Integral-rotation linear strain model and intraplate deformation-strain field of the Philippine Sea Plate

	Integral-rotation linear strain model and intraplate deformation-strain field of the Philippine Sea Plate
	Li Yan-Xing ; Zhang Jing-Hua ; He Jian-Kun ; Li Zhi ; Guo Liang-Qian ; Zhang Zhong-Fu ; Zhang Jun-Qing
刊名	CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION
	2006-09-01
卷号	49 期号:5 页码:1339-1346
关键词	Philippine Sea Plate integral rotation linear strain intraplate deformation strain field
ISSN号	0001-5733
文献子类	Article
英文摘要	In the paper, we create an integral-rotation linear strain model for the Philippine Sea Plate (PHIL) on the basis of the ITRE2000 velocities of 7 sites on the PHIL. Our study shows that the current-day tectonic movement of the PHIL is clockwise, which is consistent with the rotational direction estimated by NNR-NUVEL-1A, but quite different from the pole position and angular velocity from NNR-NUVEL-1A. Compared with the rigid motion model created by Sella et al., our model is capable to accurately describe the current-day tectonic movement and intraplate deformation of the PHIL. There is an intensive deformation-strain field within the PHIL. The plate undergoes consistent eastward deformation: the deformation rate is small near the central tectonic line and large close to the east and west boundaries; it is small at the south and north ends and large in the central part. The eastward deformation rate of the Mariana are is at a minimum value of 48.4 mm/a. The NS-trending deformation differs greatly in the eastern and western parts, which is very small in the eastern part and relatively large near the Manila trench in the western part; the northward deformation rate is 11.3 mm/a at the north end and the southward deformation rate is 29.3 mm/a at the south end. The principal strain field of the PHIL is divided into the eastern and western areas by the central tectonic line. In the eastern area, the tensile strain is very intensive, while the compressive strain is very weak. The principal tensile strain is in the proximate EW-direction. The principal tensile and compressive strain rates increase gradually from the central tectonic line to the east and the principal tensile strain rate reaches the highest value of 5.58 x 10(-8) /a near the southeast boundary (148 degrees E, 15 degrees N). In the western area, the principal compressive strain is strong, the principal tensile strain is relatively weak, and the principal compressive strain is in the NW-SE direction. From the central tectonic line to the west, the principal compressive and tensile strain rates increase gradually and the principal compressive strain rate reaches a maximum value of 5.71 x 10(-8)/a near the northwest boundary (122 degrees E, 23 degrees N). Closely related to the intraplate and surrounding tectonic settings, the spatial variation of the principal strain field of the PHIL is a reflection of the tectonic stress field.
WOS关键词	VELOCITIES ; AUSTRALIA
WOS研究方向	Geochemistry & Geophysics
语种	英语
出版者	SCIENCE PRESS
WOS记录号	WOS:000240860700013
内容类型	期刊论文
源URL	[http://ir.iggcas.ac.cn/handle/132A11/66946]
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.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. Integral-rotation linear strain model and intraplate deformation-strain field of the Philippine Sea Plate[J]. CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,2006,49(5):1339-1346.
APA	Li Yan-Xing.,Zhang Jing-Hua.,He Jian-Kun.,Li Zhi.,Guo Liang-Qian.,...&Zhang Jun-Qing.(2006).Integral-rotation linear strain model and intraplate deformation-strain field of the Philippine Sea Plate.CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION,49(5),1339-1346.
MLA	Li Yan-Xing,et al."Integral-rotation linear strain model and intraplate deformation-strain field of the Philippine Sea Plate".CHINESE JOURNAL OF GEOPHYSICS-CHINESE EDITION 49.5(2006):1339-1346.