收稿日期: 2004-07-15
修回日期: 2004-10-12
网络出版日期: 2005-05-15
Scaling of Reduced Energy for Deep-Focus Earthquakes and its Apparent Depth Dependence
Received date: 2004-07-15
Revised date: 2004-10-12
Online published: 2005-05-15
Supported by
supported by National Natural Science Foundation of China(40274013)
吴忠良 . 深源地震折合能量的标度性及其与深度的关系[J]. 中国科学院大学学报, 2005 , 22(3) : 279 -285 . DOI: 10.7523/j.issn.2095-6134.2005.3.004
The ratio of radiated energy over seismic moment, or the so called reduced energy, is studied for global deep-focus earthquakes deeper than 70km using the scalar seismic moment in the Harvard CMT catalogue and the radiated energy estimated by NEIL from January 1987 to December 2001. The scaling of reduced energy versus seismic moment is obtained for different depth ranges, respectively. It is olxerved that for earthquakes with depths between 70km and 400km, reduced energy decreases with seismic moment,while for earthquakes with depths beyond 400km, reduced energy increases with seismic moment. This characteristic is apparently different from that of shallow earthquakes.
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