| 新疆天山地震带的地震流体地质效应 |
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| 引用本文： | 蔡仲琼.新疆天山地震带的地震流体地质效应[J].西北地震学报,1986,8(4):20-25. |
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| 作者姓名： | 蔡仲琼 |
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| 作者单位： | 新疆维吾尔自治区地震局 |
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| 摘 要： | 天山地区的高压自流水、高压油气藏及地热异常区的出露与天山地震带分布的一致性表明,孔隙水压异常高的动力条件可能成为触发浅源地震的重要机制。本文以丰富的震例为依据,认为天山地震带中强地震前地下流体出现两类异常:一类是应力应变能积累阶段的趋势性异常;一类是应力应变能预释放阶段的临震突发性异常。两类异常在形态上和时空分布上有完全不同的特征,它们显示出地震孕育过程中的两个完全不同的物理、化学过程。
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| 收稿时间： | 1985/11/15 0:00:00 |
THE EFFECT OF SEISMIC HYDROGEOLOGY OF THE TIANSHAN EARTHQUAKE ZONE,XINJIANG |
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| Cai Zhongqiong.THE EFFECT OF SEISMIC HYDROGEOLOGY OF THE TIANSHAN EARTHQUAKE ZONE,XINJIANG[J].Northwestern Seismological Journal,1986,8(4):20-25. |
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| Authors: | Cai Zhongqiong |
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| Institution: | The Seismological Bureu of Xinjiang Uighur Autonomous Rigion |
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| Abstract: | In the Tianshan region, the high pressure artesian water, high pressure oil-gas deposits and exposure of terrestrial heat anomalus area which are consistent with the distribution of the TianShan earthquake zone indicate that the dynamic condition of pore water pressure with high anomaly is likely to be an important machanism for triggering shallow focus earthquake. Based on many events, it can be considered that underground fluid has two kinds of anomalies before moderate and strong earthquakes in the TianShan earthquake zone. The first is the tendency anomaly during accumulated stage of stress-strain energy:The second is the abrupt anomaly of impending earthquake during pre-reteased stage of stress-strain energy. These two anomalies are entirely different in shape and time-space distribution, and show two quite different, physical and chemical processes during earthquake pregnant process. The seismic precursor components of fluid have own characteristics in different active zones. During the seismicity of the TianShan earthquake zone, the water level, petroleum amount, radon, conductance, and its gaseous components such as H2S, CH4 and CO2 always appear anomalous.We predicted the Bogeda earthquake (Ms=5.3)on June 1.1983 by means of these two anomalies characteristics of the fluid components. This prediction was based on the synthetic observation and study of synthetics with many terms and components, it''s perhaps important way to raise the research level of earthquake prediction for underground fluid. |
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