Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2021GL092916 |
Coevolution of weathering front and water table | |
Wei Wang; Po Chen; Ken Dueker; Ye Zhang; En-jui Lee; Dawei Mu; Ian Keifer; Jianying Jiao | |
2021-10-11 | |
发表期刊 | Geophysical Research Letters
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出版年 | 2021 |
英文摘要 | Water is known to play an essential role in initiating and maintaining subsurface weathering reactions. However, the interaction between the weathering front and the water table is unclear and under intense debate. Here we present a high-fidelity, 3D image of a variably saturated weathering front beneath a granite terrain in the Laramie Range, Wyoming constructed using full-3D ambient-noise adjoint tomography and calibrated with data from an extensive drilling and hydraulic well testing effort. The imaged weathering front between saprolite and weathered bedrock is overall shallower than the water table under ridge, but deeper than water table under valleys. We propose that downward-advancing weathering front co-evolves with water table in a positive cycle that gradually flattens the water table, enhances the rate of groundwater drainage, and exposes underlying bedrock to weathering. As a result, we expect this cycle to become “sluggish” with time as water table gradient decreases. |
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/340106 |
专题 | 气候变化 |
推荐引用方式 GB/T 7714 | Wei Wang,Po Chen,Ken Dueker,et al. Coevolution of weathering front and water table[J]. Geophysical Research Letters,2021. |
APA | Wei Wang.,Po Chen.,Ken Dueker.,Ye Zhang.,En-jui Lee.,...&Jianying Jiao.(2021).Coevolution of weathering front and water table.Geophysical Research Letters. |
MLA | Wei Wang,et al."Coevolution of weathering front and water table".Geophysical Research Letters (2021). |
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