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＜departmental bulletin paper＞
Analysis of Critical Value of Rainfall to Induce Landslides and Debris-Flow in Mt. Bawakaraeng Caldera, South Sulawesi, Indonesia

Creator
Author PID
L004744
Creator Name
Hasnawir
Affiliation
Affiliation Name
Laboratory of Forest Conservation, Department of Forest and Forest Product sciences, Graduate School of Bioresource and Bioenvironmnetal Sciences, Faculty of Agriculture, Kyushu University
Author PID
K000520
Creator Name
Kubota, Tetsuya
久保田, 哲也
Affiliation
Affiliation Name
Laboratory of Forest Conservation, Department of Forest and Forest Product sciences, Graduate School of Bioresource and Bioenvironmnetal Sciences, Faculty of Agriculture, Kyushu University
九州大学農学研究院森林資源科学部門森林機能制御学
Language
English
Publisher
Faculty of Agriculture, Kyushu University
九州大学大学院農学研究院
Date
2008-10-28
Source Title
Journal of the Faculty of Agriculture, Kyushu University
Vol
53
Issue
2
First Page
523
Last Page
527
Publication Type
Version of Record
Access Rights
open access
Crossref DOI
https://doi.org/10.5109/12868
Related DOI
Journal of the Faculty of Agriculture, Kyushu University || 53(2) || p523-527
九州大学大学院農学研究院紀要 || 53(2) || p523-527
http://www.agr.kyushu-u.ac.jp/
Related URI
Journal of the Faculty of Agriculture, Kyushu University || 53(2) || p523-527
九州大学大学院農学研究院紀要 || 53(2) || p523-527
http://www.agr.kyushu-u.ac.jp/
Relation
Journal of the Faculty of Agriculture, Kyushu University || 53(2) || p523-527
九州大学大学院農学研究院紀要 || 53(2) || p523-527
http://www.agr.kyushu-u.ac.jp/

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Details

PISSN
0023-6152
NCID
AA00697606
Record ID
12868
Peer-Reviewed
Unrefereed
Subject Terms
Geo-Environment Science
地水環境学
ISSN
0023-6152
NCID
AA00697606
Notes
Mt. Bawakaraeng Caldera has been affected by tens of destructive landslide and debris-flow in recent years, triggered by rainfall episodes, which were responsible for many deaths and very important economic losses. Among the instability causes, meteorological factors are of primary importance in the Jeneberang Watershed, South Sulawesi namely the high recurrence rate of rainfall triggering landslides and debris-flow. The cumulative rainfall method is used to reconstruct both absolute and calibrated antecedent rainfalls associated with each major landslide and debris-flow event. The critical rainfall combination (amount-duration) responsible for each landslide and debris-flow event was assessed and rainfall threshold for landslide and debris-flow was calculated. Rainfall-triggered landslides and debris-flow in the study area are ruled by the function I=86.517D-0.408, where I is the rainfall intensity in mm/day and D is the duration of rainfall in days. They are related both to short duration precipitation events (1-3 days) with high average intensity (between 82 and 90 mm/day) and long-lasting rainfall episodes (1-5 months) with a lower intensity (between 10 and 15 mm/day).
Created Date 2009.04.22
Modified Date 2022.11.11

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