葛焕称, 叶培元, 黄才中, 陆振飞. 中国东部地区Lg波的衰减和近震震级[J]. 华北地震科学, 1985, 3(4): 1-14.
引用本文: 葛焕称, 叶培元, 黄才中, 陆振飞. 中国东部地区Lg波的衰减和近震震级[J]. 华北地震科学, 1985, 3(4): 1-14.
Ge Huansheng, Ye Peiyuan, Huang Caizhong, Lu Zhenfei. LG WAVE ATTENUATION AND NEAR SHOCK MAGNITUDE IN THE EASTERN REGION OF CHINA[J]. North China Earthquake Sciences, 1985, 3(4): 1-14.
Citation: Ge Huansheng, Ye Peiyuan, Huang Caizhong, Lu Zhenfei. LG WAVE ATTENUATION AND NEAR SHOCK MAGNITUDE IN THE EASTERN REGION OF CHINA[J]. North China Earthquake Sciences, 1985, 3(4): 1-14.

中国东部地区Lg波的衰减和近震震级

LG WAVE ATTENUATION AND NEAR SHOCK MAGNITUDE IN THE EASTERN REGION OF CHINA

  • 摘要: 本文利用中国东部苏鲁豫皖冀浙六省所属地区的80个区域地震台的资料,选取了该区及其附近的19个3~5级地震,分别对Z向和H向测定了Lg震相的走时和振幅,及最大震相Max的振幅,共有近3000组数据。测得本区Lg波传播速度为3.54km/s。根据Z向和H向,加权与不加权等几种计算方法,在50~1100Km范围内算得的各种衰减系数之间符合得很好。#br#中国东部地区苏鲁豫皖冀浙六省及其邻近地区,约在28°N~42°N,110°E~124°E范围内(图1),我们研究了Lg波的传播速度、衰减特征和mlgz、mlgh、mmxz、mmxh四种近震震级。

     

    Abstract: From the data of 80 local stations, in the eastern six provinces and vicinity 19 earthquakes of magnitudes 3-5 are selected to measure travel-time and amplitude of LGZ, LGH, MXZ and MXH wave phase.Basing on these 3000 data sets, wave propaga-tion velocity of 3.54K M/Sec has been obtained.The attenuation coefficients of Lg wave are calculated by synthetic regression method in the distance of 50-100KM.The results of a weighted and not of Z and H cmponents by weighted method and nonweighted are consistent very well with each other.

     

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