| Study of the Evolutionary Characteristics of Precursor Information Fields in North China Region and Their Relation to Earthquakes |
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| 作者姓名： | Ping Jianjun Luo Lange Cao Suchao |
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| 作者单位： | Ping Jianjun，Luo Lange and Cao SuchaoSeismoiogicaJ Bureau of Hehei Province，Shijiazhuang 050021，China |
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| 基金项目： | the project of "Ninth Five-year Plan" of China Seismological Bureau (95-04-01-02-02), China. |
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| 摘 要： | On the basis of previous study results about the seismic anomaly precursor information quantity, universal and synthetic mathematical expressions that describe the precursor information quantity of various seismic anomalies are further given. Starting from large amounts of data of earthquake cases, the problem of the sustained effective time of seismic anomaly was studied again and the mathematical relationship between the sustained effective time of seismic anomaly and continuing effective time of seismic anomaly was further established. About one million pieces of precursor observation data belonging to 371 items of hydrochemistry, deformation, geomagnetism, stress, water level, geoelectricity, etc. In North China region in the period of 1980～ 1997 were collected and sorted out, and the seismic anomaly precursor information quantity of these items was calculated item by item. The evolutionary characteristics of seismic anomaly precursor information field in North China region in about 20 years and their relation to earthquakes were studied; an index system for medium- and short-term predictions of earthquakes with Ms ≥ 5.0 in North China region was established. After having checked by the R-value scoring method, the index system for synthetic earthquake prediction was proved to be of certain efficacy in medium- and short-term earthquake prediction.
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Study of the Evolutionary Characteristics of Precursor Information Fields in North China Region and Their Relation to Earthquakes |
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| Ping Jianjun,Luo Lange,Cao Suchao.Study of the Evolutionary Characteristics of Precursor Information Fields in North China Region and Their Relation to Earthquakes[J].Earthquake Research in China,2001,15(1):36-46. |
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| Authors: | Ping Jianjun Luo Lange and Cao Suchao |
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| Institution: | Seismological Bureau of Hebei Province, Shijiazhuang 050021, China Seismological Bureau of Hebei Province, Shijiazhuang 050021, China Seismological Bureau of Hebei Province, Shijiazhuang 050021, China |
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| Abstract: | |
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| Keywords: | Earthquake anomaly Information field Evolutional characteristics |
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