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ORIGINAL RESEARCH article

Front. Earth Sci.
Sec. Geohazards and Georisks
Volume 12 - 2024 | doi: 10.3389/feart.2024.1420425
This article is part of the Research Topic Risk Assessment and Resilience of Extreme Weather-Induced Disasters View all 7 articles

Construction and Preliminary Analysis of Landslide Database Triggered by Heavy Storm in the Parallel Rangevalley Area of Western Chongqing, China, on June 8, 2017

Provisionally accepted
Jielin Liu Jielin Liu Chong Xu Chong Xu *
  • National Institute of Natural Hazards, Ministry of Emergency Management (China), Beijing, China

The final, formatted version of the article will be published soon.

    On June 8, 2017, a heavy storm struck the parallel ridge-valley area of western Chongqing, resulting in serious urban waterlogging and landslides, which led to severe impacts on infrastructure and damage to private property. Based on highresolution optical satellite images, this paper comprehensively identified the landslides triggered by this rainfall event, and established a corresponding landslide database. The database takes the landslide area density and landslide number density as the main indicators, and combines the lithology characteristics to analyze the spatial distribution of landslides. The results show that this event triggered 487 landslides in an area of 583 km 2 , involving an area of about 485,587 m 2 , accounting for about 0.083 % of the study area. The average landslide number density is 0.84 num/km 2 , the highest value of landslide number density can reach 55.6 num/km 2 , and the maximum landslide area density is about 6.4 %. These landslides are mainly distributed in the southern foothills of the Huaying Mountain, especially in the weak interlayer lithology area. The database provides scientific reference and data support for exploring the mechanism of landslides in western Chongqing and reducing the risk of landslide disasters under the background of rapid development of local society.

    Keywords: Rainfall-triggered landslides, database, parallel range-valley area, Satellite Imagery, Western Chongqing

    Received: 20 Apr 2024; Accepted: 30 Jul 2024.

    Copyright: © 2024 Liu and Xu. 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: Chong Xu, National Institute of Natural Hazards, Ministry of Emergency Management (China), Beijing, China

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