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| DOI | 10.1002/esp.5855 |
| Quantifying landscape change following catastrophic dam failures in Edenville and Sanford, Michigan, USA | |
| 发表日期 | 2024 |
| ISSN | 0197-9337 |
| EISSN | 1096-9837 |
| 英文摘要 | Dam failures due to changing hydroclimate and ageing infrastructure pose a significant threat to downstream river systems and communities. The detailed geomorphic effects of catastrophic dam failures are not well known because of a lack of high-resolution topographic data before and after failures. On 19 May 2020, the 17-m-tall Edenville and 11-m-tall Sanford dams near Midland, Michigan, USA, failed as a result of significant rainfall over the preceding 2 days. We analysed the geomorphic impacts of these failures using a pre-failure airborne lidar dataset and three uncrewed aerial vehicle (UAV)-based lidar surveys collected 2 weeks, 3 months and 11 months after failure. Our survey following the dam failure revealed 47 100 +/- 11 900 m3 of net floodplain erosion and 17 300 +/- 4200 m3 of net deposition downstream of the Edenville and Sanford dam breaches, respectively. Over the year following failure, most geomorphic change was confined to new knickpoints migrating slowly through underlying glacial till substrate, with little change to riverbanks or surrounding floodplains. A lack of impounded reservoir sediment and antecedent downstream topography, including valley width and the location of the breaches relative to the river below the dams, contributed to relatively modest geomorphic changes despite the magnitude of water released. We provide insight into how landscapes are shaped by catastrophic floods, which are likely to become more common with ageing dams and a changing hydroclimate. In May 2020, two dams failed near the city of Midland in central Michigan, USA. Using a lidar scan before the failure and repeat lidar scans after, we quantified geomorphic changes due to an outburst flood from failed infrastructure. image |
| 英文关键词 | dam failure; landscape change; outburst floods; repeat lidar; river flooding |
| 语种 | 英语 |
| WOS研究方向 | Physical Geography ; Geology |
| WOS类目 | Geography, Physical ; Geosciences, Multidisciplinary |
| WOS记录号 | WOS:001208678500001 |
| 来源期刊 | EARTH SURFACE PROCESSES AND LANDFORMS
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| 文献类型 | 期刊论文 |
| 条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/301424 |
| 作者单位 | Indiana University System; Indiana University Bloomington; California Institute of Technology; California Institute of Technology; University of Michigan System; University of Michigan |
| 推荐引用方式 GB/T 7714 | . Quantifying landscape change following catastrophic dam failures in Edenville and Sanford, Michigan, USA[J],2024. |
| APA | (2024).Quantifying landscape change following catastrophic dam failures in Edenville and Sanford, Michigan, USA.EARTH SURFACE PROCESSES AND LANDFORMS. |
| MLA | "Quantifying landscape change following catastrophic dam failures in Edenville and Sanford, Michigan, USA".EARTH SURFACE PROCESSES AND LANDFORMS (2024). |
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