scholarly journals Exposures of Building and Population to Tsunami Hazard in Pangandaran Beach, Indonesia

2021 ◽  
Vol 925 (1) ◽  
pp. 012037
Author(s):  
Martha Alvianingsih ◽  
Willy Ivander Pradipta ◽  
Intan Hayatiningsih ◽  
Nuraini Rahma Hanifa
Keyword(s):  
Population Distribution ◽  
Tsunami Hazard ◽  
Disaster Mitigation ◽  
Aerial Photographs ◽  
Historical Event ◽  
Intraplate Earthquake ◽  
Tsunami Inundation ◽  
Tsunami Disaster ◽  
Tsunami Risk ◽  
The Government

Abstract Pangandaran and Pananjung villages are located in the southern coast of Java Island, prone to tsunami hazard originating from a megathrust earthquake off south of Java Island. Those villages experience a tsunami earthquake on 2006 from an M7.8 earthquake. The National Center for Earthquake Studies released a map of the sources and hazards of Indonesia’s earthquake in 2017 with a potential earthquake of magnitude 8.7-9.2 in the megathrust of Java Island. This research aims to estimate the potential number of buildings and the population affected by tsunami inundation from two scenario; first scenario is based on historical event of a M7.8 intraplate earthquake, and second scenario is based on a plausible M8.7 intraplate earthquake. The first scenario tsunami modeling resulted an inundation of 108.606 ha, while in the second scenario estimate an 867.351 ha of inundation area. Building data is obtained by digitizing aerial photographs taken in November 2021. The calculation of potential affected buildings is carried out by overlaying the tsunami inundation data with the existing building data in the study area. Meanwhile, the population data used is obtained from the local government in 2021. To obtain the number of the affected population, population distribution is first carried out in each class of land cover, overlaid with the tsunami inundation data. The estimated number of buildings and population affected by scenario 1 and 2 in Pangandaran Village is 1,040 buildings along with 2,765 people, and 4,216 buildings with 11,209 people respectively. While in Pananjung Village, it is estimated a total of 149 buildings with 350 people affected, and 4,039 buildings with 9,493 people affected respectively. This indicate that scenario 2 impact is potentially 4 times greater than scenario 1 in Pangandaran village, and 27 times greater in Pananjung village, implying a different strategy of tsunami risk reduction should be taken to save more lives. The results of this study can be used as a basis for policymaking by the government in carrying out a more effective tsunami disaster mitigation efforts in Pangandaran and Pananjung Villages. This study also calls for reevaluation of coastal villages tsunami risk based on each plausible scenario.

scholarly journals Mapping of IOC-UNESCO Tsunami Ready Indicators in the Pangandaran Village, Indonesia

2021 ◽  
Vol 925 (1) ◽  
pp. 012041
Author(s):  
Candida Aulia De Silva Nusantara ◽  
Wiwin Windupranata ◽  
Intan Hayatiningsih ◽  
Nuraini Rahma Hanifa
Keyword(s):  
Local Community ◽  
Aerial Photographs ◽  
Tsunami Disaster ◽  
Tsunami Risk ◽  
Tourist Village ◽  
The Government ◽  
Evacuation Plan ◽  
Village Government ◽  
Tsunami Preparedness ◽  
Near Future

Abstract Pangandaran Village is a tourist village located in Pangandaran Regency, West Java Province, Indonesia. The beautiful view of sand beaches and abundant marine resources make Pangandaran Village has great economic potential. However, in 2006, an earthquake with a magnitude of 7.7 Mw triggered a tsunami disaster in the Pangandaran area that caused more than 600 fatalities, injuries, and damage to buildings, especially in Pangandaran Village. Based on current research, there is potential for an 8.7 magnitude earthquake off the south coast of Java in the near future, triggering an enormous tsunami. The coastal community in Pangandaran Regency has been building a tsunami risk reduction strategy to anticipate the tsunami disaster. In Pangandaran Village, the local community is piloting the 12 tsunami ready indicators following the guideline from UNESCO-IOC. Therefore, this study aims to map 12 tsunami ready IOC-UNESCO indicators in Pangandaran Village to evaluate which indicators the government and community of Pangandaran Village. The method used in mapping 12 tsunami ready indicators in Pangandaran Village is to take data in the field by doing aerial photographs, conducting interviews with the village government and other related local stakeholders, mapping tsunami evacuation plan and infrastructure, and disseminating questionnaires to the community to find out the response to the tsunami disaster. Based on the IOC-UNESCO tsunami indicator mapping results, all indicators have been fulfilled. However, several other aspects of tsunami preparedness indicators still need to be improved to strengthen tsunami preparedness in Pangandaran.

scholarly journals Case study: mapping the tsunami-hazard zone in the Pasir Jambak sub-district, in Padang, Indonesia

