What is the present-day tectonic uplift rate of the Tibetan Plateau?

IF 4.8 1区地球科学 Q1 GEOCHEMISTRY & GEOPHYSICS

Earth and Planetary Science Letters Pub Date : 2025-05-08 DOI:10.1016/j.epsl.2025.119389

Weilong Rao , Bin Liu , Tengfei Feng , Qiuyu Wang , He Tang

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引用次数: 0

Abstract

The Tibetan Plateau (TP) exhibits millimeter-scale vertical crustal deformation, detected through Global Positioning System (GPS) measurements. Concurrently, significant terrestrial water loss in High Mountain Asia contributes to plateau uplift via hydrological loading. After accounting for loading-induced uplift, it remains unclear whether the TP continues to experience significant tectonic uplift. To resolve this, a global hydrological mass change field was reconstructed using satellite observations and hydrological models, rather than relying on the Gravity Recovery and Climate Experiment (GRACE) data, to quantify vertical loading displacement rates for correcting GPS vertical velocities. Furthermore, a GPS imaging technique that incorporates the spatial structure function (SSF) was used to generate a tectonic deformation image of the TP. The results indicate that the TP is not experiencing uniform and significant tectonic uplift; instead, regional crustal subsidence is observed. The mean tectonic uplift rate is only 0.31 ± 0.32 mm/yr, which is smaller than the 0.46 ± 0.08 mm/yr contributed by loading and glacial isostatic adjustment (GIA).

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青藏高原现今的构造隆升速率是多少？

通过全球定位系统（GPS）测量，青藏高原（TP）表现出毫米尺度的垂直地壳变形。同时，亚洲高山地区大量的陆地水分流失通过水文负荷导致高原抬升。在考虑了载荷引起的隆升后，尚不清楚青藏高原是否会继续经历显著的构造隆升。为了解决这个问题，利用卫星观测和水文模型重建全球水文质量变化场，而不是依赖重力恢复和气候实验（GRACE）数据，量化垂直加载位移率，以校正GPS垂直速度。利用结合空间结构函数（SSF）的GPS成像技术，生成了青藏高原的构造变形图像。结果表明：青藏高原没有经历均匀而明显的构造隆升；相反，观察到区域地壳下沉。平均构造隆升速率仅为0.31±0.32 mm/yr，小于加载和冰川均衡调整（GIA）作用的0.46±0.08 mm/yr。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Earth and Planetary Science Letters 地学-地球化学与地球物理

CiteScore

10.30

自引率

5.70%

发文量

475

审稿时长

2.8 months

期刊介绍： Earth and Planetary Science Letters (EPSL) is a leading journal for researchers across the entire Earth and planetary sciences community. It publishes concise, exciting, high-impact articles ("Letters") of broad interest. Its focus is on physical and chemical processes, the evolution and general properties of the Earth and planets - from their deep interiors to their atmospheres. EPSL also includes a Frontiers section, featuring invited high-profile synthesis articles by leading experts on timely topics to bring cutting-edge research to the wider community.