【摘要】 利用江西数字地震台网记录到的波形资料计算了2005年11月26日九江—瑞昌MS5.7级地震序列的视应力,并对视应力与震级和深度的关系进行了讨论,结果发现视应力随着序列活动水平降低逐渐趋于平稳,ML 4.0以下的地震视应力与震级相关性较小,ML 4.0以上地震的视应力值随震级增加呈非线形快速增大;视应力大小与深度关系不明显,深度在9～12km时视应力相对要高,该范围也是整个序列震源深度的优势分布范围,视应力高值的深度范围靠近主震的震源位置。更多还原

【Abstract】 The apparent stress of the MS 5.7 earthquake happened in Jiujiang-Ruichang region on Nov.26,2005 has been calculated by using the waveform data recorded by the digital seismic network of Jiangxi province and then the relationship between the apparent stress and the hypocenter depth has been discussed.It is concluded that the value of the apparent stress gradually becomes more stable with the reduction of the seismic activity.The apparent stress with ML<4.0 has less relativity with the magnitude,otherwise,the apparent stress with ML≥4.0 has non-linear increase with the magnitude.It is not obvious that is the relation between the apparent stress and the hypocenter depth.When the depth is on the range of 9~12㎞,the apparent stress shows higher value.This range is also the predominance distribution for the hypocenter depth of the seismic sequence.The depth with the highest apparent stress is near the hypocenter of the main shock.更多还原