Jurnal Penginderaan Jauh dan Pengolahan Data Citra Digital
Vol 5, (2008)

PENENTUAN NILAI AMBANG BATAS UNTUK POTENSI RAWAN BANJIR DARI DATA MTSAT DAN QMORPH (STUDI KASUS: BANJIR BENGAWAN SOLO 2007)

- Parwati (Pusat Pengembangan Pemanfaatan dan Teknologi Penginderaan Jauh, LAPAN)
- Suwarsono (Pusat Pengembangan Pemanfaatan dan Teknologi Penginderaan Jauh, LAPAN)
Fajar Yulianto (Pusat Pengembangan Pemanfaatan dan Teknologi Penginderaan Jauh, LAPAN)
Totok Suprapto (Pusat Pengembangan Pemanfaatan dan Teknologi Penginderaan Jauh, LAPAN)



Article Info

Publish Date
08 Dec 2010

Abstract

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

Copyrights © 2008