地震与E1 Nino事件的联系  

RELATION BETWEEN SEISMICITY AND EL NINO EVENT

作　　者：顾震年[1] 

机构地区：[1]中国科学院上海天文台,上海200030

出　　处：《中国科学院上海天文台年刊》1999年第20期23-28,共6页Annals Shanghai Astronomical Observatory Chinese Academy of Sciences

摘　　要：采用Harvard目录中1977～1994年及1960～1993年间的地震有关参数，由Dahlen理论和Lambeck推出的有关公式估计了地震引起地球轴向惯性短的累积变化，分析了地震和E1Nino事件之间的联系，特别是震级大于5级的地震引起的位错所产生的地球轴向惯性矩的变化公有一个跳跃，这个跳跃和E1Nino事件有着很好的对应关系。Using the fault plane parameters, the epicenter location and the expression given by Dahlen and Lambeck, the accumulative changes of the equatorial moment of the inertia of the Earth for 1977～1994and 1960～1991 data in Harvard table is estimated. A relation between the E1 Nino event and the seismic activity is found. The seismic activity especially for the earthquakes (EQ ) with magnitude greater than 5.0 could induce the sudden jump of the axial moment of inertia of the Earth by dislocation caused by the EQ. The jump has a good cormspondence with the peak of the E1 Nino event.

关 键 词：地震 厄尔尼诺事件 位错 地球 轴向惯性矩 

分 类 号：P732[天文地球—海洋科学]