsunami disaster mitigation efforts in coastal areas can be done by planting mangrove ecosystems as a green barrier. The purpose of this study is to analyze the characteristics of the coastal landscape in Palu City and plan the landscape of tsunami mitigation based on mangrove ecosystems in Palu City. The method used spatial analysis method and descriptive method, as well as the research stage, consists of preparation, data analysis, data synthesis, and landscape planning stage. The basic concept of tsunami mitigation landscape planning is to reduce or eliminate disaster risk in coastal areas based on mangrove ecosystems. The concept of spatial pattern concept consists of high hazard zones, medium hazard zones, and low hazard zones. The concept of vegetation refers to the diversity of mangrove and native plant species as green open spaces and green barriers.

scholarly journals Collaborative Governance of Coral Reef Management and Rehabilitation in Tsunami Disaster Mitigation Efforts

2020 ◽  
Vol 10 (1) ◽  
pp. 1
Author(s):  
Dodi Robby Hari Ismanto ◽  
Rachma Fitriati
Keyword(s):  
Coral Reef ◽  
Collaborative Governance ◽  
Disaster Mitigation ◽  
Economic Losses ◽  
Reef Management ◽  
Tectonic Plates ◽  
Tsunami Waves ◽  
Tsunami Disaster ◽  
Coral Reef Management ◽  
The Impact

The tsunami is the biggest threat to countries around the world tectonic plates and the ring of fire, including Indonesia. The impact of economic losses and heavy casualties made the tsunami worth watching out. Ecosystem-based tsunami disaster mitigation efforts are deemed necessary, considering that 2/3 of Indonesia consists of the sea. The coral reef is one of the coastal ecosystems that can reduce tsunami waves by up to 50% before it hits coastal areas. However, the current condition of coral reefs is very alarming due to the actions of irresponsible humans. Collaboration between stakeholders is needed to carry out ecosystem-based tsunami disaster mitigation efforts. Collaborative governance becomes an essential issue in efforts to build and improve services in the public sector by involving all relevant stakeholders. The sectoral ego of the stakeholders is no longer relevant to be maintained because each actor has their strengths and weaknesses. Collaboration between actors framed in a collaboration platform by having a principled engagement, shared motivation, and collective capacity will produce better results.

scholarly journals Analysis of the dynamics of coastal landform change based on the integration of remote sensing and gis techniques: Implications for tidal flooding impact in pekalongan, central java, Indonesia

2019 ◽  
Vol 38 (3) ◽  
pp. 17-29 ◽  
Author(s):  
Fajar Yulianto ◽  
Suwarsono ◽  
Taufik Maulana ◽  
Muhammad Rokhis Khomarudin
Keyword(s):  
Remote Sensing ◽  
Land Surface ◽  
High Tide ◽  
Coastal Areas ◽  
Change Analysis ◽  
Tidal Flooding ◽  
Gis Techniques ◽  
Coastal Landforms ◽  
Coastal Landform ◽  
The Impact

Abstract Coastal landforms are located in the interface zone between atmosphere, ocean and land surface systems formed by the geomorphic process of erosion, depositional, and subsidence. Studying the dynamics of coastal landform change is important for tracing the relationship between coastal landform changes and tidal flooding in the coastal areas of Pekalongan, Indonesia. The method of integrating remote sensing data with geographic information system (GIS) techniques has been widely used to monitor and analyze the dynamics of morphology change in coastal landform areas. The purpose of this study is to map the dynamics of landform change in the study area from 1978 to 2017 and to analyze its implications for the impact of tidal flooding. The results of the mapping and change analysis associated with coastal landforms can be classified into four landform types: beach, beach ridge, backswamp and alluvial plain. Changes in coastal morphology and landform topography affected by land subsidence and changes in land use/ land cover have contributed to the occurrence of tidal flooding in the study area. Beach ridges perform an important role as natural levees which hold back and prevent the entry of seawater at high tide in coastal areas. A limitation of this study is that, as it focuses only on the physical aspects of coastal landform characteristics for one of the factors causing tidal flooding.

scholarly journals Local Communities Participation in Mangrove Management for Tsunami Disaster Mitigation at Palu City Coastal

2021 ◽  
Vol 940 (1) ◽  
pp. 012084
Author(s):  
J E I Gultom ◽  
H S Hasibuan ◽  
M P Patria
Keyword(s):  
Comparative Method ◽  
Local Communities ◽  
Health Facilities ◽  
Disaster Mitigation ◽  
Educational Facilities ◽  
Loss Of Life ◽  
Tsunami Disaster ◽  
The Impact ◽  
Research Show

Abstract In September 2018 there was an earthquake with a magnitude of 7.5 Mw in Palu Bay, which was followed by a tsunami. The impact of this disaster is the destruction of building infrastructure, the environment, and loss of life. 4,194 people died and damaged 8,107 buildings, 43 health facilities and 386 educational facilities. Mangroves as one of the ecosystems located on the coast can reduce the impact of the tsunami. This research aims to analyze the participation of local communities in mangrove management. The method used in this research is qualitative, and the analysis used in this research is descriptive and comparative method, and the data used in this research is the results of interviews obtained from several communities who live around the coast of Palu city. The importance of this research is to compare the participation of the community in three research locations. The results of the research show that communities at the research locations are starting to realize the importance of mangroves for reducing the impact of the tsunami, so that after 2018 many communities have started planting and managing mangroves.

