Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2021GL094776 |
Saltwater intrusion intensifies coastal permafrost thaw | |
Julia A. Guimond; Aaron A. Mohammed; Michelle A. Walvoord; Victor F. Bense; Barret L. Kurylyk | |
2021-09-21 | |
发表期刊 | Geophysical Research Letters |
出版年 | 2021 |
英文摘要 | Surface effects of sea-level rise (SLR) in permafrost regions are obvious where increasingly iceless seas erode and inundate coastlines. SLR also drives saltwater intrusion, but subsurface impacts on permafrost-bound coastlines are unseen and unclear due to limited field data and the absence of models that include salinity-dependent groundwater flow with solute exclusion and freeze-thaw dynamics. Here, we develop a numerical model with the aforementioned processes to investigate climate change impacts on coastal permafrost. We find that SLR drives lateral permafrost thaw due to depressed freezing temperatures from saltwater intrusion, whereas warming drives top-down thaw. Under high SLR and low warming scenarios, thaw driven by SLR exceeds warming-driven thaw when normalized to the influenced surface area. Results highlight an overlooked feedback mechanism between SLR and permafrost thaw with potential implications for coastal infrastructure, ocean-aquifer interactions, and carbon mobilization. |
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/338830 |
专题 | 气候变化 |
推荐引用方式 GB/T 7714 | Julia A. Guimond,Aaron A. Mohammed,Michelle A. Walvoord,et al. Saltwater intrusion intensifies coastal permafrost thaw[J]. Geophysical Research Letters,2021. |
APA | Julia A. Guimond,Aaron A. Mohammed,Michelle A. Walvoord,Victor F. Bense,&Barret L. Kurylyk.(2021).Saltwater intrusion intensifies coastal permafrost thaw.Geophysical Research Letters. |
MLA | Julia A. Guimond,et al."Saltwater intrusion intensifies coastal permafrost thaw".Geophysical Research Letters (2021). |
条目包含的文件 | 条目无相关文件。 |
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