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DOI | 10.1029/2021GL095313 |
Gravity Anomalies and Lithospheric Flexure in Western Yunnan, China, Deduced from a New Dense Gravimetry | |
Qian Zhao; Yawen She; Guangyu Fu | |
2021-09-28 | |
发表期刊 | Geophysical Research Letters |
出版年 | 2021 |
英文摘要 | We conducted a dense gravity/GNSS survey in western Yunnan, China, and improved the precision of Bouguer gravity anomalies (BGAs) and Free-air gravity anomalies (FGAs) by about 50 mGal. The BGAs showed that there was no significant BGAs abnormal change over the whole study area, and the density structure of BGAs inversion shows low-density regions at 20-40 km depth beneath Tengchong and its surrounding areas. Meanwhile, we calculated the loading ratio of the lithosphere in western Yunnan based on merged FGAs using the gravity admittance method. The resulting ratios show that the lithospheric flexure in this region results from a combination of the surface, the internal crust, and the mantle, with the internal crust dominating. Combined with other geophysical results, we speculate that the origin of Tengchong volcanoes is not large-scale mantle upwelling, but limited mantle material rising along the fracture in the process of material migration in the middle-lower crust. |
领域 | 气候变化 |
URL | 查看原文 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/338893 |
专题 | 气候变化 |
推荐引用方式 GB/T 7714 | Qian Zhao,Yawen She,Guangyu Fu. Gravity Anomalies and Lithospheric Flexure in Western Yunnan, China, Deduced from a New Dense Gravimetry[J]. Geophysical Research Letters,2021. |
APA | Qian Zhao,Yawen She,&Guangyu Fu.(2021).Gravity Anomalies and Lithospheric Flexure in Western Yunnan, China, Deduced from a New Dense Gravimetry.Geophysical Research Letters. |
MLA | Qian Zhao,et al."Gravity Anomalies and Lithospheric Flexure in Western Yunnan, China, Deduced from a New Dense Gravimetry".Geophysical Research Letters (2021). |
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