地球深部流体的状态及其在震源物理中的意义  

The state of fluids deep inside the Earth and its significance in the physics of earthquake sources

作　　者：李世愚[1] 张洪魁[2] 和泰名[1] 赵玉林[1] 钱复业[1] 

机构地区：[1]中国地震局地球物理研究所,北京100081 [2]北京地震局,北京100080

出　　处：《物理》2009年第4期238-247,共10页Physics

基　　金：中国地震局地震行业科研专项基金(批准号:8-54)资助项目

摘　　要：许多地震前兆的机理与地球深部流体相关.文章介绍了与此有关的地球深部流体状态的研究进展.通过间接的证据和从若干超深井钻孔探测得到的直接证据,着重介绍了深部水的数量、存在状态和性质,估计地球深部流体孔隙压力和连通性.研究表明,地球深部高温高压状态下的水处于超临界状态,超临界水具有许多特殊性质,这些特殊性质使得流体不仅成为强震前兆的传播媒介和震源破裂过程的影响因素,而且成为直接参与震源动力过程的介质.The mechanism of many earthquake precursors is related to fluids deep inside the Earth.In this paper,recent studies on the status of fluids inside the earth are reviewed.The quantity,existence and quality of the water,pore pressure and interconnection characteristics are discussed with regard to indirect and direct evidence from explorations with super-deep drill holes.According to recent results,water under high temperature and pressure within the earth is in a super-critical state and has many special characteristics.As a result,the liquids not only become the propagation medium for strong earthquake precursors and the influential factor in the process of earthquake source rupture,but are also a medium that directly takes part in the dynamic quake process.

关 键 词：震源物理 地震前兆 地电阻率 超临界流体 

分 类 号：P315.33[天文地球—地震学]