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Study on the Anisotropy of the Underground Medium in Hohhot
Zhang Hui,Zhai Hao,Han Xiaoming
作者单位E-mail
Zhang Hui Earthquake Agency of Inner Mongolia Autonomous Region, Hohhot 010010, China  
Zhai Hao Earthquake Agency of Inner Mongolia Autonomous Region, Hohhot 010010, China 496831965@qq.com 
Han Xiaoming Earthquake Agency of Inner Mongolia Autonomous Region, Hohhot 010010, China  
摘要:
In this paper, the data of earthquake events of magnitude MS6.0 and above produced in Hohhot Seismic Station from 2008 to 2015 and the data of ML ≥ 1.0 seismic events from 2015 to 2016 in Horinger Seismic Station and the surrounding mobile stations in southern Hohhot are selected. Using Splitlab and SAM software, the spin-correlation method, the least-energy method and the cross-correlation coefficient method are used to analyze the teleseismic and near-seismic phases (SKS, S). The results of this study are in good agreement with the results previously obtained by other researchers. The study of teleseismic SKS splitting reflects the characteristics of the anisotropy of the upper mantle beneath Hohhot, that is, the anisotropy of the upper mantle shows NW, which reflects "fossil" Anisotropy, mainly in the continental structure of stable units and preserves the history of mantle deformation information. The crustal anisotropy reflected by the near-earthquake S-wave splitting study is similar to that of the active fault zone, trending NE as a whole and is consistent with the tectonic stress field background of the northeastern margin of Ordos block.
关键词:  Hohhot  S-wave splitting  Anisotropy
DOI:
分类号:
基金项目:This research was jiontly funded by Major Science and Technology Project in Inner Mongolia Autonomous Region "Research and Development of Earthquake Rorecasting and Early Warning Technologies in Key area" and China Earthquake Administration Monitoing Forecasting and Scientific research three-joint Project "Application of Hypo2000 Zoning Model in J0PENS60" (CEA-JC/3JH-170609X).
Study on the Anisotropy of the Underground Medium in Hohhot
Zhang Hui,Zhai Hao,Han Xiaoming
Abstract:
In this paper, the data of earthquake events of magnitude MS6.0 and above produced in Hohhot Seismic Station from 2008 to 2015 and the data of ML ≥ 1.0 seismic events from 2015 to 2016 in Horinger Seismic Station and the surrounding mobile stations in southern Hohhot are selected. Using Splitlab and SAM software, the spin-correlation method, the least-energy method and the cross-correlation coefficient method are used to analyze the teleseismic and near-seismic phases (SKS, S). The results of this study are in good agreement with the results previously obtained by other researchers. The study of teleseismic SKS splitting reflects the characteristics of the anisotropy of the upper mantle beneath Hohhot, that is, the anisotropy of the upper mantle shows NW, which reflects "fossil" Anisotropy, mainly in the continental structure of stable units and preserves the history of mantle deformation information. The crustal anisotropy reflected by the near-earthquake S-wave splitting study is similar to that of the active fault zone, trending NE as a whole and is consistent with the tectonic stress field background of the northeastern margin of Ordos block.
Key words:  Hohhot  S-wave splitting  Anisotropy