| 门源地倾斜异常的深入分析 |
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| 引用本文： | 苏旭,马文静.门源地倾斜异常的深入分析[J].高原地震,1996(4). |
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| 作者姓名： | 苏旭 马文静 |
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| 作者单位： | 青海省地震局 |
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| 摘 要： | 应用形态法、差分法、契氏拟合法对１９８４—１９９５年门源倾斜的资料做了系统的分析、总结，对其２００ｋｍ范围内的中强地震的震前异常进行了分析，发现在１９８６年门源６．４级、１９９０年共和７．０级地震前趋势性异常比较显著，且异常幅度大、持续时间长，而在一些５级左右地震前异常不明显。并且发现在中强地震前门源倾斜ＮＳ向有一个减速过程，这似与以往总结的震例有所区别。并在此基础上对门源倾斜的映震能力作了评价，且提出了未来一个时期的地震趋势。
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| 关 键 词： | 形态法，差分法，契氏拟合法，趋势异常，异常幅度，异常持续时间，映震能力 |
STUDY ON ANOMALIES OF MENYUAN GROUND TILT |
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| Su Xu,Ma Wenjing.STUDY ON ANOMALIES OF MENYUAN GROUND TILT[J].Plateau Earthquake Research,1996(4). |
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| Authors: | Su Xu Ma Wenjing |
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| Abstract: | By using morphologic method, differential method and Qi's fitting method, the authors analyse and summarize the ground tilt data of Menyuan areafrom 1984 to 1995, especially analyse the pre-earthquake anomalies of moderate-strong earthquakes within 200km area.The results show that there are some abvious trend anomalies of large anomalous amplitude and long duration time before Menyuan earthquake with Ms 6.4 in 1986 and Gonghe earthquake with Ms 7.0 in 1990. But the anomalies are not obvious before the earthquakes with Ms 5.0. A process of retarded velocity is also found before moderate-strong earthquakes which is different from other events. Based on above, the authors estimate the reflecting earthquake ability of Menyuan ground tilt and put forward the earthquake trend in the coming future. |
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| Keywords: | Morphologic method Differential method Qi 's fitting method Trend anomaly Anomalous amplitude Anomaly duration time Reflecting earthquake ability |
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