张从珍, 刘继禄, 陈立强. 京西北地区近震波速、平均波速比及地壳厚度的测定[J]. 华北地震科学, 2000, 18(2): 70-75.
引用本文: 张从珍, 刘继禄, 陈立强. 京西北地区近震波速、平均波速比及地壳厚度的测定[J]. 华北地震科学, 2000, 18(2): 70-75.
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Zhang Congzhen, Liu Jilu, Chen Liqiang. THE SURVEY FOR WAVE VELOCITY OF NEAR EARTHQUAKES AND MEAN VP/VS RATIO IN NORTHWEST BEIJING AND THE DEPTH OF CRUST[J]. North China Earthquake Sciences, 2000, 18(2): 70-75.
Citation: Zhang Congzhen, Liu Jilu, Chen Liqiang. THE SURVEY FOR WAVE VELOCITY OF NEAR EARTHQUAKES AND MEAN VP/VS RATIO IN NORTHWEST BEIJING AND THE DEPTH OF CRUST[J]. North China Earthquake Sciences, 2000, 18(2): 70-75.
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京西北地区近震波速、平均波速比及地壳厚度的测定

THE SURVEY FOR WAVE VELOCITY OF NEAR EARTHQUAKES AND MEAN VP/VS RATIO IN NORTHWEST BEIJING AND THE DEPTH OF CRUST

    摘要
  • 摘要: 本文选取阳原台DD-2型地震仪在 1998-1999年间记录清晰、可靠的50次张北地震和记录到Pn震相的25次地震资料。通过计算,得到京西北地区直达波的平均传播速度为:Vpg=5.99km/s,Vsg=3.47km/s,平均波速比 Vpg/Vsg=1.73,京西北地区的地壳厚度为 41 Km。

     

    Abstract: The data of 50 Zhangbei after shocks and the Pn seismic phase of 25 aftershocks recorded clearly and reliably by DD-2 Seimograph of Yangyuan seismostation during 1998 to 1999 period are analyzed.Through calculation we get the following results:the mean propagation velocity of direct wave in northwest Beijing area is Vps=5.99Km/s, Vsg=3.47Km/s,mean Vpg/Vsg=1.73,the crustal depth of the region is 41km.

     

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