德国阿赫河谷洪水后山坡的持续活动构成潜在的滑坡坝危险

IF 6 3区 环境科学与生态学 Q1 ENVIRONMENTAL SCIENCES Environmental Sciences Europe Pub Date : 2024-09-09 DOI:10.1186/s12302-024-00985-8
Till Wenzel, Rainer Bell, Michael Dietze, Lothar Schrott
{"title":"德国阿赫河谷洪水后山坡的持续活动构成潜在的滑坡坝危险","authors":"Till Wenzel,&nbsp;Rainer Bell,&nbsp;Michael Dietze,&nbsp;Lothar Schrott","doi":"10.1186/s12302-024-00985-8","DOIUrl":null,"url":null,"abstract":"<div><h3>Background</h3><p>Extreme floods are known to severely reorganise inhabited landscapes by inundation, clogging, scouring and damaging infrastructure and lives. However, their post-event impacts are poorly understood, especially concerning coupled hillslope channel feedbacks such as the reactivation of slope instabilities connected to the river and that may be able to block it upon sudden failure. The July 2021 Ahr valley flood exemplified this ability of concurrent and sustained landscape reorganisation. Here, we study a retrogressive slope instability near the town of Müsch, in the upper Ahr valley using field mapping, repeat airborne laser scanning, electrical resistivity tomography and passive seismic monitoring to reveal the failure geometry, its mechanisms and transient activity.</p><h3>Results</h3><p>The old landslide developed in lower Devonian rocks. It is 100 m wide, 200 m long and approximately 15–20 m deep, which leads to a total volume of about 430,000 m<sup>3</sup>. This landslide was severely undercut by the 2021 flood with 7000 m<sup>3</sup> of material eroded at the landslide toe. The landslide has started to react. Given the narrow section of the river at this location, there is a potential landslide dam hazard. We modelled the inundation volumes and back fill times for different failure scenarios, ranging between 20,000 m<sup>3</sup> and 330,000 m<sup>3</sup> accumulating within 5 min and 20 h.</p><h3>Conclusions</h3><p>Our results imply a need to systematically screen flood impacted landscapes for sustained post-event hillslope activity that governs hillslope-channel coupling, driving both persistent sediment injection into the stream and sudden river blocking and subsequent damming.</p></div>","PeriodicalId":546,"journal":{"name":"Environmental Sciences Europe","volume":null,"pages":null},"PeriodicalIF":6.0000,"publicationDate":"2024-09-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1186/s12302-024-00985-8.pdf","citationCount":"0","resultStr":"{\"title\":\"Persistent post-flood hillslope activity posing a potential landslide dam hazard in the Ahr valley, Germany\",\"authors\":\"Till Wenzel,&nbsp;Rainer Bell,&nbsp;Michael Dietze,&nbsp;Lothar Schrott\",\"doi\":\"10.1186/s12302-024-00985-8\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><h3>Background</h3><p>Extreme floods are known to severely reorganise inhabited landscapes by inundation, clogging, scouring and damaging infrastructure and lives. However, their post-event impacts are poorly understood, especially concerning coupled hillslope channel feedbacks such as the reactivation of slope instabilities connected to the river and that may be able to block it upon sudden failure. The July 2021 Ahr valley flood exemplified this ability of concurrent and sustained landscape reorganisation. Here, we study a retrogressive slope instability near the town of Müsch, in the upper Ahr valley using field mapping, repeat airborne laser scanning, electrical resistivity tomography and passive seismic monitoring to reveal the failure geometry, its mechanisms and transient activity.</p><h3>Results</h3><p>The old landslide developed in lower Devonian rocks. It is 100 m wide, 200 m long and approximately 15–20 m deep, which leads to a total volume of about 430,000 m<sup>3</sup>. This landslide was severely undercut by the 2021 flood with 7000 m<sup>3</sup> of material eroded at the landslide toe. The landslide has started to react. Given the narrow section of the river at this location, there is a potential landslide dam hazard. We modelled the inundation volumes and back fill times for different failure scenarios, ranging between 20,000 m<sup>3</sup> and 330,000 m<sup>3</sup> accumulating within 5 min and 20 h.</p><h3>Conclusions</h3><p>Our results imply a need to systematically screen flood impacted landscapes for sustained post-event hillslope activity that governs hillslope-channel coupling, driving both persistent sediment injection into the stream and sudden river blocking and subsequent damming.</p></div>\",\"PeriodicalId\":546,\"journal\":{\"name\":\"Environmental Sciences Europe\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":6.0000,\"publicationDate\":\"2024-09-09\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"https://link.springer.com/content/pdf/10.1186/s12302-024-00985-8.pdf\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Environmental Sciences Europe\",\"FirstCategoryId\":\"93\",\"ListUrlMain\":\"https://link.springer.com/article/10.1186/s12302-024-00985-8\",\"RegionNum\":3,\"RegionCategory\":\"环境科学与生态学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"ENVIRONMENTAL SCIENCES\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Environmental Sciences Europe","FirstCategoryId":"93","ListUrlMain":"https://link.springer.com/article/10.1186/s12302-024-00985-8","RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"ENVIRONMENTAL SCIENCES","Score":null,"Total":0}
引用次数: 0

