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 ◽  
...  

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.

2012 ◽  
Vol 7 (1) ◽  
pp. 19-25 ◽  
Author(s):  
Yuichiro Tanioka ◽  
◽  
Hamzah Latief ◽  
Haris Sunendar ◽  
Aditya Riadi Gusman ◽  
...  

Several large earthquakes have recently occurred along the Sumatra-Java subduction zone, the 2004 great Sumatra-Andaman earthquake, the 2005 great Nias earthquake, the 2006 West Java tsunami earthquake, the 2007 great Bengkulu earthquake, and the 2010Mentawai tsunami earthquakes. Serious tsunami disasters were caused by the great underthrust earthquakes which ruptured the plate interface near the trench such as the 2004 Sumatra-Andaman, 2006West Java, 2010Mentawai earthquakes. At Palabuhanratu, maximum tsunami height distribution and inundation areas were computed from expected fault models located near the Java trench. The results shows that the most populated areas of Palabuhanratu would be severely damaged by the expected tsunami caused by the fault model of Mw 8.5. After discussing tsunami disaster mitigation measures with the local government, the result of tsunami inundation area in this study were used to decide tsunami evacuation areas and evacuation routes. The local government also installed tsunami evacuation sign boards near the coast.


2020 ◽  
Vol 4 (1) ◽  
pp. 87-99
Author(s):  
Dian Agustina ◽  
Etis Sunandi ◽  
Sigit Nugroho

The first objective of this activity is to increase knowledge and understanding of the rescue procedures, evacuation routes, and emergency response plans when a large earthquake occurs. The second objective is to increase the knowledge and ability to mobilize available resources. With this knowledge and capability, the community can choose and sort out the resources that must be prioritized, so that losses can be reduced as little as possible. Referring to the results of the study, reducing the impact of earthquake and tsunami disaster risk is greatly influenced by emergency response plan factors, disaster warning system factors, knowledge factors, policy and guidance factors, and the ability of team mobilization. The conclusion obtained from the results of this activity is that the Air Rami Sub-district community gained increased knowledge and understanding of earthquake and tsunami mitigation. This can be seen from the enthusiasm of stakeholders and the public in participating in socialization activities. It is also supported by the Wilcoxon statistical test, the result showed that socialization increases public knowledge in understanding disaster mitigation, especially earthquakes and tsunamis.


Author(s):  
M. Shahinpoor ◽  
H. Asanuma

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.


2020 ◽  
Vol 2 (1) ◽  
pp. 47-55
Author(s):  
Suci Maharani ◽  
Erianjoni Erianjoni

SMAN 4 Pariaman is located in an area prone to disasters, especially the earthquake and tsunami. SMAN 4 Pariaman is located on the coast of the West Coast of Sumatra, which belongs to the tsunami red zone in Pariaman City. Based on this, all school residents must be prepared to face the disasters that will occur, especially the earthquake and tsunami. This type of research is a combination of research (Mixed Methods). This research is a step of research by combining two pre-existing forms of research namely qualitative research and quantitative research. The results of the study found 5 main priorities, namely 1) Optimization of meeting the basic needs of disaster management with a value of (5,000), 2) Application of evacuation routes and zones of vulnerability to our position or presence (4,556), 3) Socialization through facilities and infrastructure prepared by parties BPBD with grades (4,412), 4) Make maps to the evacuation sites of schools with grades (4,200), 5) Facilitate evacuation route signs such as posters with grades (3,587). The results of the FGD and data processing by data processing with Bayes method obtained 5 main priorities, namely 1) Schools must incorporate knowledge about disasters into the curriculum or subjects with values ​​(5,100), 2) Improvement of earthquake resistant facilities (4,467), 3) Schools must enter disaster mitigation activities into extracurricular values ​​(3,933), 4) Making maps of tsunami evacuation routes to TES with values ​​(3,923), 5) Conduct TRC education and training with a value of 3,857.


2020 ◽  
Vol 10 (1) ◽  
pp. 1
Author(s):  
Dodi Robby Hari Ismanto ◽  
Rachma Fitriati

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.


Teras Jurnal ◽  
2019 ◽  
Vol 9 (2) ◽  
pp. 165
Author(s):  
Asril Zevri

<p><em>Sei Sikambing River Basin is one of the Sub Das of Deli River which has an important role in water requirement in Medan City. Rainfall with high intensity is supported by changes in land use causing floods which reach 0.6 m to 1 m from river banks. The purpose of this study was to map the Sei Kambing River basin flood inundation area as information to the public in disaster mitigation efforts. The scope of this research is to analyze the maximum daily rainfall with a return period of 2 to 100 years, analyze flood discharge with a return period of 2 to 100, analyze flood water levels with HECRAS software, and spatially map flood inundation areas with GIS. The results showed that the return flood rate of the Sikambing watershed with a 25-year return period of 211.94 m<sup>3</sup>/s caused the flood level of the Sikambing watershed to be between 1.7 m to 3.7 m. The Sikambing watershed flood inundation area reached an area of 1.19 Km<sup>2</sup> which resulted in the impact of flooding on 5 sub-districts in Medan, namely Medan Selayang District, Medan Sunggal, Medan Petisah, Medan Helvetia, and West Medan.</em><em></em></p>


2014 ◽  
Vol 23 (3) ◽  
pp. 271-295 ◽  
Author(s):  
Abu Bakar Sambah ◽  
Fusanori Miura

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.


2021 ◽  
Vol 940 (1) ◽  
pp. 012084
Author(s):  
J E I Gultom ◽  
H S Hasibuan ◽  
M P Patria

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.


2019 ◽  
Vol 1 (2) ◽  
pp. 231-239
Author(s):  
Windy J. Mononimbar

There are five large rivers which pass through and empties into Manado City, one of them is the Sario River. In 2014, the settlements around the Sario watershed area was severely damaged due to flash floods, in fact, there was one neighborhood in Kelurahan Ranotana Weru where almost all houses were washed away and were lost due to the flood. In addition, there are also fatalities and other material losses. Flood disasters in the Sario watershed area occur periodically every year, but the most severe damage was in 2014, it was even designated as a national disaster because it struck almost the entire city of Manado. Therefore, a study was conducted to obtain the concept of flood disaster mitigation at this location which is expected to prevent disaster, reduce risk and minimize the impact that will occur. This concept is divided into structural and non-structural mitigation. Structural mitigation includes efforts to minimize disasters through the construction of various physical infrastructure and technological approaches, such as the construction of disasters-resistant buildings, the construction of canals for flood prevention, evacuation routes, green open spaces, etc. Non-structural mitigation includes making policies or rules such as spatial planning or community capacity building. This research found that the boundary area of ​​the river needs to be rearranged, the river embankment and drainage channel are repaired, the high density of the building needs to be reduced to provide sufficient open spaces, the need to build disaster evacuation routes and improved building conditions.


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