地震前断层蠕动与地温异常的探讨
A STUDY ON PRESEISMIC FAULT CREEP AND GROUND TEMPRATURE ANOMALY
-
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.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.
-
-
[1] Tocher, D., Creep on the San Andreas fault——creep rate and related measurement at Vineyard, California, Bull. Seismo. Sac. Amer. 50, 396——404, 1960.
[2] Scholz, C. H., P. Molnar and T. Johnson, Detailed studies of frictional sliding of granite and implications for the earthquake mechanism, J. Geophys. Res. 77, 6392——6406, 1972.
[3] B yerlee,J. D. and M. Wyss, Rock friction and earthquake prediction, Birkhauser Verlag Basel, 773——789,1978.
[4] Dieterich, J. H., Preseismic fault slip and earthquake prediction, J. Geophys. Res. 83, 3940——3948, 1978.
[5] Byerlee, J. D. and M. Wyss, Rock friction and earthquake prediction, Birkhauser Verlag Basel, 717——731,1978.
[6] 冯学才,我国大地震前地下水异常特征及其物理机制,地震地质,4, 35——48, 1982,
[7] 冯德益,长周期形变波及其所反映的短期和临震前兆,地震学报,6, 41——45, 1984,
[8] 马宗晋、付征祥、张郑珍、汪成民、张国民、刘德富,1966——1976年中国九大地震,地震出版社,124,1982,
[9] Byerlee, J. D. and M. Wyss, Rock friction and earthquake prediction, Birkhauser Verlag Basel, 586——602,1978.
[10] Lachenbruck, A. H., and J. H. Sass, Heat flow and energetics of the san Andreass fault zone, J. Geophys.Res, 85, 6185——6222, 1980.
[11] Lachenbruck, A. H., Frictional heating, fluid pressure and the resistance to fault motion, J. Geophys. Res.,85, 6097——6112, 1980.
[12] 俞昌铭,热传导及其数值分析,清华大学出版社,1981,
[13] 陈非比、张建华、刘秉良、商宏宽,唐山地震,地震出版社,130, 1979,
[14] 国家地震局《1976年唐山地震》编辑组,1976年唐山地震,地震出版社,194, 1982,
[15] 李兴才,唐山地震前的断层滑动及有关的倾斜和水位变化,地震学报,5, 73——77, 1983,
[16] 陈运泰、黄立人、林邦慧、刘妙龙、王新华,用大地测量资料反演的1976年唐山地震的位错模式,地球物理学报,23, 201——216, 1978,
[17] 张黔珍,唐山地震前地壳的异常隆起及无震蠕动,地震学报,3, 11——22, 1981,
[18] 国家地震局《1976年唐山地震》编辑组,1976年唐山地震,地震出版社,94, 1982,
[19] 王仁,孙荀英,蔡永恩,华北地区近700年地震序列的数学模拟,中国科学,B辑,8:745——753, 1982.
[20] 王仁、丁中一、殷有泉,固体力学基础,地质出版社,39, 1979.[1] Tocher, D., Creep on the San Andreas fault——creep rate and related measurement at Vineyard, California, Bull. Seismo. Sac. Amer. 50, 396——404, 1960.
[2] Scholz, C. H., P. Molnar and T. Johnson, Detailed studies of frictional sliding of granite and implications for the earthquake mechanism, J. Geophys. Res. 77, 6392——6406, 1972.
[3] B yerlee,J. D. and M. Wyss, Rock friction and earthquake prediction, Birkhauser Verlag Basel, 773——789,1978.
[4] Dieterich, J. H., Preseismic fault slip and earthquake prediction, J. Geophys. Res. 83, 3940——3948, 1978.
[5] Byerlee, J. D. and M. Wyss, Rock friction and earthquake prediction, Birkhauser Verlag Basel, 717——731,1978.
[6] 冯学才,我国大地震前地下水异常特征及其物理机制,地震地质,4, 35——48, 1982,
[7] 冯德益,长周期形变波及其所反映的短期和临震前兆,地震学报,6, 41——45, 1984,
[8] 马宗晋、付征祥、张郑珍、汪成民、张国民、刘德富,1966——1976年中国九大地震,地震出版社,124,1982,
[9] Byerlee, J. D. and M. Wyss, Rock friction and earthquake prediction, Birkhauser Verlag Basel, 586——602,1978.
[10] Lachenbruck, A. H., and J. H. Sass, Heat flow and energetics of the san Andreass fault zone, J. Geophys.Res, 85, 6185——6222, 1980.
[11] Lachenbruck, A. H., Frictional heating, fluid pressure and the resistance to fault motion, J. Geophys. Res.,85, 6097——6112, 1980.
[12] 俞昌铭,热传导及其数值分析,清华大学出版社,1981,
[13] 陈非比、张建华、刘秉良、商宏宽,唐山地震,地震出版社,130, 1979,
[14] 国家地震局《1976年唐山地震》编辑组,1976年唐山地震,地震出版社,194, 1982,
[15] 李兴才,唐山地震前的断层滑动及有关的倾斜和水位变化,地震学报,5, 73——77, 1983,
[16] 陈运泰、黄立人、林邦慧、刘妙龙、王新华,用大地测量资料反演的1976年唐山地震的位错模式,地球物理学报,23, 201——216, 1978,
[17] 张黔珍,唐山地震前地壳的异常隆起及无震蠕动,地震学报,3, 11——22, 1981,
[18] 国家地震局《1976年唐山地震》编辑组,1976年唐山地震,地震出版社,94, 1982,
[19] 王仁,孙荀英,蔡永恩,华北地区近700年地震序列的数学模拟,中国科学,B辑,8:745——753, 1982.
[20] 王仁、丁中一、殷有泉,固体力学基础,地质出版社,39, 1979.
计量
- 文章访问数: 1047
- HTML全文浏览量: 29
- PDF下载量: 104
下载:
