| Study on Typical Characteristics of Short-Term Precursors in Underground Fluid |
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| 作者姓名： | Liu Yaowei |
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| 作者单位： | Liu Yaowei 1)，Cao Lingling 2) and Ping Jianjun 3) 1) Institute of Crustal Dynamics，CEA，Beijing 100085，China 2) Lanzhou Institute of Seismology，CEA，Lanzhou 730000，China 3) Earthquake Administration of Hebei Province，Shijiazhuang 050021，China |
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| 基金项目： | The study was sponsored under the special project of
“The physical analysis and interpretation of characteristics of short-term precursors to strong earthquake” in the 10th “Five-Year Plan” Sate Key Technologies R ＆ D Programs （2001BA601B02-02）. |
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| 摘 要： | INTRODUCTION Existingresearchresultsindicatethattherearecloserelationsbetweenundergroundfluidandseismicactivity,especiallyintheshort termanomaliesofearthquakes.Anomalyinthefluidisobvious andthequantityislarge.Duringearthquakepreparation,thedrivingforcemec…
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| 关 键 词： | 地震 流动性 典型特征 中国 北方地区 |
| 收稿时间： | March 8,2004 |
Study on Typical Characteristics of Short-Term Precursors in Underground Fluid |
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| Liu Yaowei.Study on Typical Characteristics of Short-Term Precursors in Underground Fluid[J].Earthquake Research in China,2005,19(2):170-180. |
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| Authors: | Liu Yaowei |
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| Institution: | Institute of Crustal Dynamics, CEA, Beijing 100085, China |
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| Abstract: | The underground fluid short-term anomalies of earthquake activity are studied. Two kinds of typical characteristics of precursors, the turn-around type and the single type, are summarized. Through studying regional characteristics of earthquake precursors in North China (including Northwest China) and Southwest China, we find that the two types of precursors are strongly related to geological structures in regional distribution and they show varying characteristics with earthquake magnitude in number. |
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| Keywords: | Underground fluid Short-term precursor Typical characteristics |
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