| Short-term precursor of the geomagnetic horizontal field transfer functions |
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| 引用本文： | 龚绍京,田真丽,戚成柱,何淑敏,阎晓梅,陈化然,栗连第. Short-term precursor of the geomagnetic horizontal field transfer functions[J]. 地震学报(英文版), 2001, 14(3): 293-302. DOI: 10.1007/s11589-001-0007-5 |
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| 作者姓名： | 龚绍京 田真丽 戚成柱 何淑敏 阎晓梅 陈化然 栗连第 |
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| 作者单位： | GONG Shao-jing TIAN Zhen-li QI Cheng-zhu HE Shu-min YAN Xiao-mei CHEN Hua-ran LI Lian-di Seismological Bureau of Tianjin，Tianjin 300201，China |
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| 基金项目： | Chinese Joint Seismological Science Foundation. |
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| 摘 要： | IntroductionThe history of studying the changes in deep geoelectric conductivity of an earthquake preparation using the parameters of geomagnetic short-period variations has been about 30 years. At first, Japanese calculated the real transfer functions as well as the a and b coefficients of Parkinson vector by taking the measurement of graph and using empirical formula. There are some examples, such as the 1923 Kanto M=7.9 earthquake (Yanagihara, 1972), the 1966 Tashkent M=5.5 earthquake, t…
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Short-term precursor of the geomagnetic horizontal field transfer functions |
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| GONG Shao-jing,TIAN Zhen-li,QI Cheng-zhu,He Shu-min,YAN Xiao-mei,CHEN Hua-ran,LI Lian-di. Short-term precursor of the geomagnetic horizontal field transfer functions[J]. Acta Seismologica Sinica(English Edition), 2001, 14(3): 293-302. DOI: 10.1007/s11589-001-0007-5 |
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| Authors: | GONG Shao-jing TIAN Zhen-li QI Cheng-zhu He Shu-min YAN Xiao-mei CHEN Hua-ran LI Lian-di |
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| Affiliation: | Seismological Bureau of Tianjin, |
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| Abstract: | In this paper, using the variometer data of Changli station and Baijiatuan station from 1972 to 1997, the inter-station transfer functions of horizontal field and the single-station transfer functions of vertical field have been calculated. With analyzing the whole changing process of the transfer functions, we have discovered that only the horizontal field transfer functions arose obvious short-term precursors before Tangshan earthquake. This fact may provide a new method for short-term prediction of earthquake. |
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| Keywords: | horizontal field transfer functions vertical field transfer functions short-term precursor of earthquake |
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