2021 ◽  
Vol 331 ◽  
pp. 04006
Author(s):  
Leli Honesti ◽  
Meli Muchlian
Keyword(s):  
Large Scale ◽  
Grid Point ◽  
Tsunami Hazard ◽  
Decision Makers ◽  
Tsunami Inundation ◽  
Tsunami Risk ◽  
Nested Grid ◽  
Inundation Map ◽  
Run Up

A tsunami hazard is an adverse event that causes damage to properties and loss of life. The problem in assessing a tsunami risk zone for a small area is significant, as available tsunami inundation zone data does not give detailed information for tsunami inundation and run-up in every nested grid. Hence, this study aims to establish a tsunami risk map in the Pasir Jambak sub-district, Padang, Indonesia. The map was carried out in every nested grid point of the area and on a large scale (1:5,000). The TUNAMI N3 program was used for the simulation of the tsunami inundation. A tsunami assessment was made through simulations in nine scenarios of fault parameter data for Sipora block earthquakes. The result of the study provides a tsunami inundation map. Furthermore, this tsunami inundation map can be used for communities, local authorities, government, and others for many studies, and decision-makers can come up with mitigation plans for a small study area.

scholarly journals An Evaluation of Tsunami Hazard Modeling in Gunungkidul Coastal Area using UAV Photogrammetry and GIS. Case Study: Drini Coastal Area

2019 ◽  
Vol 125 ◽  
pp. 09005
Author(s):  
Muh Aris Marfai ◽  
Hendy Fatchurohman ◽  
Ahmad Cahyadi
Keyword(s):  
Coastal Area ◽  
High Spatial Resolution ◽  
Low Cost ◽  
Tsunami Hazard ◽  
Hazard Maps ◽  
Tsunami Inundation ◽  
The Government ◽  
Evacuation Routes ◽  
Elements At Risk

In recent years, Tourism activities in Gunungkidul Coastal Area rapidly increased. A large number of tourists visiting the coast considered as elements at risk that are exposed to tsunami hazards. Disaster infrastructures provided by the government e.g. hazard maps, evacuation routes, and locations for assembly points are inadequate. The tsunami inundation models provided by the government are based on national topographic maps (RBI), resulting in inaccurate models. DEM generation using UAV Photogrammetry produces high spatial resolution data that results in more accurate tsunami inundation model. The results of the model using UAV photogrammetry are also capable of producing several inundation scenarios and determine the safe areas that can be used for temporary evacuation sites. The use of UAV photogrammetry for tsunami inundation models provides many advantages including low cost and accurate model results. Evaluation of hazard maps and assembly points using UAV Photogrammetry modeling lead to more effective and less time-consuming on the evacuation process.

TSUNAMI DISASTER REDUCTION EDUCATION USING TOWN WATCHING AND MOVING TSUNAMI EVACUATION ANIMATION — TRIAL IN BANDA ACEH

2010 ◽  
Vol 04 (02) ◽  
pp. 115-126 ◽  
Author(s):  
YOZO GOTO ◽  
YUJIRO OGAWA ◽  
TAKASHI KOMURA
Keyword(s):  
Disaster Mitigation ◽  
Visual Education ◽  
Training Workshop ◽  
Disaster Reduction ◽  
Tsunami Inundation ◽  
Tsunami Disaster ◽  
Bottle Neck ◽  
Disaster Education ◽  
The Town ◽  
Banda Aceh

The reconstruction of Banda Aceh has progressed in these three years and survivors are returning to the areas where they were formerly living. Several refuge buildings are being constructed in the coastal area to ensure safety of the nearby residents. However, people's minds would not be at ease without the confidence that they would obtain safety by taking refuge in the building. The authors studied applicability of two Japan's original disaster education methods for capacity building of community, holding a trainers' training workshop with the cooperation of the Tsunami and Disaster Mitigation Research Center (TDMRC) of Syiah Kuala University. They introduced a visual education using the tsunami inundation and evacuation animation to the teachers, the volunteers, and the students in the area, and executed an exercise of the residents' participation type education using the town watching method. The participants were asked to evaluate these two methods by a questionnaire after the workshop. Most of them evaluated these methods as very effective and easy to use. The results from the questionnaire also showed clearly that the bottle neck in popularizing disaster education was lack of good education materials.

scholarly journals Probabilistic tsunami inundation assessment of Kuroshio Town,Kochi Prefecture, Japan considering the Nankai-Tonankai megathrust rupture scenarios

2020 ◽  
Author(s):  
Katsuichiro Goda ◽  
Tomohiro Yasuda ◽  
Nobuhito Mori ◽  
Ario Muhammad ◽  
Raffaele De Risi ◽  
...  
Keyword(s):  
Tsunami Hazard ◽  
Grid Data ◽  
Seismic Region ◽  
Tsunami Inundation ◽  
Coastal Defense ◽  
Tsunami Risk ◽  
Hazard Assessments ◽  
Tsunami Scenarios ◽  
Management Council ◽  
Kochi Prefecture

