摘要
20 0 1年云南省共有 7个地区发生了MS≥ 5 0级的中强地震 ,其中 5≤MS≤ 6级地震达 9次之多。本文利用昆明区域数字化地震台网记录的云南 7个地区中强地震序列的 76 5个地震波形资料 ,应用Brune模式给出了7个地震序列震源参数结果 ,并讨论了各序列震源参数和地方震级的关系 ,拐角频率与应力降的时空强分布。
Totally,the M S≥5.0 Moderate-strong earthquakes occured within 7 areas in 2001,among them 5.0≤M S≤6.0 earthquakes were as many as 9.765 waveform data for the moderate-strong earthquakes within 7 areas in Yunnan recorded by Kunming Regional Digital Network are used in this paper.The source parameters for 7 earthquake sequences have been given using Brune model.The relationship of time-space distribution between corner frequency and stress drop,source parameters for each sequence and local magnitude is also discussed.The evolutive tendency for each sequence is discussed from the view of structure and stress drop.
出处
《地震研究》
CSCD
北大核心
2002年第2期115-123,共9页
Journal of Seismological Research
基金
云南省科技厅重大项目资助课题"云南强震中短期预测技术研究" ( 2 0 0 1NG46 )
