| 甘肃及其邻区中强震前地震波速度异常 |
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| 引用本文： | 顾瑾平.甘肃及其邻区中强震前地震波速度异常[J].西北地震学报,1984,6(1):77-83. |
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| 作者姓名： | 顾瑾平 |
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| 作者单位： | 兰州地震研究所 |
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| 摘 要： | 本文收集了若干甘肃及邻区中强震前地震波速度比异常的资料,並初步总结了该区1970年至1983年发生的中强震前地震波速度异常的时空特性。也讨论了该区和其它地区地震波速度比异常特性的区别。十几年的工作表明,V_S/V_P观测资料应用到该区的地震预报中是有可能的。最后,简单地讨论了速度异常研究中的一些问题。
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SEISMIC VELOCITY RATIO ANOMALIES BEFORE SOME STRONG AND MODERATE EARTHQUAKES IN PROVINCE GANSU AND ITS VICINITY |
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| Gu Jin-ping.SEISMIC VELOCITY RATIO ANOMALIES BEFORE SOME STRONG AND MODERATE EARTHQUAKES IN PROVINCE GANSU AND ITS VICINITY[J].Northwestern Seismological Journal,1984,6(1):77-83. |
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| Authors: | Gu Jin-ping |
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| Institution: | Lanzhou Seismological Institute |
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| Abstract: | For the last 10 years Chinese seismologists have been studying the seismic velocity ratio anomalies before and after a series of strong and moderate earthquakes (Feng, D. et al., 1974; Feng, D., 1975; Feng, D. et al., 1978) Since many seismologists hold different viewpoints on using premonitory seismic velocity variations as earthquake precursors,we must continuously make detailed studies of the different characteristics of the seismic velocity anomalies in different region.In this paper, we collected data for the VP/VS anomalies before and after some earthquakes occurred in Province Gansu and its vicinity with magnitude about 4 and >4 during the period 1970-1983.We have investigated and discussed some general temporal and spatial characteristics of VP/VS anomalies; namely, the time-dependent characteristics of VP/VS variations, and the spatial characteristics of regions concerning the future strong or moderate earthquakes. |
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