Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1029/2020GL092137 |
Biological cohesion as the architect of bed movement under wave action | |
Xindi Chen; Changkuan Zhang; Ian Townend; David M. Paterson; Zheng Gong; Qin Jiang; Qian Feng; Xiping Yu | |
2021-01-14 | |
发表期刊 | Geophysical Research Letters |
出版年 | 2021 |
英文摘要 | Cohesive extracellular polymeric substances (EPS) generated by microorganisms abundant on Earth are regarded as bed “stabilizers” increasing the erosion threshold in sedimentary systems. However, most observations of this phenomenon have been taken under steady flow conditions. In contrast, we present how EPS affect the bed movement under wave action, showing a destabilization of the system. We demonstrate a complex behavior of the bio‐sedimentary deposits, which encompasses liquefaction, mass motion, varying bed formations and erosion, depending on the amount of EPS present. Small quantities of EPS induce higher mobility of the sediments, liquefying an otherwise stable bed. Bed with larger quantities of EPS undergoes a synchronized mechanical oscillation. Our analysis clarifies how biological cohesion can potentially put coastal wetlands at risk by increasing their vulnerability to waves. These findings lead to a revised understanding of the different roles played by microbial life, and their importance as mediators of seabed mobility. |
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/311295 |
专题 | 气候变化 |
推荐引用方式 GB/T 7714 | Xindi Chen,Changkuan Zhang,Ian Townend,et al. Biological cohesion as the architect of bed movement under wave action[J]. Geophysical Research Letters,2021. |
APA | Xindi Chen.,Changkuan Zhang.,Ian Townend.,David M. Paterson.,Zheng Gong.,...&Xiping Yu.(2021).Biological cohesion as the architect of bed movement under wave action.Geophysical Research Letters. |
MLA | Xindi Chen,et al."Biological cohesion as the architect of bed movement under wave action".Geophysical Research Letters (2021). |
条目包含的文件 | 条目无相关文件。 |
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