| 渭河断陷及邻近地区地壳S波速度图象 |
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| 引用本文： | 袁志祥,丁韫玉,狄秀玲.渭河断陷及邻近地区地壳S波速度图象[J].地震地质,1999,21(1):9-11. |
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| 作者姓名： | 袁志祥 丁韫玉 狄秀玲 |
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| 作者单位： | 陕西省地震局,地震研究所,西安,710068 |
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| 摘 要： | 选取１０４～１１２°Ｅ，３２．５～３８°Ｎ区域内陕西、山西、河南、湖北、甘肃、宁夏等省区的区域地震台网１９８４～１９９３年的１９４６个天然地震的Ｓ波观测资料，用地震层析成像方法反演了渭河断陷及其邻近地区的地壳Ｓ波速度图象，其结果表明地壳深部Ｓ波速度结构的不均匀性与该区大地构造单元、断裂构造及地震活动密切相关
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| 关 键 词： | 渭河地堑系 地震层析成像 S波 波速构造 |
THE CRUSTAL SEISMIC S WAVE VELOCITY IMAGE IN THE WEIHE DOWNFAULTED BASIN AND ITS ADJACENT AREAS |
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| Yuan Zhixiang,Ding Yunyu,Di Xiuling.THE CRUSTAL SEISMIC S WAVE VELOCITY IMAGE IN THE WEIHE DOWNFAULTED BASIN AND ITS ADJACENT AREAS[J].Seismology and Geology,1999,21(1):9-11. |
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| Authors: | Yuan Zhixiang Ding Yunyu Di Xiuling |
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| Abstract: | The S wave data are selected from the records of 1 946 earthquakes observed in the period from 1984 to 1993 by seismic network in the zone of 104～112°E, 31.5～38°N in Shaanxi, Shanxi, Henan, Hubei, Gansu and Ningxia Provinces.The S wave velocity image of the crust beneath the Weihe downfaulted basin and adjacent areas is obtained by means of seismic tomographic technique. The results show that the non uniform S wave velocity structure of deep crust is closely related to the difference of geotectonic ele |
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| Keywords: | Weihe graben system Seismic tomography S wave Velocity structure |
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