集集地震与汶川地震、美国西部地震的近场区视波速比较

PDF(1215 KB)

振动与冲击 ›› 2013, Vol. 32 ›› Issue (14) : 192-195.

论文

集集地震与汶川地震、美国西部地震的近场区视波速比较

赵世伟1 罗奇峰2

作者信息 +

Apparent Wave Velocity Comparison Near the Seismic Zone of Chi-chi Earthquake and Wenchuan Earthquake, the Western U.S. Earthquake

ZHAO Shi-wei1 LUO Qi-feng2

Author information +

文章历史 +

摘要

视波速是由地震动平动分量计算转动分量的重要参数，本文利用10个台站30条集集地震波加速度记录按文中所述方法得出该场地视波速，并与他人计算的汶川地震和美国西部地区的近场视波速进行了比较。比较结果表明，本文由集集地震的视波速曲线与他人用同样方法分别从汶川地震记录和美国地震记录得到的视波速大小与变化情况均有不同，这种差别会直接影响转动分量的计算精度。美国西部地区随频率增加又减小的趋势，但其他两个地区随频率保持缓慢增加。

Abstract

The apparent wave velocity is an important parameter and of critical for its accuracy on calculating the rotational components.This paper using 10 stations 30 of seismic wave acceleration records according to the chi-chi referred the method has the group wave velocity and visual wave velocity, analyzes and compares the field wave velocity of the wenchuan earthquake and the United States in the western area. It shows that this article by chi-chi earthquake visua wave speed curve and others with the same method respectively from the wenchuan earthquake records and the seismic records of the United States in the western area depending on the size and geting wave velocity variation are different, the differences will directly influence the calculation precision of rotating component. In the western United States with increased frequency and reduce the trend, but the other two areas on frequency keeping slow increase.

导出引用

赵世伟罗奇峰. 集集地震与汶川地震、美国西部地震的近场区视波速比较[J]. 振动与冲击, 2013, 32(14): 192-195

ZHAO Shi-wei LUO Qi-feng. Apparent Wave Velocity Comparison Near the Seismic Zone of Chi-chi Earthquake and Wenchuan Earthquake, the Western U.S. Earthquake[J]. Journal of Vibration and Shock, 2013, 32(14): 192-195