Analysis of 2012 M8.6 Indian Ocean earthquake coseismic slip model based on GPS data

Putra Maulida*, Irwan Meilano, Endra Gunawan, Joni Efendi

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

1 Citation (Scopus)

Abstract

The CGPS (Continuous Global Position System) data of Sumatran GPS Array (CGPS) and Indonesian Geospatial Agency (BIG) in Sumatra are processed to estimate the best fit coseismic model of 2012 M8.6 Indian Ocean earthquake. For GPS data processing, we used the GPS Analysis at Massachusetts Institute of Technology (GAMIT) 10.5 software and Global Kalman Filter (GLOBK) to generate position time series of each GPS stations and estimate the coseismic offset due to the Earthquake. The result from GPS processing indicates that the earthquake caused displacement northeast ward up to 25 cm in northern Sumatra. Results also show subsidence at the northern Sumatran while the central part of Sumatra show northwest direction displacement, but we cannot find whether the subsidence or the uplift signal associated to the earthquake due to the vertical data quality. Based on the GPS coseismic data, we evaluate the coseismic slip model of Indian Ocean Earthquake produced by previous study [1], [2], [3]. We calculated coseismic displacement using half-space with earthquake slip model input and compare it with the displacement produced form GPS data.

Original languageEnglish
Title of host publication5th International Symposium on Earthhazard and Disaster Mitigation
Subtitle of host publicationThe Annual Symposium on Earthquake and Related Geohazard Research for Disaster Risk Reduction
EditorsIrwan Meilano, Zulfakriza
PublisherAmerican Institute of Physics Inc.
ISBN (Electronic)9780735413771
DOIs
Publication statusPublished - 6 May 2016
Externally publishedYes
Event5th International Symposium on Earthhazard and Disaster Mitigation 2015, ISEDM 2015 - Bandung, Indonesia
Duration: 19 Oct 201520 Oct 2015

Publication series

NameAIP Conference Proceedings
Volume1730
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Conference

Conference5th International Symposium on Earthhazard and Disaster Mitigation 2015, ISEDM 2015
Country/TerritoryIndonesia
CityBandung
Period19/10/1520/10/15

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