Post-2004 mega-earthquake temporal velocity variation at Andaman Islands from GPS measurements

被引：0
作者：
S. K. Som
Ashim Kumar Saha
Vijay Shivgotra
机构：
[1] Geological Survey of India,Earthquake Geology Division
[2] North Eastern Region,undefined
[3] SU: Maharashtra,undefined
[4] Geological Survey of India,undefined
[5] Seminary Hills,undefined
[6] Geological Survey of India,undefined
[7] Northern Region,undefined
来源：
Natural Hazards | 2014年 / 72卷
关键词：
Andaman; GPS; Velocity;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
Post-mega-earthquake velocity adjustment at Andaman region was found to vary with time. Coordinate repeatability for 5-year span shows changeover from post-seismic to inter-seismic period in between 900 and 1,000 days from the mega-earthquake. Excluding Havlock Island, all sites move from south to north and from east to west. Velocity vectors gradually rotated from the nearly perpendicular orientation after the mega-earthquake to parallel orientation with the subduction interface in later phase. Velocities in India 2005 reference frame indicate the presence of a structural discontinuity between Bedonabad and Chidiatapu at south Andaman, between Padmanavapuram and Kaushalyanagar at middle Andaman and between Aerial Bay and Radhanagar at north Andaman.
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页码：1051 / 1062
页数：11
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