Potential flash flood dynamics in the humid tropics: insights from three basins in Sumatra
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Le résumé fourni par la source
Flash floods in humid tropical mountain basins are highly destructive hydrometeorological hazards, yet comparative studies that integrate geomorphological and hydrometeorological conditions remain limited. This study aims to identify and synthesize potential flash flood dynamics in three mountain basins in Sumatra, namely the Peusangan, Wampu, and Anai basins, through an integrated analysis of six key parameters: basin morphometry, high landslide susceptibility zones on steep slopes, land use related modeled runoff potential, event rainfall, antecedent wetness, and antecedent soil moisture. The results indicate that the three basins exhibit contrasting physical characteristics and hydrological response potential. The Wampu Basin has the highest drainage density, at 5.41 km/km 2 , but also the longest time of concentration, at 28.8 h, whereas the Anai Basin has the shortest time of concentration, at 5.8 h. Spatial linkage between susceptible slope areas and the river network is stronger in the Peusangan and Anai basins, whereas in the Wampu Basin, 47.0% of susceptible slope areas are located more than 500 m from the drainage network. Land use related modeled runoff potential is most evident in the Peusangan Basin, where the runoff coefficient increases from 0.34 to 0.36 and runoff volume increases from 82.67 to 87.91 million m 3 , while changes are more limited in the Wampu and Anai basins. From a hydrometeorological perspective, event rainfall estimates range from 8.1 to 13.4 mm/h, while 5 day antecedent rainfall reaches 114.4 to 186.5 mm. Satellite and reanalysis based antecedent soil moisture indicators suggest wet to high moisture conditions before the events, with near saturated and saturated classes present within the basins. Overall, potential flash flood dynamics in these humid tropical mountain basins can be interpreted through the combined information from preconditioning factors and triggering rainfall. The comparative framework developed in this study provides a basis for preliminary flash flood assessment and disaster risk reduction in data scarce humid tropical regions.
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Le contrôle bibliographique ouvert
DOI retrouvé dans Crossref DOI retrouvé ; titre concordant.
- Titre Crossref
- Potential flash flood dynamics in the humid tropics: insights from three basins in Sumatra
- Date Crossref
- 24/08/2026
- Éditeur
- Frontiers Media SA
- Type
- journal-article
Ce recoupement confirme des métadonnées liées au DOI. Il ne confirme ni la méthode ni les conclusions de l’étude, et il ne compte pas comme une seconde source scientifique indépendante.
Où se fait cette recherche
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Universitas Almuslim pays non établi dans la noticeUniversité ou école supérieure
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Khairun University pays non établi dans la noticeUniversité ou école supérieure
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National Research and Innovation Agency pays non établi dans la noticeOrganisme public
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IPB University Centre for Environmental Research pays non établi dans la noticeUniversité ou école supérieure
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Environmental and Natural Resources Management Master Program pays non établi dans la noticeInstitution
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Soil Science Program pays non établi dans la noticeInstitution
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Research Center for Climate and Atmosphere pays non établi dans la noticeStructure de recherche
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Environmental Science Program pays non établi dans la noticeInstitution
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Faculty of Mathematics and Natural Sciences Department of Geophysics and Meteorology pays non établi dans la noticeUniversité ou école supérieure
Universitas Almuslim, Khairun University et National Research and Innovation Agency, avec 6 autres affiliations.
Une affiliation ne permet pas de déduire la nationalité d’un auteur.