The nocturnal occurrence of debris flows: evidence from western China
Abstract Debris flow is a major hazard in mountainous areas, with a suspected tendency to occur at night. However, there is a lack of direct evidence supporting the nocturnal occurrence of debris flows. This study confirms the nocturnal occurrence using two independent datasets. Dataset 1 includes 2...
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| Format: | Article |
| Language: | English |
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Nature Portfolio
2025-07-01
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| Series: | npj Natural Hazards |
| Online Access: | https://doi.org/10.1038/s44304-025-00114-2 |
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| author | Qian Chen Dongri Song Li Wei Hu Jiang Hui Tang Yongsheng Wang |
| author_facet | Qian Chen Dongri Song Li Wei Hu Jiang Hui Tang Yongsheng Wang |
| author_sort | Qian Chen |
| collection | DOAJ |
| description | Abstract Debris flow is a major hazard in mountainous areas, with a suspected tendency to occur at night. However, there is a lack of direct evidence supporting the nocturnal occurrence of debris flows. This study confirms the nocturnal occurrence using two independent datasets. Dataset 1 includes 295 post-disaster events across nine provinces in western China, showing 74.9% occurred at night. This supports the general impression that debris flows are more likely to occur at night across China. Dataset 2 consists of 286 debris-flow events from the field observation at Jiangjia Ravine (Yunnan, China) from 1965 to 2023. For the Dataset 2, the frequency of occurrence at night reaches 58.4% and is statistically significant at the 95% confidence interval. This long-term observational record provides direct evidence for the nocturnal occurrence of debris flows. This study provides solid evidence for the nocturnal occurrence of debris flows, aiding risk mitigation strategies. |
| format | Article |
| id | doaj-art-ff7a0f41de7c42fd8b4b6e262ba2858a |
| institution | Kabale University |
| issn | 2948-2100 |
| language | English |
| publishDate | 2025-07-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | npj Natural Hazards |
| spelling | doaj-art-ff7a0f41de7c42fd8b4b6e262ba2858a2025-08-20T03:42:40ZengNature Portfolionpj Natural Hazards2948-21002025-07-012111510.1038/s44304-025-00114-2The nocturnal occurrence of debris flows: evidence from western ChinaQian Chen0Dongri Song1Li Wei2Hu Jiang3Hui Tang4Yongsheng Wang5Institute of Mountain Hazards and Environment, Chinese Academy of SciencesInstitute of Mountain Hazards and Environment, Chinese Academy of SciencesInstitute of Mountain Hazards and Environment, Chinese Academy of SciencesInstitute of Mountain Hazards and Environment, Chinese Academy of SciencesEarth Surface Process Modelling, German Research Centre for Geosciences (GFZ)School of Civil Engineering, Lanzhou University of TechnologyAbstract Debris flow is a major hazard in mountainous areas, with a suspected tendency to occur at night. However, there is a lack of direct evidence supporting the nocturnal occurrence of debris flows. This study confirms the nocturnal occurrence using two independent datasets. Dataset 1 includes 295 post-disaster events across nine provinces in western China, showing 74.9% occurred at night. This supports the general impression that debris flows are more likely to occur at night across China. Dataset 2 consists of 286 debris-flow events from the field observation at Jiangjia Ravine (Yunnan, China) from 1965 to 2023. For the Dataset 2, the frequency of occurrence at night reaches 58.4% and is statistically significant at the 95% confidence interval. This long-term observational record provides direct evidence for the nocturnal occurrence of debris flows. This study provides solid evidence for the nocturnal occurrence of debris flows, aiding risk mitigation strategies.https://doi.org/10.1038/s44304-025-00114-2 |
| spellingShingle | Qian Chen Dongri Song Li Wei Hu Jiang Hui Tang Yongsheng Wang The nocturnal occurrence of debris flows: evidence from western China npj Natural Hazards |
| title | The nocturnal occurrence of debris flows: evidence from western China |
| title_full | The nocturnal occurrence of debris flows: evidence from western China |
| title_fullStr | The nocturnal occurrence of debris flows: evidence from western China |
| title_full_unstemmed | The nocturnal occurrence of debris flows: evidence from western China |
| title_short | The nocturnal occurrence of debris flows: evidence from western China |
| title_sort | nocturnal occurrence of debris flows evidence from western china |
| url | https://doi.org/10.1038/s44304-025-00114-2 |
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