气候变化领域集成服务门户(CCPortal): Uplift Mechanism of the Highest Mountains at Eastern Himalayan Syntaxis Revealed by In Situ Dense Gravimetry

CCPortal

DOI	10.1029/2020GL091208
	Uplift Mechanism of the Highest Mountains at Eastern Himalayan Syntaxis Revealed by In Situ Dense Gravimetry
	She Y.; Fu G.
发表日期	2020
ISSN	0094-8276
卷号	47 期号:22
英文摘要	Dense gravity surveys at 408 stations are built around eastern Himalayan syntaxis (EHS). Free-air gravity anomalies (FGAs) and Bouguer gravity anomalies (BGAs) are obtained based on the in situ data, while the modeled and observed FGAs are merged to increase the accuracy of the gravity anomalies. The variation ranges of FGAs and BGAs are −350–100 and −520 to −320 mGal, respectively. The density structures inversed by the BGAs represent a low-density zone below the Namche Barwa-Gyala Peri metamorphic massif. The Moho below the metamorphic massif is significantly shallower than the surrounding areas, and the variation range is between 45 and 75 km. A gravity admittance method is used to study the uplift mechanism of the highest mountains at the EHS. Our result shows that rapid uplift is primarily attributed to the upwelling of the mantle. ©2020. American Geophysical Union. All Rights Reserved.
英文关键词	Earth sciences; Geophysics; Admittance method; Bouguer gravity anomalies; Density structures; Gravity anomalies; Gravity survey; In-situ data; Low density zones; Ball grid arrays; contact metamorphism; gravimetry; gravity flow; mafic rock; metamorphic rock; Moho; mountain region; uplift; upwelling; Namjagbarwa Feng
语种	英语
来源期刊	Geophysical Research Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/169441
作者单位	Institute of Earthquake Forecasting, China Earthquake Administration, Beijing, China
推荐引用方式 GB/T 7714	She Y.,Fu G.. Uplift Mechanism of the Highest Mountains at Eastern Himalayan Syntaxis Revealed by In Situ Dense Gravimetry[J],2020,47(22).
APA	She Y.,&Fu G..(2020).Uplift Mechanism of the Highest Mountains at Eastern Himalayan Syntaxis Revealed by In Situ Dense Gravimetry.Geophysical Research Letters,47(22).
MLA	She Y.,et al."Uplift Mechanism of the Highest Mountains at Eastern Himalayan Syntaxis Revealed by In Situ Dense Gravimetry".Geophysical Research Letters 47.22(2020).