PENENTUAN NILAI AMBANG BATAS UNTUK POTENSI RAWAN BANJIR DARI DATA MTSAT DAN QMORPH (STUDI KASUS: BANJIR BENGAWAN SOLO 2007)
| Main Authors: | Parwati, -, Suwarsono, -, Yulianto, Fajar, Suprapto, Totok |
|---|---|
| Format: | Article info application/pdf eJournal |
| Bahasa: | eng |
| Terbitan: |
Indonesian National Institute of Aeronautics and Space (LAPAN)
, 2010
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| Online Access: |
http://jurnal.lapan.go.id/index.php/jurnal_inderaja/article/view/1169 http://jurnal.lapan.go.id/index.php/jurnal_inderaja/article/view/1169/1047 |
Daftar Isi:
- The relationship between the cloud top temperature from MTSAT-1R and the rainfall from QMorph data in Bengawan Solo water catchment area have been analyzed in this research. The analysis was done using data during 21 – 30 December, 2007 (00 – 23 UTC) for 240 data sets. The result shows that the cloud top temperature which have been potential to be high rain is around 195° – 235° K, whereas the cloud top temperature is greater than 235° K related to the low rainfall. Meanwhile, there was a logarithmic relationship between the rainfall from QMorph data and the cloud top temperature of MTSAT-1R (infrared 1 channal) with the coefficient correlation 0.78. The threshold of the cloud top temperature for the flash flood in Bengawan Solo is lower than 215° K at least lasting for 4 days. The heavy rainfall which occured intensively could be a triggered for the flood disaster around Bengawan Solo water catchment area. Key word: Brigthness temperature of cloud, Rainfall, MTSAT, QMorph, Correlation