Three-dimensional crustal p-wave velocity structure and seismicity analysis in beijing-tianjin-tangshan region
文献类型：期刊论文
| 作者 | Yu Xiang-Wei1; Chen Yun-Tai2; Zhang Huai1 |
| 刊名 | Chinese journal of geophysics-chinese edition
 |
| 出版日期 | 2010-08-01 |
| 卷号 | 53期号:8页码:1817-1828 |
| 关键词 | Double-difference seismic tomography Velocity structure Seismicity Lateral heterogeneities |
| ISSN号 | 0001-5733 |
| DOI | 10.3969/j.issn.0001-5733.2010.08.007 |
| 通讯作者 | Yu xiang-wei(yuxw@gucas.ac.cn) |
| 英文摘要 | In this paper, we present a joint inversion investigation of both three-dimensional crustal p-wave structures and hypocenter parameters using double-difference seismic tomography method in beijing-tianjin-tangshan (btt) region. the double-difference seismic tomography method was adopted to refine the absolute and relative event locations and p-wave velocity structures simultaneously with the direct use of both absolute arrival times and the more accurate differential travel times. these data came from the earthquake catalog records of totally 3983 events recorded by 112 stations from the northern china telemetry seismic network (nctsn) and capital digital seismic network (cdsn) in btt region during the years of 1993 to 2004. the inversion results indicated that this method produced a more pronounced and detailed velocity model of the btt region, which was more consistent with the features of the local geological setting. it revealed the low p-wave velocity anomaly in the plains and basins. in the uplifts of mountain and exposed rock areas, it appeared as high p-wave velocity anomalies. in the btt region, after being projected to the horizontal p-wave relative velocity perturbation maps in 10 km and 15 km depths, the relocated hypocenters of magnitude m(l)>= 3. 0 earthquakes showed identical features with those of the historic earthquakes with magnitude m >= 6. 0. the majority of the hypocenters were located in the conjunctional areas of low and high p-wave velocity anomalies. and they were slightly closer to the high p-wave velocity abnormal areas. only few earthquakes have ever occurred within the high p-wave velocity anomalies. |
| WOS关键词 | HAYWARD FAULT ; CALIFORNIA ; CHINA |
| WOS研究方向 | Geochemistry & Geophysics |
| WOS类目 | Geochemistry & Geophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:000281331800007 |
| 出版者 | SCIENCE CHINA PRESS |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2405744 |
| 专题 | 中国科学院大学 |
| 通讯作者 | Yu Xiang-Wei |
| 作者单位 | 1.Chinese Acad Sci, Grad Univ, Lab Computat Geodynam, Beijing 100049, Peoples R China 2.Peking Univ, Sch Earth & Space Sci, Beijing 100871, Peoples R China |
| 推荐引用方式 GB/T 7714 | Yu Xiang-Wei,Chen Yun-Tai,Zhang Huai. Three-dimensional crustal p-wave velocity structure and seismicity analysis in beijing-tianjin-tangshan region[J]. Chinese journal of geophysics-chinese edition,2010,53(8):1817-1828. |
| APA | Yu Xiang-Wei,Chen Yun-Tai,&Zhang Huai.(2010).Three-dimensional crustal p-wave velocity structure and seismicity analysis in beijing-tianjin-tangshan region.Chinese journal of geophysics-chinese edition,53(8),1817-1828. |
| MLA | Yu Xiang-Wei,et al."Three-dimensional crustal p-wave velocity structure and seismicity analysis in beijing-tianjin-tangshan region".Chinese journal of geophysics-chinese edition 53.8(2010):1817-1828. |
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