阿克陶M_S6.7地震前LURR异常演化特征分析  

STUDY ON TEMPO-SPECIAL EVOLUTION OF LURR ABNORMLITY BEFORE AKETAO EARTHQUAKE

作　　者：尼鲁帕尔.买买吐孙 王海涛[1] 刘月[2] 唐兰兰[1] 魏芸芸[1] 温少妍[1] 阿衣仙姑.买买提 Nilupaer · Maimaitusun WANG Hai-tao LIU Yue TANG Lan-lan WEI Yun-yun WEN Shao-yan Ayixiangu · Maimaiti(Earthquake Administration of Xinjiang Uygur Autonomous Region, Urumqi 830011 ,Xinjiang, China Institute of Earthquake Science, China Earthquake Administration,Beijing 100036, China Kashi station of Earthquake Administration of Earthquake Administralion of Xinjiang Uygur Autonomous Region Kashi 840000, Xinjiang, China)

机构地区：[1]新疆维吾尔自治区地震局,新疆乌鲁木齐830011 [2]中国地震局地震预测研究所,北京100036 [3]新疆维吾尔自治区地震局喀什基准地震台,新疆喀什840000

出　　处：《内陆地震》2017年第2期138-144,共7页Inland Earthquake

基　　金：新疆地震科学基金课题(201602)

摘　　要：加卸载响应比理论是描述震源区介质损伤程度的一种地震预测方法。基于加卸载响应比理论,对2016年11月25日阿克陶M_S6.7地震前加卸载响应比时空演化特征和异常区的孕震积分时程曲线进行分析。结果表明,本次地震前,研究区出现了多个加卸载响应比高值区域,异常区呈现为环状或片状,随着地震孕育过程,异常区往震源附近迁移,发震地点在异常区边缘和内部,地震发生在异常高值减弱过程中,异常峰值到发震时间为1个月,远小于理论发震时间,这表明了研究区构造活动剧烈,孕震周期短的特征。The load/unload response ratio （LURR） theory is a method for predicting earthquakes by characterizing the extent of damage in the focal area. Based on the load/unload response ratio theory, the spatial-temporal evolution characteristics of LURR abnormality before the Aketao earthquake with Ms6.7 occurred on November 25th, 2016 were analyzed, and seismogenic integral of abnormal area was analyzed. The results showed that there were many LURR abnormal areas in study area before Aketao earthquake with Ms6.7, and anomaly area was annular or flaky. Before incoming earthquake, anomaly zone migrated to vicinity of source, in process of abnormal high value weakening, the peak value to earthquake occurrence time was one month, which was far less than theoretical occurrence time. This showed that tectonic activity in study area was intense, and seismogenic preparation period was short.

关 键 词：阿克陶Ms6.7地震 加卸载响应比 时空演化 孕震积分 

分 类 号：P315.7[天文地球—地震学]