Estimation of solar radiation from digital elevation model in area of rough topography

2016 ◽  
Vol 13 (5) ◽  
pp. 453-460 ◽  
Author(s):  
Lurwan Mahmoud Sabo ◽  
Norman Mariun ◽  
Hashim Hizam ◽  
Mohd Amran Mohd Radzi ◽  
Azmi Zakaria
Keyword(s):  
Solar Radiation ◽  
Digital Elevation Model ◽  
Spatial Data ◽  
Energy Planning ◽  
Solar Photovoltaic ◽  
Content Type ◽  
Digital Elevation ◽  
Elevation Model ◽  
The Impact ◽  
Topographic Parameters

Purpose The purpose of this study is to evaluate the reliability of the technique for estimating solar radiation in areas of rough topography and to detect the source of error and means for improvement. Design/methodology/approach Spatial data of the study area in the form of digital elevation model (DEM) coupled with geographic information system (GIS) were used to estimate the monthly solar radiation at locations with rough topography. The generated data were compared with measured data collected from all the selected locations using NASA data. Findings The results show that the variation in topographic parameters has a strong influence on the amount of solar radiation received by two close locations. However, the method performed well for solar radiation estimated in the areas of rough topography. Research limitations/implications The proposed approach overestimates the monthly solar radiation as compared with NASA data due to the impact of topographic parameters accounted for by the model which are not accounted by conventional methods of measurements. This approach can be improved by incorporating the reflected component of radiation in the model used to estimate the solar radiation implemented in the GIS. Originality/value The approach of using GIS with DEM to estimate solar radiation enables to identify the spatial variability in solar radiation between two closest locations due to the influence of topographic parameters, and this will assist in proper energy planning and decision making for optimal areas of solar photovoltaic installation.

scholarly journals VULNERABILITY LEVEL MAP OF TSUNAMI DISASTER IN PANGANDARAN BEACH, WEST JAVA

2014 ◽  
Vol 10 (2) ◽  
Author(s):  
Iqoh Faiqoh ◽  
Jason Lumban Gaol ◽  
Marisa Mei Ling
Keyword(s):  
Active Region ◽  
Coastal Region ◽  
Disaster Mitigation ◽  
Southern Coast ◽  
West Java ◽  
Tsunami Disaster ◽  
Vulnerability Map ◽  
High Level ◽  
Tsunami Vulnerability Assessment ◽  
Very High

Indonesia is located in a seismic active region where tsunami often occur. One of tsunami prone areas in Indonesia is southern coast of Java, such as the coastal areas of Pangandaran, West Java. One of the instruments in the tsunami disaster mitigation is the vulnerability map of coastal region on tsunami. Analyses of tsunami vulnerability assessment was performed by using merger or overlay methods in Geographic Information Systems (GIS). The parameters used to analyze tsunami vulnerability level were elevation, topography, landuse, coastal border, and river banks. The vulnerability were divided into five classes i.e., very high, high, medium, low, and very low. Results showed that Pananjung, Babakan, Pangandaran (Pangandaran District); and Sukaresik and Cikembulan (Sidamulih District) sub-districts were identified as areas of very high level of tsunami vulnerability with total area of 737.703 hectares. Areas with low level of vulnerability were Pagergunung, Putrapinggan, and Kersaratu sub-districts with total area of 4,816.204 hectares.

Tsunami Disaster Mitigation by Integrating Comprehensive Countermeasures in Padang City, Indonesia

2012 ◽  
Vol 7 (1) ◽  
pp. 48-64 ◽  
Author(s):  
Fumihiko Imamura ◽  
◽  
Abdul Muhari ◽  
Erick Mas ◽  
Mulyo Harris Pradono ◽  
...  
Keyword(s):  
Disaster Mitigation ◽  
Frame Structure ◽  
Earthquake Scenario ◽  
Tsunami Disaster ◽  
Inundation Area ◽  
Residential Population ◽  
Vertical Evacuation ◽  
Evacuation Routes ◽  
Tremor Analysis ◽  
The Impact

This paper describes the results of a comprehensive analysis for tsunami disaster mitigation in Padang City, Indonesia. Assessment consists of several steps, starting from the construction of tsunami hazard maps based on the most probable earthquake scenario in the future. Results are then analyzed to determine the impact on residential population along potential evacuation routes. Next, from the standpoint of hazards, we move to the analysis of human’s vulnerability during evacuation. The term “vulnerability” is associated with available evacuation time. Here, we conducted a static evacuation model using the GIS platform and a dynamic approach using multiagent paradigm. Results of evacuationmodeling suggest that some residents may not have enough time to leave the tsunami inundation area before the first wave comes. We therefore propose using relatively high buildings as vertical evacuation sites. One of potential candidates that survived from a devastated earthquake with 7.6 Mw in 2009 is selected to be further analyzed its antiseismic deficiencies based on design ground motion obtained from micro-tremor analysis and synthesized recorded wave in Padang. As a result, even though the building underwent some damage, the frame structure was able to withstand the shaking and keep the building from collapsing.

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