【摘要】 数字化形变资料由于采样率的大幅度提高,丰富了潮汐观测的震前变化信息,使研究震前短临的异常信息成为可能。通过对2001年10月27日永胜6.0级地震以及2001年11月14日昆仑山口西8.1级地震前后若干倾斜、重力数字化观测的结果进行计算分析,初步获得了两次地震前形变异常的阈值及临震异常特征图像。对临近地震前形变异常时间、空间上的特征进行总结。依据固体潮汐观测模型计算潮汐、非潮汐参数与日异常频次、日差分异常频次,将各参数综合考虑,有可能对未来发震的时间及地点给出预估计。更多还原

【Abstract】 The increment of sampling rate in the digital deformation observations provides us a possibility to detect and study the imminent and shortterm anomaly characteristics prior to some earthquakes. In this paper, we calculated and analyzed anomaly temporalspatial characteristics of tilt and gravity observation by the digital technology before the Yongsheng MS 6.0 earthquake, 27 Oct. 2001 and Kunlunshan MS 8.1, 14 Nov. 2001, and have obtained the thresholds for anomaly identification and anomaly images prior to these earthquakes. The results demonstrated that the tidal and nontidal parameters and daily anomaly frequency might be possible to estimate the occurrence time and location for the future earthquakes.更多还原