全球强震的分布及其与地球自转速率变化的关系  

Distribution Characteristics of Global Significant Earthquakes and Possible Connection Between Earthquakes and Earth's Variable Rotation Rate

作　　者：马利华[1] 韩延本[1] 尹志强[1] 

机构地区：[1]中国科学院国家天文台,北京100012

出　　处：《天文研究与技术》2007年第4期406-411,共6页Astronomical Research & Technology

基　　金：国家自然科学基金资助项目(10373017)

摘　　要：结合文作者给出的全球地震目录，重点考察1832～1994年间全球强震（Ms≥7．5）的分布特征，并初步探讨了全球强震与地球自转速率变化的可能关联。结果表明，1832年以来的全球强震分布与现代的地震观测结果比较一致，这些强震主要集中在环太平洋和地中海一喜马拉雅两大地震带，地球自转速率变化与全球强震的频次存在较为密切的联系。Based on global earthquake catalog released from Paula K. Dunbar et al., the authors investigate distribution characteristics of global significant earthquakes （Ms ≥ 7.5） during 1832 - 1994, and discuss possible connection between global earthquakes and Earth＇s variable rotation rate. It is shown that spatial distribution characteristics of earthquakes in this catalog are similar to modem observations, mainly locating in circum- Pacific and Mediterranean - Himalayan seismic belt, and Earth variable rotation rate is highly related to the number of global great Earthquakes.

关 键 词：全球地震 空间分布 地球自转变化 

分 类 号：P183.5[天文地球—天文学]