营口—海城地区一维速度模型研究
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摘要
营口—海城地区是省内地震活跃区,每年地震条目占总数的2/3以上。这一地区又是辽宁省各项地震学研究的重点,所以研究适合该区域地壳速度结构是非常有意义的。本研究选取该地区地震,提取震相,拟合波速,使用Hyposat定位方法计算出适合该地区的速度模型。通过一系列的研究可以看出营海模型比辽宁模型能更好的定位地震,营海模型的走时残差也要更小,更适合营口—海城地区的实际地质情况。
Yingkou-Haicheng area is an active earthquake area in Liaoning province. The annual earthquake entries account for more than 2/3 of the total. This area is the focus of seismological research in Liaoning province. So it is meaningful to study the structure of the crustal velocity in the region. We selected the earthquake in this area, seismic phase extraction, fitting wave velocity, and used Hyposat to calculate the speed model suitable for the area. The results of the study show that Yinghai model has better positioning effect. The travel time residuals are better than the Liaoning model, which is more suitable for the crustal structure of the Yinghai region.
Yingkou-Haicheng area is an active earthquake area in Liaoning province. The annual earthquake entries account for more than 2/3 of the total. This area is the focus of seismological research in Liaoning province. So it is meaningful to study the structure of the crustal velocity in the region. We selected the earthquake in this area, seismic phase extraction, fitting wave velocity, and used Hyposat to calculate the speed model suitable for the area. The results of the study show that Yinghai model has better positioning effect. The travel time residuals are better than the Liaoning model, which is more suitable for the crustal structure of the Yinghai region.
引文
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[3]王亮,周龙泉,焦明若,等.海城盖州地区速度结构和震源位置的联合反演研究[J]. 2014, 07(3)13-26.
[4]朱元清,石耀霖,李平.一种确定地震深度的新方法[J].地震地磁观测与研究,1990,11(2):4-12.
[5]朱元清.确定震源深度的PTD方法及其应用[J].地震地磁观测与研究,1997,18(3):21-26.
[6]殷伟伟,陈存田,刘林飞,等.PTD方法在山西震源深度测定中的应用研究[J].山西地震,2016, 09(3):33-36.
[7]高常波,钟以章.1999年辽宁海城—岫岩5.6级地震的地质构造背景和发震构造[J].地震地质,2000,22(4):405-412.
[2]顾浩鼎,陈运泰,高祥林,等.1975年2月4日辽宁省海城地震的震源机制[J].地球物理学报,1976,19(4):270-285.
[3]王亮,周龙泉,焦明若,等.海城盖州地区速度结构和震源位置的联合反演研究[J]. 2014, 07(3)13-26.
[4]朱元清,石耀霖,李平.一种确定地震深度的新方法[J].地震地磁观测与研究,1990,11(2):4-12.
[5]朱元清.确定震源深度的PTD方法及其应用[J].地震地磁观测与研究,1997,18(3):21-26.
[6]殷伟伟,陈存田,刘林飞,等.PTD方法在山西震源深度测定中的应用研究[J].山西地震,2016, 09(3):33-36.
[7]高常波,钟以章.1999年辽宁海城—岫岩5.6级地震的地质构造背景和发震构造[J].地震地质,2000,22(4):405-412.