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ORIGINAL RESEARCH article
Front. Earth Sci.
Sec. Geohazards and Georisks
Volume 12 - 2024 |
doi: 10.3389/feart.2024.1438421
This article is part of the Research Topic Monitoring, Early Warning and Mitigation of Natural and Engineered Slopes – Volume IV View all 9 articles
The Disaster-causing Factors of the flash floods for the July 20th Extreme Rainstorm in Henan, China
Provisionally accepted- 1 China Institute of Water Resources and Hydropower Research, Beijing, Beijing Municipality, China
- 2 School of Geography and Environmental Sciences, Tianjin Normal University, Tianjin, China
Global warming has accelerated the frequency and intensity of extreme rainfall events in mountainous areas. Coupled with their vulnerable environment and the impact of intensive human activities, along with the complex and variable causes of flash floods, this exacerbates casualties and property losses.Therefore, this article investigates the triggering mechanisms and potential disaster-causing factors of the extreme "720" flood in the WZD-HGZ basin of Henan. The research results indicate that the flash floods in the WZD-HGZ basin were primarily caused by prolonged heavy rainfall, combined with the complex terrain, obstructive backwater, and human activities. The amplification of the flood mainly occurred in three stages: concentrated runoff from multiple channels, water obstruction caused by the successive collapse of roadbeds and bridges, and the generation of backwater. Besides, due to the lack of basic flood prevention awareness, unclear warnings, and inadequate guidance, the transition chain from issuing warnings to taking action was disrupted. The aforementioned research findings provide references for current flash flood disaster prevention efforts.
Keywords: flash flood, Disaster-causing factors, Mechanism, Henan, Extreme rainstormFlash flood
Received: 26 May 2024; Accepted: 20 Jun 2024.
Copyright: © 2024 He, Li, Yao, Wang, Luo and Meihong. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
* Correspondence:
Bingshun He, China Institute of Water Resources and Hydropower Research, Beijing, 100038, Beijing Municipality, China
Changzhi Li, China Institute of Water Resources and Hydropower Research, Beijing, 100038, Beijing Municipality, China
Qiuling Yao, China Institute of Water Resources and Hydropower Research, Beijing, 100038, Beijing Municipality, China
Han Wang, China Institute of Water Resources and Hydropower Research, Beijing, 100038, Beijing Municipality, China
Lanyang Luo, School of Geography and Environmental Sciences, Tianjin Normal University, Tianjin, China
Ma Meihong, School of Geography and Environmental Sciences, Tianjin Normal University, Tianjin, China
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