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Tsunami Risk Assessment in West Sumatera Provice, Case Study of Pariaman District

Tsunami Risk Assessment in West Sumatera Provice, Case Study of Pariaman District

West Sumatra is one of the highest incidences of earthquakes, both on land and undersea earthquakes. This is because the region is lying on the subduction zone of the Indo-Australian Plate and Eurasian Plate. The high rate of seismicity, in particularly occurring beneath the sea can trigger another disaster sucah as tsunami.

 

Recent tsunami event in the region occurred on October 25, 2010 at 21:42 pm, triggered by an earthquake with magnitude moment of 7.7 with epicenter located at 3.484 °S, 100.114° E and strucked the Mentawai Islands in particular the island of North Pagai and South Pagai. This disaster claimed the lives of 456 people.

 

To determine the potential tsunami hazards that hit the coast of West Sumatra in particular Pariaman District then performed repeated tsunami reconstruction in 1797 (Mw = 8.6) and 1833 (Mw = 8.9) by using mathematical modeling of tsunami generation models posed by the earthquake and tsunami propagation model. The results obtained in the form of high tsunami and tsunami arrival time at the beach with a coverage area of the west coast of West Sumatra Province.

 

Study of physical and social vulnerability (vulnerability aggregate) are conducted in all regions of West Sumatra province, which is then used to assess the risk level of the earthquake and tsunami in West Sumatra Province with a unit of study at the district /city.
Further more detailed studies conducted in the district of Pariaman by reviewing the level of vulnerability and risk to the tsunami. The results obtained are then used for tsunami disaster mitigation measure, either by hard and soft measures such as the planning of coastal areas in the form of population transfer from the coastline, planting trees and evacuation routes for communities against tsunami hazards.

 

LIST OF RESEARCH OUTPUT 
Part of this resarch will be used in spatial planning of coastal areas in West Sumatra, especially in the District Pariaman by the Directorate of Coastal and Small Islands, Ministry of Fisheries and Marine Affairs. (CSI, MFMA).

 

HEAD OF RESEARCH TEAM: Dr. Eng. Hamzah Latief
TEAM MEMBERS: Dr. Danny Hilman Natawidjaja; Dr. Subandono Diposaptono; Haris Sunendar; Edi Riawan, Ssi; Ignatius Ryan Pranantyo
OFFICIAL ADDRESS : Oceanography Study Program, Faculty of Earth Sciences and Technology, Labtek XI, lt. 1, Jalan Ganesha 10, Bandung
EMAIL : hamzah@geoph.itb.ac.id