气候变化领域集成服务门户(CCPortal): The vertical velocity field of the Tibetan Plateau and its surrounding areas derived from GPS and surface mass loading models

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DOI	10.1016/j.epsl.2023.118107
	The vertical velocity field of the Tibetan Plateau and its surrounding areas derived from GPS and surface mass loading models
	Zhao, Qian; Chen, Qiang; van Dam, Tonie; She, Yawen; Wu, Weiwei
发表日期	2023
ISSN	0012-821X
EISSN	1385-013X
卷号	609
英文摘要	Obtaining a precise velocity field of the Earth's surface is critical for probing Earth's tectonic movements. In this contribution we construct a precise vertical velocity field with high-spatial resolution for the Tibetan Plateau (TP) and its surrounding areas using both 113 continuous and 969 campaign GPS time series over the period 2008 to 2019. Specifically, we compared the statistical distribution of residual continuous GPS time series to find the optimal regional surface mass loading (SML) models. The optimal modeled nontectonic displacements were used to correct these campaign GPS time series to reduce their scatter and accordingly improve the precision of the uplift rate estimates. The results showed that we could reduce the root mean square (RMS) on the vertical coordinate time series by more than 75% of the campaign GPS stations. We computed and removed vertical deformation due to horizontal strain rates obtained from GPS time series, and discussed dynamic sources (mantle dynamic topography, isostatic adjustment, and flexural loading) that drive the residual vertical tectonic motion. The study presents the most recent surface kinematic constraints for comprehending the dynamic sources of tectonic uplift or subsidence between and within tectonic units. Plain Language Summary: Movements of the Tibetan Plateau (TP) have a profound impact on adjacent areas. We collected all available GPS data to determine a precise vertical velocity field with high-spatial resolution. We make use of optimal surface mass loading (SML) models to improve estimation accuracy of campaign GPS stations, including an estimate of the vertical movement caused by the horizontal tectonic motions. We combine geological and geophysical data with our vertical velocity field to understand the dynamic sources of uplift or subsidence between and within tectonic units of the TP. (c) 2023 Elsevier B.V. All rights reserved.
关键词	Tibet Plateau nontectonic deformation surface mass loading vertical GPS velocity dynamic source
英文关键词	CRUSTAL DEFORMATION; BENEATH EASTERN; SEA-LEVEL; COLLISION; GRACE; LITHOSPHERE; TECTONICS; ISOSTASY; GRAVITY; MARGIN
WOS研究方向	Geochemistry & Geophysics
WOS记录号	WOS:000955688700001
来源期刊	EARTH AND PLANETARY SCIENCE LETTERS
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/283627
作者单位	China Earthquake Administration; Institute of Earthquake Forecasting, CEA; University of Luxembourg; Utah System of Higher Education; University of Utah
推荐引用方式 GB/T 7714	Zhao, Qian,Chen, Qiang,van Dam, Tonie,et al. The vertical velocity field of the Tibetan Plateau and its surrounding areas derived from GPS and surface mass loading models[J],2023,609.
APA	Zhao, Qian,Chen, Qiang,van Dam, Tonie,She, Yawen,&Wu, Weiwei.(2023).The vertical velocity field of the Tibetan Plateau and its surrounding areas derived from GPS and surface mass loading models.EARTH AND PLANETARY SCIENCE LETTERS,609.
MLA	Zhao, Qian,et al."The vertical velocity field of the Tibetan Plateau and its surrounding areas derived from GPS and surface mass loading models".EARTH AND PLANETARY SCIENCE LETTERS 609(2023).