Abstract. The Nankai-Tonankai megathrust earthquake and tsunami pose significant risks to coastal communities in western and central Japan. Historically, this seismic region hosted many major earthquakes, and the current national tsunami hazard assessments in Japan consider megathrust events having moment magnitudes between 9.0 and 9.1. In responding to the lack of rigorous uncertainty analysis, this study presents an extensive tsunami hazard assessment for the Nankai-Tonankai Trough events, focusing upon the southwestern Pacific region of Japan. A set of 1,000 kinematic earthquake rupture models is generated via stochastic source modelling approaches, and Monte Carlo tsunami simulations are carried out by considering high-resolution grid data of 10-m and coastal defense structures. Significant advantages of the stochastic tsunami simulation methods include the enhanced capabilities to quantify the uncertainty associated with tsunami hazard assessments and to effectively visualize the results in an integrated manner. The results from the stochastic tsunami simulations can inform regional and local tsunami risk reduction actions in light of inevitable uncertainty associated with such probabilistic tsunami hazard assessments, and complement conventional deterministic tsunami scenarios and their hazard predictions, such as those developed by the Central Disaster Management Council of the Japanese Cabinet Office.

scholarly journals An Interactive Web-Gis Development for Risk Tsunami Hazard Potential Information In Pangandaran Village West Java

2020 ◽  
Vol 3 (1) ◽  
Author(s):  
Juan Andrian ◽  
Arif Ismail ◽  
Iwan Setiawan ◽  
Shafira Himayah
Keyword(s):  
Information System ◽  
Geographic Information System ◽  
Geographic Information ◽  
Tsunami Hazard ◽  
Disaster Mitigation ◽  
Web Gis ◽  
River Networks ◽  
Tsunami Disaster ◽  
Public Facilities ◽  
Lack Of Information

<p class="TableParagraph"><em>In 2006, a tsunami disaster occurred on the coast of Pangandaran Regency which claimed up to 664 fatalities. A large number of people died due to lack of information in knowing areas that are prone to tsunami disasters. Therefore, a geographic information system for the tsunami disaster is needed to facilitate the Pangandaran community to find out areas that are prone to tsunami disasters. In making a geographic information system web tsunami disaster using GeoServer, PostgreSQL and LeafletJS. Making a geographic information system web is done in several ways, namely, entering shapefile data into a database and then displaying it on a map server. The results of creating a web of the tsunami geographic information system contain information on land use, public facilities, hamlet boundaries, road networks, river networks and tsunami disaster mitigation.</em></p>

GIS Based Tsunami Risk Assessment

2021 ◽  
Vol 10 (1) ◽  
pp. 3438-3448
Author(s):  
T.D.C. Pushpakumara ◽  
◽  
Shohan Gamlath ◽  
Keyword(s):  
Sri Lanka ◽  
Volcanic Eruptions ◽  
Tsunami Hazard ◽  
Risk Map ◽  
Tsunami Inundation ◽  
Age Ratio ◽  
Tsunami Risk ◽  
Inundation Map ◽  
Tsunami Model ◽  
2004 Tsunami

Tsunami is a coastal hazard which occur due to undersea earthquakes, Meteorite falls, volcanic eruptions or even nuclear weapon operations. The tsunami hazard which occurred in December 2004 was generated due to an undersea earthquake 400m west of northern Sumatra and it inundated coastal areas of Indonesia, Sri Lanka, Thailand and India. This hazard became one of the worst disasters in the history resulting in over thirty thousand fatalities and over seventy thousand house damage in Sri Lanka. This study is focused towards creation of GIS based Tsunami risk map for Galle city which was badly hit by the 2004 Tsunami. Tsunami vulnerability was assessed using weighted overlay spatial method with input parameters of population density, sex ratio, age ratio, disability ratio and damaged building ratio. Tsunami hazard map was developed based on tsunami inundation map which was published by Coastal research and design, costal conservation and resource management department with assistant from Disaster management centre using the Cornell Multigrid Coupled Tsunami Model (COMCOT). Vulnerable and hazard maps were analysed and incorporated to develop final risk map using GIS tool. Keywords GIS; Tsunami Inundation Map; Tsunami Risk Map; Vulnerability; Disaster

Special Issue on Enhancement of Earthquake and Tsunami Disaster Mitigation Technology in Peru (II)

