【摘要】 选取了喀什数字地震台记录的喀什及周边地区地震的宽频带波形资料,分析处理了2001～2005年MS3.5以上地震164次,通过数字地震波谱计算了标量地震矩和地震辐射能量,从而进行了视应力的计算。给出了巴楚-伽师MS6.8和乌什MS6.3强震前后视应力的时序变化情况,发现其视应力均表现出震前低应力阶段-主震前的逐渐上升-震后逐渐恢复的动态变化过程,即地震的孕震-发震-震后调整的阶段性变化特征。这一结果可为喀什及周边地区今后进行地震预测预报研究提供参考依据,对该区开展数字地震方面的研究也有所帮助。更多还原

【Abstract】 In this paper,using the wide-band digital seismic waveform data of earthquake occurred in kash and adjacent area,which selected from the data recorded at Kashi Digital Seismic Station,we analyzed and processed 164 earthquakes of MS > 3.5 during 2001 to 2005.With the wave spectra of earthquakes,the scale seismic moment and seismic radiant energy are calculated and further the apparent stress are calculated.The temporal variation of the apparent stress before and after the two strong earthquakes,Bachu-Jiashi of MS 6.8 and Wushi of MS 6.3,are obtained.The dynamic variation processes of apparent stress,which presented as a low stress stage before the earthquake,then stress increasing gradually near main shock and stress recovering after earthquake,are found.It shows a staggered variation characteristic of the process of earthquake gestation,occurrence,and adjustment.The results provide the reference information for the earthquake forecasting in kashi and its adjacent area.It will also be helpful for the digital seismic research in the area.更多还原