摘要

背景众所周知,特大洪水会淹没、堵塞、冲刷并破坏基础设施和生命,从而严重破坏居住区的景观。然而,人们对洪水过后的影响却知之甚少,尤其是山坡河道的耦合反馈作用,如与河流相连的斜坡不稳定性的重新激活,可能会在突然溃决时阻断河流。2021 年 7 月的阿赫河谷洪水就体现了这种并发和持续的地貌重组能力。在此,我们利用实地测绘、重复机载激光扫描、电阻率层析成像和被动地震监测技术,对阿赫尔河谷上游穆什镇附近的逆行斜坡不稳定性进行了研究,以揭示崩塌的几何形状、机理和瞬态活动。它宽 100 米,长 200 米,深约 15-20 米,总体积约为 43 万立方米。该滑坡在 2021 年的洪水中被严重冲毁,滑坡脚处有 7000 立方米的物质被侵蚀。滑坡已开始发生反应。由于该处河段狭窄,存在潜在的滑坡坝危险。我们模拟了不同溃决情况下的淹没量和回填时间,在 5 分钟和 20 小时内累积的淹没量和回填时间介于 20,000 立方米和 330,000 立方米之间。结论我们的研究结果表明,有必要对受洪水影响的地貌进行系统筛选,以确定洪水过后山坡的持续活动,这种活动会影响山坡与河道的耦合,导致泥沙持续注入河道,以及河道突然阻塞并随后筑坝。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

摘要图片

查看原文
分享 分享
微信好友 朋友圈 QQ好友 复制链接
本刊更多论文
Persistent post-flood hillslope activity posing a potential landslide dam hazard in the Ahr valley, Germany

Background

Extreme floods are known to severely reorganise inhabited landscapes by inundation, clogging, scouring and damaging infrastructure and lives. However, their post-event impacts are poorly understood, especially concerning coupled hillslope channel feedbacks such as the reactivation of slope instabilities connected to the river and that may be able to block it upon sudden failure. The July 2021 Ahr valley flood exemplified this ability of concurrent and sustained landscape reorganisation. Here, we study a retrogressive slope instability near the town of Müsch, in the upper Ahr valley using field mapping, repeat airborne laser scanning, electrical resistivity tomography and passive seismic monitoring to reveal the failure geometry, its mechanisms and transient activity.

Results

The old landslide developed in lower Devonian rocks. It is 100 m wide, 200 m long and approximately 15–20 m deep, which leads to a total volume of about 430,000 m3. This landslide was severely undercut by the 2021 flood with 7000 m3 of material eroded at the landslide toe. The landslide has started to react. Given the narrow section of the river at this location, there is a potential landslide dam hazard. We modelled the inundation volumes and back fill times for different failure scenarios, ranging between 20,000 m3 and 330,000 m3 accumulating within 5 min and 20 h.

Conclusions

Our results imply a need to systematically screen flood impacted landscapes for sustained post-event hillslope activity that governs hillslope-channel coupling, driving both persistent sediment injection into the stream and sudden river blocking and subsequent damming.

求助全文
通过发布文献求助,成功后即可免费获取论文全文。 去求助
来源期刊
Environmental Sciences Europe
Environmental Sciences Europe Environmental Science-Pollution
CiteScore
11.20
自引率
1.70%
发文量
110
审稿时长
13 weeks
期刊介绍: ESEU is an international journal, focusing primarily on Europe, with a broad scope covering all aspects of environmental sciences, including the main topic regulation. ESEU will discuss the entanglement between environmental sciences and regulation because, in recent years, there have been misunderstandings and even disagreement between stakeholders in these two areas. ESEU will help to improve the comprehension of issues between environmental sciences and regulation. ESEU will be an outlet from the German-speaking (DACH) countries to Europe and an inlet from Europe to the DACH countries regarding environmental sciences and regulation. Moreover, ESEU will facilitate the exchange of ideas and interaction between Europe and the DACH countries regarding environmental regulatory issues. Although Europe is at the center of ESEU, the journal will not exclude the rest of the world, because regulatory issues pertaining to environmental sciences can be fully seen only from a global perspective.
期刊最新文献
Unlocking the potential of data harmonization and FAIRness in chemical risk assessment: lessons from practice and insights for policy development Heavy metal contamination and potential health risks in upland rice-producing soils of rotational shifting cultivation in northern Thailand Microbial biopesticides are inhibited by honey bee royal jelly and in vitro larval diet COVID-19 pandemic microplastics environmental impacts predicted by deep random forest (DRF) predictive model Is environmental risk assessment possible with the alternatives to acute fish toxicity test? Case study with pharmaceuticals
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
0
微信
客服QQ
Book学术公众号 扫码关注我们
反馈
×
意见反馈
请填写您的意见或建议
请填写您的手机或邮箱
已复制链接
已复制链接
快去分享给好友吧!
我知道了
×
扫码分享
扫码分享
Book学术官方微信
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术
文献互助 智能选刊 最新文献 互助须知 联系我们:info@booksci.cn
Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。
Copyright © 2023 Book学术 All rights reserved.
ghs 京公网安备 11010802042870号 京ICP备2023020795号-1