气候变化领域集成服务门户(CCPortal): Moho Interface Changes Beneath the Tibetan Plateau Based on GRACE Data

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DOI	10.1029/2020JB020605
	Moho Interface Changes Beneath the Tibetan Plateau Based on GRACE Data
	Rao W.; Sun W.
发表日期	2021
ISSN	21699313
卷号	126 期号:2
英文摘要	The Tibetan Plateau (TP) experiences complex mass transfer and redistribution due to the effects of the internal Earth dynamics and external climate change, such as land water changes, crustal uplift, surface denudation, and Moho interface changes. These phenomena are accompanied by changes in the gravity field and can be observed by the Gravity Recovery and Climate Experiment (GRACE). This study uses GRACE data to estimate the mass changes expressed by the equivalent water height (EWH) anomaly of the TP. In addition, we use ICESat data and hydrological models to estimate the effects of hydrological factors (lakes, glaciers, snow, soil moisture, and groundwater) and to separate them from the comprehensive mass field to obtain the tectonic information. We found that the total hydrological contribution to the average EWH change is −0.27 ± 0.21 cm/yr. We further estimated a mean rate of 0.78 ± 0.06 mm/yr by interpolating the Global Navigation Satellite System (GNSS) velocities. Furthermore, large amounts of sediments have been accumulated on and around the TP because of TP's denudation, and the denudation and sedimentation rate were estimated in our study. By removing the effects of the hydrological changes, surface movements, and glacial isostatic adjustment (GIA) from the GRACE, we obtained the EWH change of 0.18 ± 0.22 cm/yr contributed by the interior mass change. We estimated a mean Moho interface uplift rate of 4.20 ± 5.13 mm/yr, and the distribution of Moho interface changes indicates that the northern TP's Moho interface is upwelling and the southern interface is deepening. © 2020. American Geophysical Union. All Rights Reserved.
英文关键词	GLDAS; GRACE; ICESat; mass transfer; Moho interface; The Tibetan Plateau
语种	英语
来源期刊	Journal of Geophysical Research: Solid Earth
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/187340
作者单位	College of Earth and Planetary Sciences, University of Chinese Academy of Sciences, Beijing, China
推荐引用方式 GB/T 7714	Rao W.,Sun W.. Moho Interface Changes Beneath the Tibetan Plateau Based on GRACE Data[J],2021,126(2).
APA	Rao W.,&Sun W..(2021).Moho Interface Changes Beneath the Tibetan Plateau Based on GRACE Data.Journal of Geophysical Research: Solid Earth,126(2).
MLA	Rao W.,et al."Moho Interface Changes Beneath the Tibetan Plateau Based on GRACE Data".Journal of Geophysical Research: Solid Earth 126.2(2021).