Long aseismic slip duration of the 2006 Java tsunami earthquake based on GPS data

作者：Rio Raharja,Endra Gunawan,Irwan Meilano,Hasanuddin Z. Abidin,Joni Efendi

摘要：The Java earthquake occurred on July 17,2006 with magnitude 7.8 associated to the subduction process of Indo-Australian plate and Sundaland block off southwestern coast of Java. We present postseismic deformation parameters of the 2006 Java earthquake analyzed using campaign GPS observation from 2006 to 2008 and continuous observation from 2007 to 2014. We use an analytical approach of logarithmic and exponential functions to model these GPS data. We find that the decay time in the order of hundreds of days after the mainshock as observed by 8 years' data after the mainshock for magnitude 7 earthquake is longer than a general megathrust earthquake event. Our findings suggest that the 2006 Java earthquake which is considered as ‘‘tsunami earthquake'' most probably occurred in the region that has low rigidity and tends to continuously slip for long time periods.

发文机构：Geodesy and Geomatics Engineering Graduate Research on Earthquake and Active Tectonics Geospatial Information Agency of Indonesia

关键词：海啸地震JAVAGPS数据时间比无震滑动GPS观测西南海岸巽他大陆2006 Java earthquakeAseismic slipGPS Time series

分类号： P315[天文地球—地震学][天文地球—固体地球物理学][天文地球—地球物理学]TP312[自动化与计算机技术—计算机软件与理论][自动化与计算机技术—计算机科学与技术]