Application of Load/Unload Response Ratio in the Study of Seismicity in the Region of Iran  

作　　者：Zhang Langping Yin Xiangchu Liang Naigang 

机构地区：[1]State Key Laboratory of Non-linear Mechanics, Institute of Mechanics, CAS, Beijing 100080, China [2]Institute of Earthquake Science, China Earthquake Administration, Beijing 100036, China

出　　处：《Earthquake Research in China》2007年第2期147-155,共9页中国地震研究（英文版）

基　　金：This project was sponsored by the National Natural Science Foundation of China ( Grant No.10232050 , No.10572140);the State "973"Programme of China(2002CB412706)

摘　　要：The variation of Load/Unload Response Ratio (LURR) against time for earthquakes in Kerman Province, Iran, on February 22, 2005, M6.4 and in Lorestan Province, Iran, on March 31, 2006, M6.1, has been calculated and analysed in this paper. The tempo-spatial scanning of LURR in the region of Iran during January 1, 2003 to March 31, 2006 has been conducted, with 1 year as a time-window, 1 month as a time-step, and the comparison of the LURR anomalous regions in 2004 with the actual earthquakes with M≥5.0 in the next year (2005) is also given, which shows that 11 earthquakes with M≥5.0 occurred in LURR anomalous regions while 12 earthquakes with M≥5.0 in LURR regions in 2005. Furthermore, the seismicity in this region is studied by investigating the evolvement of the anomalous LURR regions.The variation of Load/Unload Response Ratio （LURR） against time for earthquakes in Kerman Province, Iran, on February 22, 2005, M6.4 and in Lorestan Province, Iran, on March 31, 2006, M6.1, has been calculated and analysed in this paper. The tempo-spatial scanning of LURR in the region of Iran during January 1, 2003 to March 31, 2006 has been conducted, with 1 year as a time-window, 1 month as a time-step, and the comparison of the LURR anomalous regions in 2004 with the actual earthquakes with M ≥ 5.0 in the next year （2005） is also given, which shows that 11 earthquakes with M ≥ 5.0 occurred in LURR anomalous regions while 12 earthquakes with M ≥ 5.0 in LURR regions in 2005. Furthermore, the seismicity in this region is studied by investigating the evolvement of the anomalous LURR regions.

关 键 词：Load-Unload Response Ratio （LURR） Tempo-spatial scanning The region of Iran SEISMICITY 

分 类 号：P315[天文地球—地震学]