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地震

地震 ›› 2001, Vol. 21 ›› Issue (1): 91-97.

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硫化物的映震特征及其映震机理的研究*

高小其, 王道, 许秋龙, 李艳萍, 李新勇, 冯晓晖   

  1. 新疆维吾尔自治区地震局, 乌鲁木齐 830011
  • 出版日期:2001-01-31 发布日期:2022-10-27
  • 作者简介:高小其(1967-),男,山东单县人,助理研究员,主要从事地下流体监测、预报的研究。
  • 基金资助:
    新疆维吾尔自治区地震局基金项目(9809)

Study on the earthquake-reflecting characteristics of sulfide and its earthquake-reflecting mechanism

GAO Xiao-qi, WANG Dao, XU Qiu-long, LI Yan-ping, FENG Xiao-hui   

  1. Seismological Bureau of Xinjiang Uygur Autonomous Region, Urumqi 830011, China
  • Online:2001-01-31 Published:2022-10-27

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摘要： 概述了硫化物监测点的水文地质及硫化物的来源和存在形式,并结合近二十多年来的震例,分析和总结了硫化物的映震特征。表明硫化物的地震前兆异常基本上都是正异常,且具有一定的重复性,即硫化物测值遵循背景值-趋势性上升(或突升)-最高值-趋势性下降(或突降)-恢复至背景值,而地震常常发生在硫化物由高变低(靠近背景值)的过程中。并对硫化物异常形成原因进行了探讨,认为硫化物在生成过程中明显受孔隙压力(压强)的影响,这也是硫化物具有一定映震特征的主要原因。

关键词: 硫化物, 映震机理, 地震前兆, 新疆维吾尔族自治区

Abstract: This paper described the hydrog eolo gical characteristics of the mo ni tored spring si tes, the origin and existent form of their sulfides. Combined the earthquakes cased in the past more than 20 years, the earthquake-ref lecting fea tures are analyzed and summarized. The results indica te that the ear thqua ke precursor anomaly of the sulfides is usually no rmal, which show sacertain repeated pro perty. That is, the change of sulfide values isas follows: backg round value-trend ri se(or sudden ri se)-t rend drop (or sudden drop)-recov ered to the backg round value. Usually the earthquakes occurred in the stag e w hen sulfide values changed from the hig hervalue to the lowvalue(close to the backg roundone). In this paper, the autho rsalso di scussed the origin of anomaly and concluded that the evident ef fect of pore pressure(pressure intensity) on thegenera tion of sulfides is the majororigin of sulfides having acertain earthquake ref lecting features.

Key words: Sulfide, Earthquake-reflecting mechanism, Earthquake precursor, Xinjiang Uygur Autonomous Region

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