陈婷,王晓山,孙丽娜. 太行山隆起及邻区地壳S波Q值成像特征[J]. 华北地震科学,2021, 39(2):67-72. doi:10.3969/j.issn.1003−1375.2021.02.010.
引用本文: 陈婷,王晓山,孙丽娜. 太行山隆起及邻区地壳S波Q值成像特征[J]. 华北地震科学,2021, 39(2):67-72. doi:10.3969/j.issn.1003−1375.2021.02.010.
CHEN Ting,WANG Xiaoshan,SUN Li'na. Crustal QS Tomography in Taihangshan Uplift and Adjacent Regions[J]. North China Earthquake Sciences,2021, 39(2):67-72. doi:10.3969/j.issn.1003−1375.2021.02.010.
Citation: CHEN Ting,WANG Xiaoshan,SUN Li'na. Crustal QS Tomography in Taihangshan Uplift and Adjacent Regions[J]. North China Earthquake Sciences,2021, 39(2):67-72. doi:10.3969/j.issn.1003−1375.2021.02.010.

太行山隆起及邻区地壳S波Q值成像特征

Crustal QS Tomography in Taihangshan Uplift and Adjacent Regions

  • 摘要: 利用2009—2018年ML2.0以上地震事件波形资料,对太行山隆起及邻区进行地壳S波Q值成像,结合地震活动和大地热流等分析该区地壳介质衰减特征。结果表明,研究区地壳QS值横向变化显著,总体上地形越低、构造活动越强烈的地区QS值越低,QS值分布与地形和构造活动明显相关;1900年以来大部分6级以上地震发生在低QS值区域边界,尤其是山东菏泽和河北邢台2个强震多发区低QS值更为显著;研究区内大部分热流点位于低QS值区域,热流值与QS值呈负对应关系。

     

    Abstract: Use the waveform data of ML≥2.0 earthquake events from 2009 to 2018, the crustal QS in Taihangshan uplift and adjacent regions are imaged. Combined with seismic activity and heat flow we study the characteristics of the crustal attenuation. The results show that the crustal QS value in the study area changes significantly laterally. In general, the lower the topography and the stronger the tectonic activity, the lower the QS value. The distribution of QS value is obviously related to topography and tectonic activities. Most M≥6 earthquakes since 1900 are located in the boundary of low QS regions, especially the two belts of seismic activity in Heze, Shandong province and Xingtai, Hebei province. Most of the heat flow points in the study area are located in areas with low QS values. There is a negative correspondence between the heat flow value and QS value.

     

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