Preliminary analysis of the wildfire on March 15, 2024, and the following post-fire debris flows in Yajiang County, Sichuan, China

On March 15, 2024, a wildfire occurred in Yajiang County, Sichuan Province, China, burned an area of 278.8 km 2 and influenced 250 catchments in the burned area. On April 23 and May 10–11, 2024, two rainfall events struck the burned area, inducing 8 and 54 post-fire debris flows, respectively. This...

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Bibliographic Details
Published in:Landslides 2024-12, Vol.21 (12), p.3179-3189
Main Authors: He, Kun, Hu, Xiewen, Wu, Zhanglei, Zhong, Yutian, Zhou, Yonghao, Gong, Xueqiang, Luo, Gang
Format: Article
Language:English
Subjects:
Agriculture
Catchment area
Catchments
Civil Engineering
Debris flow
Detritus
Disasters
Earth and Environmental Science
Earth Sciences
Field investigations
Field tests
Fires
Flow mapping
Geography
Landslide News
Natural Hazards
Precipitation
Rainfall
Rainy season
Wet season
Wildfires
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Summary:On March 15, 2024, a wildfire occurred in Yajiang County, Sichuan Province, China, burned an area of 278.8 km 2 and influenced 250 catchments in the burned area. On April 23 and May 10–11, 2024, two rainfall events struck the burned area, inducing 8 and 54 post-fire debris flows, respectively. This news investigates the characteristics of the burned area, involving the burn severity mapping, and geometry analysis on the burned catchments. Then, the characteristics of the debris flows following the fire are unravelled based on preliminary field investigations. It is expected that the debris flows after the wildfire, particularly in the first rainy season, with the high susceptibility and low rainfall threshold, will attract researchers’ interest in monitoring and mitigating such unique debris flow disasters.
ISSN:1612-510X
1612-5118
DOI:10.1007/s10346-024-02364-z