Deep process of the rupture of strong earthquakes and exploration for the impending earthquake prediction

作者：Teng Ji-Wen^*; Zhang Yong-Qian; Yan Ya-Fen

来源：Acta Geophysica Sinica, 2009, 52(2): 428-443.

• Strong earthquake
• Source medium
• Micro-rupture
• Rupture chain
• Impending earthquake prediction

The medium around source and its nearby area of strong earthquakes will rupture under the action of force, and it is called micro-rupture. When the micro-rupture develops to a "rupture chain" of a certain length, it will radiate energy and break out of earth surface, so an earthquake occurs and it causes a series of damages and large scale faults. Based on the initial model and the seismic record of far and nearby seismic station net, we can get the rupture length and rupture process of the source medium after a strong earthquake occurred. The facts show that strong rupture effects will occur from the source zone to the earth surface when a series of big earthquakes "pregnancy", occur and develop, and the rupture length ranges from several kilometers to thousands of kilometers. It is also certain that rupture response exists before some earthquakes. Therefore, if we can do some rupture effect observation on surface and in deep hole, and obtain the dynamic process of the "rupture chain" developing from the micro-rupture. it will be an important method for the impending earthquake prediction.

• 出版日期2009-2
• 单位中国科学院地质与地球物理研究所; 中国科学院地质与地球物理研究所兰州油气资源研究中心