Spatiotemporal characteristics of the energy radiation sources of the three great earthquakes near Sumatra Island in September 2007 |
| |
基金项目: | Supported by the National Natural Science Foundation of China (Grant No. 40474018), the National Basic Research Project (Grant No. 2004CB418404-4), the Serious Ocean Disaster Early Warning and Emergency Technique Research (Grant No. 2006BAC03B02) and the Seismic Joint Foundation (Grant Nos. A07047 and 106018), and the Basic R&D Project of Institute of Geophysics, China Earthquake Administration (Grant No. DQJB07B08) |
| |
摘 要: | Three strong earthquakes with magnitudes of Mw 8.4, Mw 7.9 and Mw 7.0 occurred in the sea west of Sumatra Island on September 12 and 13, 2007. We relocated the epicenters and focal depths of the three events by means of the reversal-time imaging technique using broadband digital seismic data from worldwide stations ranging from 30° to 90°, imaged the spatiotemporal variation of the energy radiation sources by means of the nonplane wave array technique using the broadband digital seismic data from a generalized array made up of 33 stations of the Capital Region Digital Seismograph Network (CRDSN), and obtained the rupture duration times, extents and rupture velocities. Also, we discussed the correlations between the locations of the energy radiation sources of the three events.
|
关 键 词: | 苏门答腊岛 地震 能量辐射源 测量技术 |
收稿时间: | 2008-04-10 |
修稿时间: | 2008-06-03 |
Spatiotemporal characteristics of the energy radiation sources of the three great earthquakes near Sumatra Island in September 2007 |
| |
Authors: | LiSheng Xu HaiLin Du HongXia Zhang Yong Zhang ChunLai Li Hua Zhao |
| |
Institution: | (1) Institute of Geophysics, China Earthquake Administration, Beijing, 100081, China;(2) Geophysics Department of Peking University, Beijing, 100871, China |
| |
Abstract: | Three strong earthquakes with magnitudes of M
W 8.4, M
W 7.9 and M
W 7.0 occurred in the sea west of Sumatra Island on September 12 and 13, 2007. We relocated the epicenters and focal depths
of the three events by means of the reversal-time imaging technique using broadband digital seismic data from worldwide stations
ranging from 30° to 90°, imaged the spatiotemporal variation of the energy radiation sources by means of the nonplane wave
array technique using the broadband digital seismic data from a generalized array made up of 33 stations of the Capital Region
Digital Seismograph Network (CRDSN), and obtained the rupture duration times, extents and rupture velocities. Also, we discussed
the correlations between the locations of the energy radiation sources of the three events.
Supported by the National Natural Science Foundation of China (Grant No. 40474018), the National Basic Research Project (Grant
No. 2004CB418404-4), the Serious Ocean Disaster Early Warning and Emergency Technique Research (Grant No. 2006BAC03B02) and
the Seismic Joint Foundation (Grant Nos. A07047 and 106018), and the Basic R&D Project of Institute of Geophysics, China Earthquake
Administration (Grant No. DQJB07B08) |
| |
Keywords: | Sumatra earthquakes reversal-time imaging technique non-plane wave array technique energy radiation sources |
本文献已被 维普 SpringerLink 等数据库收录! |
| 点击此处可从《中国科学通报(英文版)》浏览原始摘要信息 |
| 点击此处可从《中国科学通报(英文版)》下载免费的PDF全文 |