基于地壳介质各向异性分析湖北及周边地区应力特征
作者:
作者单位:

作者简介:

通讯作者:

基金项目:

中国地震局星火计划项目(XH15029YSX)


Tectonic Stress Analysis Based on Crustal Seismic Anisotropy in Hubei and Its Surrounding Areas
Author:
Affiliation:

Fund Project:

  • 摘要
  • |
  • 图/表
  • |
  • 访问统计
  • |
  • 参考文献
  • |
  • 相似文献
  • |
  • 引证文献
  • |
  • 资源附件
    摘要:

    利用湖北及周边地区数字地震台网2007年12月1日-2013年12月31日的地震观测波形资料,使用剪切波分裂SAM系统分析方法,获得了该地区18个数字地震台站的快剪切波偏振结果。结果表明,湖北地区少部分地震存在S波分裂现象,18个台站的快剪切波偏振优势方向为NE、近NS方向,并无明显的第一优势偏振方向,说明该区台站应力场可能为区域构造背景应力环境与局部断裂诱导的各向异性综合效应;复杂的局部构造会影响剪切波分裂结果,造成偏振优势方向与主要活动断裂走向不一致或与区域主压应力相差较大的现象。

    Abstract:

    In this paper, Seismological Network (2007-12-01-2013-12-31) data from Hubei and its surrounding areas are analyzed via the seismic anisotropy method. Shear-wave splitting parameters from 16 stations are obtained. The results show some S-wave splitting phenomena in Hubei and its surrounding areas, and that the dominant directions of fast shear-wave polarization are the northeast and or nearly northsouth directions and there is no first advantage of polarization direction obviously. The stress field of the stations may be the comprehensive result of regional tectonic background stress environments and induced local fractures. Complex local structures may affect the shear-wave splitting results by reducing the dominant polarization direction, which is not in accordance with the strike of the main active faults. Significant differences between the regional principal compressive stress and dominant polarization direction may also affect the results.

    参考文献
    相似文献
    引证文献
引用本文

赵凌云,高原,太凌雪,申学林,魏贵春.基于地壳介质各向异性分析湖北及周边地区应力特征[J].地震工程学报,2017,39(2):278-284,300. ZHAO Ling-yun, GAO Yuan, TAI Lin-xue, SHEN Xue-lin, WEI Gui-chun. Tectonic Stress Analysis Based on Crustal Seismic Anisotropy in Hubei and Its Surrounding Areas[J]. China Earthquake Engineering Journal,2017,39(2):278-284,300.

复制
分享
文章指标
  • 点击次数:
  • 下载次数:
历史
  • 收稿日期:2016-01-25
  • 最后修改日期:
  • 录用日期:
  • 在线发布日期: 2017-05-16