中文摘要：

从2004—12—26苏门答腊（Mw=9．3）大地震发生后，在该区域诱发的137个地震的波形记录中提取出了清晰的T波，并分析研究了T波波形特征与地震震源参数的相关性．通过分析计算得到如下结论：（I）对于同一震级的地震，走滑型地震在海水声纳层中激发的T波能量大于正逆断层型地震；（Ⅱ）随着深度的增加，激发的T波与P波能量的比值（T／P）在逐渐减小；（Ⅲ）T与P，S波峰值到时差与地震震中距呈现较好的线性关系；（Ⅳ）在纬度1．0至2．5的区域，存在一个地震波向声波转换效率高的区域．

英文摘要：

A total number of 137 earthquakes that occurred after the Big Sumatra earthquake （2004-12-26, Mw= 9.3） in the area of Sumatra were used to investigate the relationship between T-wave acoustic energy nd investi ation results show that （ Ⅰ ） for those and the earthquake fault parameters. Computation a g earthquakes of a common given magnitude, T-wave energy produced by normal and reverse fault is lower than that of strike-slip events; （ Ⅱ ） Twave energy decreases with the increase in earthquake depth; （Ⅲ） there is a good linear relationship between the travel time difference and the epicentral distance; （Ⅳ） a high efficient T-wave conversion area exists in the latitude range from 1.0 degree to 2.5 degree.