地震学报（英文版）2008，Vol.21Issue(1)：11-23,13.
Frequency-domain array technique analysis for the rupture duration time and geometrical characteristics of the 2001 Kunlun Mountain Pass earthquake
Frequency-domain array technique analysis for the rupture duration time and geometrical characteristics of the 2001 Kunlun Mountain Pass earthquake
摘要
Abstract
In this paper, we briefly describe the principle of tracking energy radiation sources of large earthquakes using frequency-domain far-field array technique, present general steps of tracking energy radiation sources, and take the 2001 Kunlun Mountain Pass earthquake as an example to analyze key factors for setting parameters while processing data. Using broadband waveform data from a seismic array in Ethiopia and Kenya (EK Array), we obtain that the rapture initiation point of the 2001 Kunlun Mountain Pass earthquake is located in the east of Buka Daban Peak (35.92°N, 91.70°E), and the rupture duration time is less than 160 s, the rupture length about 520 km, with 180 km in the west of the initiation point and 340 km in the east, respectively. The western segment of the earthquake fault bends towards southwest near Buka Daban Peak, which is in concordance with the surface rupture trace. The eastern segment apparently bends towards northeast near Xidatan, which is in agreement with the strike of Xidatan fault, but 30 km away from Xidatan fault. In addition, the results imply that the western segment of the earthquake fault appears erect while the eastern segment appears to be gradually dipping southwards.关键词
frequency-domain array technique/2001 Kunlun Mountain Pass earthquake/energy radiation sourcesKey words
frequency-domain array technique/2001 Kunlun Mountain Pass earthquake/energy radiation sources分类
天文与地球科学引用本文复制引用
ZHANG Hong-xia,XU Li-sheng,CHEN Yun-tai,LI Chun-lai,Klaus Stammler..Frequency-domain array technique analysis for the rupture duration time and geometrical characteristics of the 2001 Kunlun Mountain Pass earthquake[J].地震学报（英文版）,2008,21(1):11-23,13.基金项目
973 Program of Ministry of Science (2004CB418404-4), the National Natural Science Foundation of China (40474018) and the International Cooperation Program of Ministry of Science (2004DFA06000). （2004CB418404-4）