2014 ◽  
Vol 9 (6) ◽  
pp. 915-915 ◽  
Author(s):  
Fumio Yamazaki ◽  
Carlos Zavala ◽  
Miguel Estrada
Keyword(s):  
Research Output ◽  
Public Awareness ◽  
Disaster Mitigation ◽  
Asia Pacific ◽  
Special Issue ◽  
Joint Research ◽  
Tsunami Disaster ◽  
Project Outcomes ◽  
Joint Research Project ◽  
Tsunami Risk

With the greatest pleasure, we present the second special issue of the Journal of Disaster Research (JDR), entitled Enhancement of Earthquake and Tsunami Disaster Mitigation Technology in Peru. This follows the first special issue on the same theme. These special issues contain 36 articles, 15 in the first and 21 in the second. They summarize research output from the SATREPS Peru project. SATREPS is an international research program sponsored by the Japan Science and Technology Agency (JST) and the Japan International Cooperation Agency (JICA). As a SATREPS project on natural disaster mitigation, our 5-year Peru project began in March 2010 with the purpose of enhancing and implementing earthquake and tsunami disaster-mitigation technology in Peru. The joint research project provides good opportunities for Peruvian and Japanese researchers and engineers to work together exchanging opinions on their common goal of reducing loss from earthquakes and tsunamis. Within the project period, CISMID was designated as a government agency in charge of disaster-mitigation activities. Project outcomes have been introduced in national design codes and in guidelines on earthquake and tsunami risk evaluation in Peru. Our project has drawn great attention among members of Peruvian society. It has attracted hundreds of participants and scores of mass media through public seminars and symposia. We expect the project to be sustained through public awareness and dissemination activities by Peruvian organizations. We hope this special issue will provide useful information to seismic-prone Asia-Pacific countries, especially Latin America. In closing, we sincerely thank the contributors and reviewers who have done so much to make the articles in this special issue both interesting and valuable.

TSUNAMI MITIGATION EFFORTS WITH pTA IN WEST SUMATRA PROVINCE, INDONESIA

2010 ◽  
Vol 04 (04) ◽  
pp. 341-368 ◽  
Author(s):  
ABDUL MUHARI ◽  
FUMIHIKO IMAMURA ◽  
DANNY HILMAN NATAWIDJAJA ◽  
SUBANDONO DIPOSAPTONO ◽  
HAMZAH LATIEF ◽  
...  
Keyword(s):  
Wave Height ◽  
Direct Interaction ◽  
Disaster Mitigation ◽  
Capital City ◽  
Tsunami Disaster ◽  
West Sumatra ◽  
Tsunami Risk ◽  
Tsunami Mitigation ◽  
High Level ◽  
International Experts

This paper describes tsunami disaster mitigation in the West Sumatra region with participatory technology assessment (pTA), which promotes direct interaction among member and experts to discuss issues and reach consensus for mitigation through provision of information and knowledge of science and technology. Two areas were examined: Padang, the capital city; and Painan city, a town in southern West Sumatra Province, Indonesia. Tsunami have damaged these areas at least three times: in 1797, a 5–10-m-high tsunami wave height hit the area; in 1833, a 3–4-m-high tsunami came; and in 2007, an 8.4 Mw earthquake generated a local tsunami with maximum wave height of 1.5 m, as observed near Painan. Because of the high level of tsunami risk resulting from its flat topographic conditions, their respective populations of 820,000 people and 15,000 people are developing tsunami mitigation efforts with support of national institutions and international experts. These cities had different starting points and approaches. Efforts were introduced to produce official tsunami hazards maps. Insights from these lessons and ideas arising from the ongoing process after the 2007 South Sumatra and 2009 Padang earthquakes are discussed herein.

BUSINESS RESTORATION RELATED TO LIFELINE AFTER TSUNAMI DISASTER

2010 ◽  
Vol 04 (02) ◽  
pp. 73-81 ◽  
Author(s):  
YASUKO KUWATA ◽  
SHIRO TAKADA
Keyword(s):  
Indian Ocean ◽  
Tsunami Hazard ◽  
Damage Estimation ◽  
Time Model ◽  
Tsunami Inundation ◽  
Tsunami Disaster ◽  
Proposed Model ◽  
Interview Survey ◽  
Survey Results

This paper proposes a method to evaluate functionality of a business after a tsunami disaster. This method has several modules such as damage estimation of business base (building, equipments, and lifeline) caused by tsunami hazard, restoration ratio-to-time model for business base, and the functionality of the business introduced by facility restoration and its influence to the business. As a case study, the tsunami impact to industries and its subsequent restoration process were studied based on an interview survey in southern Sri Lanka after the 2004 Indian Ocean earthquake and tsunami, and the survey results were applied to the proposed model. Results of application showed that buildings and equipments were slowly restored when they were extensively damaged or flooded. Further, the business restoration depends more heavily on the business facilities restoration than the lifeline restoration, when the business facilities are flooded with tsunami inundation higher than 1 m.

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