EARLY WARNING OF RAINFALL-INDUCED LANDSLIDES AND DEBRIS FLOWS ON MT. BAWAKARAENG, SOUTH SULAWESI,INDONESIA
| Main Author: | Hasnawir, Hasnawir |
|---|---|
| Format: | Article info "application/pdf" eJournal |
| Bahasa: | eng |
| Terbitan: |
Secretariat of Agency for Standardization of Environment and Forestry Instruments
, 2014
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| Subjects: | |
| Online Access: |
http://ejournal.forda-mof.org/ejournal-litbang/index.php/IJFR/article/view/14 http://ejournal.forda-mof.org/ejournal-litbang/index.php/IJFR/article/view/14/13 |
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<dc schemaLocation="http://www.openarchives.org/OAI/2.0/oai_dc/ http://www.openarchives.org/OAI/2.0/oai_dc.xsd"><title lang="en-US">EARLY WARNING OF RAINFALL-INDUCED LANDSLIDES AND DEBRIS FLOWS ON MT. BAWAKARAENG, SOUTH SULAWESI,INDONESIA</title><creator>Hasnawir, Hasnawir</creator><subject lang="en-US">Early warning; landslide and debris flow; rainfall thresholds; Mt. Bawakaraeng</subject><description lang="en-US">Rainfall thresholds that form the basis of the landslide warning systems now exist for a few areas in Indonesia. Based on analysis of historical data, threshold performance varies according to precipitation characteristics,  and threshold  exceed corresponds  to a given probability  of  landslide occurrence. Early warnings of landslides and debris flows that include specific information about affected areas, probability of landslide and debris flow occurrence, and expected timing are technically feasible as illustrated by a case study made on Mt. Bawakaraeng, South Sulawesi, Indonesia. Records from 1997 to 2007 of rainfall data and history of landslides and debris flows were collected from the Ministry of Public Works of the government of Indonesia. The threshold, as defined by the lower boundary of the points representing landslides and debris-triggering rainfall events, is expressed by the equations I= 41.85D-0,85  before the large scale landslide on March 26, 2004 and I = 37.71D-0,90after the large scale landslide, where I is the rainfall intensity (mm/hr) and D is the duration of rainfall (hr). According to empirical threshold analysis, the regression curve can be considered as a reliable rainfall intensity- duration threshold for the study area, above which, landslide or debris flow event may occur.</description><publisher lang="en-US">Secretariat of Agency for Standardization of Environment and Forestry Instruments</publisher><contributor lang="en-US"/><date>2014-05-12</date><type>Journal:Article</type><type>Other:info:eu-repo/semantics/publishedVersion</type><type>Other:</type><type>File:"application/pdf"</type><identifier>http://ejournal.forda-mof.org/ejournal-litbang/index.php/IJFR/article/view/14</identifier><identifier>10.20886/ijfr.2013.10.1.1-10</identifier><source lang="en-US">Indonesian Journal of Forestry Research; Vol 10, No 1 (2013): Journal of Forestry Research; 1-10</source><source>2406-8195</source><source>2355-7079</source><language>eng</language><relation>http://ejournal.forda-mof.org/ejournal-litbang/index.php/IJFR/article/view/14/13</relation><rights lang="en-US">Copyright (c) 2015 Indonesian Journal of Forestry Research</rights><recordID>--ejournal.forda-mof.org-ejournal-litbang-index.php-index-oai?verb=ListSets:article-14</recordID></dc>
|
| language |
eng |
| format |
Journal:Article Journal Other:info:eu-repo/semantics/publishedVersion Other Other: File:"application/pdf" File Journal:eJournal |
| author |
Hasnawir, Hasnawir |
| title |
EARLY WARNING OF RAINFALL-INDUCED LANDSLIDES AND DEBRIS FLOWS ON MT. BAWAKARAENG, SOUTH SULAWESI,INDONESIA |
| publisher |
Secretariat of Agency for Standardization of Environment and Forestry Instruments |
| publishDate |
2014 |
| topic |
Early warning landslide and debris flow rainfall thresholds Mt. Bawakaraeng |
| url |
http://ejournal.forda-mof.org/ejournal-litbang/index.php/IJFR/article/view/14 http://ejournal.forda-mof.org/ejournal-litbang/index.php/IJFR/article/view/14/13 |
| contents |
Rainfall thresholds that form the basis of the landslide warning systems now exist for a few areas in Indonesia. Based on analysis of historical data, threshold performance varies according to precipitation characteristics, and threshold exceed corresponds to a given probability of landslide occurrence. Early warnings of landslides and debris flows that include specific information about affected areas, probability of landslide and debris flow occurrence, and expected timing are technically feasible as illustrated by a case study made on Mt. Bawakaraeng, South Sulawesi, Indonesia. Records from 1997 to 2007 of rainfall data and history of landslides and debris flows were collected from the Ministry of Public Works of the government of Indonesia. The threshold, as defined by the lower boundary of the points representing landslides and debris-triggering rainfall events, is expressed by the equations I= 41.85D-0,85 before the large scale landslide on March 26, 2004 and I = 37.71D-0,90after the large scale landslide, where I is the rainfall intensity (mm/hr) and D is the duration of rainfall (hr). According to empirical threshold analysis, the regression curve can be considered as a reliable rainfall intensity- duration threshold for the study area, above which, landslide or debris flow event may occur. |
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