【摘要】 2008年5月12日发生了汶川8.0级大地震,震前的定点形变观测值曲线异常很少。震后通过对定点形变观测台站的震前数据进行了深入分析和处理,发现在汶川8.0级地震前存在形变异常,且距震中较近的台站,出现的异常信息的频率较高;距震中稍远的台站,出现的异常信息的频率较低。对这些现象进行了初步的解释。更多还原

【Abstract】 A Ms 8.0 earthquake struck Wenchuan on 12 May 2008 and anomaly of observation curve of fixed deformation stations is little.After the earthquake observation data before earthquake have been analyzed and processed.The result shows that deformation reveals anomalies before Wenchuan Ms 8.0 earthquake.The frequency of anomalies are high when stations are near from the earthquake epicenter and the frequency are low when stations are far from the earthquake epicenter.Finally the phenomena have been primary explained.更多还原