Current-day tectonic motion and intraplate deformation-strain field obtained from space geodesy in the Pacific Plate
文献类型：期刊论文
| 作者 | Li Yan-Xing; Zhang Jing-Hua; He Jian-Kun; Li Jin-Ling; Li Zhi; Guo Liang-Qian; Zhang Zhong-Fu; Du Xue-Song |
| 刊名 | CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION
 |
| 出版日期 | 2007-03-01 |
| 卷号 | 50期号:2页码:437-447 |
| 关键词 | PCFC elastic motion equation two kinds of models intraplate deformation strain field |
| ISSN号 | 0001-5733 |
| 文献子类 | Article |
| 英文摘要 | In this paper we present a plate elastic motion equation, and based on the space geodetic data of the Pacific plate (PCFC), create an elastic motion model for the PCFC. The coincidence of this model with the plate real motion status is obviously better than that of the rigid motion model. Our research indicates that the angular velocity of the current-day rotation of the PCFC is 0.037 degrees/Ma larger than the average in the past 3 Ma. The horizontal deformation within the PCFC is evident. In the region to the north of 15 degrees S and to the west of ,204.5 degrees E, there exists a consistent west-trending deformation with the rates of 0.8 similar to 3.5 mm/a and 1.0 similar to 3.4 mm/a in the NW and SW directions, respectively. In the southeastern region of the plate, there exists a coincident east-trending deformation with the rates of 1.5 similar to 1.8 mm/a and 2.8 similar to 9.1 mm/a in the NE and SE directions, respectively. The spatial variation of horizontal strain field within the PCFC is regular. In the northwestern part of the PCFC, the principal compressive strain axis is NW - SE and the principal compressive strain rate is larger than the principal tensile strain rate; while in the southeastern part of the PCFC, the principal compressive strain axis is NE - SW and the principal tensile strain rate is larger than the principal compressive strain rate. The southeast boundary of the PCFC is a spreading one. The principal tensile strain rate near the boundary is the largest (average: 1.51 x 10(-9)/a) and the principal tensile strain axis is basically consistent with the extending direction of the oceanic ridge; the northwest boundary of the PCFC is an underthrusting one. The principal compressive strain rate near the boundary is the largest (average: 0.75 x 10(-9)/a) and the principal compressive strain axis is basically coincident with the underthrusting direction of the PCFC. |
| WOS关键词 | ITRF96 ; MODEL |
| WOS研究方向 | Geochemistry & Geophysics |
| 语种 | 英语 |
| WOS记录号 | WOS:000245399900015 |
| 出版者 | SCIENCE CHINA PRESS |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/68080]  |
| 专题 | 中国科学院地质与地球物理研究所 |
| 通讯作者 | Li Yan-Xing |
| 作者单位 | 1.China Earthquake Adm, Crust Monitoring & Applicat Ctr 1, Tianjin 300180, Peoples R China 2.Chinese Acad Sci, Inst Geol & Geophys, Beijing 100029, Peoples R China 3.Chinese Acad Sci, Shanghai Astron Obser, Shanghai 200030, Peoples R China 4.Inst Equipment Technol & Command, Beijing 101416, Peoples R China |
| 推荐引用方式 GB/T 7714 | Li Yan-Xing,Zhang Jing-Hua,He Jian-Kun,et al. Current-day tectonic motion and intraplate deformation-strain field obtained from space geodesy in the Pacific Plate[J]. CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,2007,50(2):437-447. |
| APA | Li Yan-Xing.,Zhang Jing-Hua.,He Jian-Kun.,Li Jin-Ling.,Li Zhi.,...&Du Xue-Song.(2007).Current-day tectonic motion and intraplate deformation-strain field obtained from space geodesy in the Pacific Plate.CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,50(2),437-447. |
| MLA | Li Yan-Xing,et al."Current-day tectonic motion and intraplate deformation-strain field obtained from space geodesy in the Pacific Plate".CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION 50.2(2007):437-447. |
入库方式： OAI收割
来源：地质与地球物理研究所
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