| 地震前断层蠕动与地温异常的探讨 |
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| 引用本文： | 蔡永恩,殷有泉,王仁.地震前断层蠕动与地温异常的探讨[J].地震学报,1987,9(2):167-175. |
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| 作者姓名： | 蔡永恩 殷有泉 王仁 |
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| 作者单位： | 1. 北京大学地质系
2. 北京大学力学系 |
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| 摘 要： | 本文利用震前断层蠕动模型(不考虑水的作用),对唐山地震前出现的地温异常做了探讨,提出地温异常的一个可能原因是震前断层的加速蠕动.经过反复调试,一个较好的模拟结果是:由加速蠕动产生的唐山相对玉田的表层温度累计变化是2.5℃,此值与观测数据相同,震前加速蠕动的最大速率是12.1cm/d.结果表明,有可能利用地温变化研究断层的震前加速蠕动和地震预报.
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A STUDY ON PRESEISMIC FAULT CREEP AND GROUND TEMPRATURE ANOMALY |
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| Affiliation: | 1. Department of Geology, Peking University;
2. Department of Mechanics, Peking University |
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| Abstract: | A preseismic fault creep model (without considering the effect of underground water) is applied to study the observed ground temperature anomaly before the Tangshan earthquake. We suggest that a possible cause of the anomaly is the accelerating creep of the fault. After many trial computations, the more reasonable result obtained is:displacement rate caused by the preseismic fault creep is 12.1 cm/day, while the accumulated maximum difference of ground temperature between Tangshan and Yutian reaches the observed value of 2.5℃. Our investigation shows that it is possible to apply temperature anomaly in the study of preseismic creep and earthquake prediction. |
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