摘要
通过对2007年6月3日宁洱Ms6.4、Ms5.1两次地震的强震动台站观测记录的谱分析,估算了两次地震的辐射能量、地震矩、矩震级等震源参数。结果表明,虽然对拐角频率、应力降等参数各台站的估算结果离散性较大,效果不甚理想,但利用近场强震动观测记录,可以对地震辐射能量、地震矩、矩震级3个参数作出较好的估计。
From the spectrum analysis on strong motion recordings of 3, June, 2007 Ninger Ms6.4, Ms5. 1 earthquakes from some stations, this paper estimates the source parameters of two earthquake such as seismic radiated energies, seismic moments, moment magnitude and so on. The results show although the estimates of corner frequency, stress drop and so on in different stations vary widely, it is good to estimate seismic energies, seismic moment and moment magnitude.
出处
《地震研究》
CSCD
北大核心
2009年第B12期443-448,共6页
Journal of Seismological Research
基金
地震行业科研专项(200808061)和《云南省中青年学术技术带头人后备人才培养计划》(2004PY01-26)联合资助.
关键词
宁洱地震
强震动记录
傅氏位移谱
震源参数
Ninger Earthquake, Strong Motion Recordings, Fourier Spectrum, Seismic Source Parameters