ANALISA KARAKTERISTIK CURAH HUJAN DAN KURVA INTENSITAS DURASI FREKUENSI (IDF) DI PROPINSI LAMPUNG
ABSTRACT: This research was
done to analyze the characteristic of rainfall that agreed with the short
termduration of rainfall data at BMG Maritim Lampung station, BMG Raden Inten
II Bandar Lampungstation, Masgar Tegineneng Climatology station and Kotabumi
Geophysical station. From theresults of research will be made intensity
duration frequency (IDF) curve based on: (1) Analysis offrequency rain
distribution of short term rainfall data from each stations. (2) Analysis of
rainfallintensity for every rain duration in particular when reuses Van breen
intensity method and Hasperder weduwen intensity method then doing calculate
approach of rainfall intensity using leastsquare are Talbot, Sherman and
Ishiguro formulas, it means to determine the equality of rainfallintensity to
program region. From the result of research could be summarized as follows ;(1)
Thedata of rainfall used is short term rainfall data (5, 10, 15, 30, 45, 60,
120 minutes, 3 hours, 6hours and 12 hours) and as annual maximum series, (2)
Type of distribution that appropriate withall observation station is Log
Pearson Type III Distribution, (3) The rainfall intensity of VanBreen method
used Talbot equality, it is used as reference to form IDF curve. The
intensityequality was valid only to data of rain in all observation year at
every station. (4) The IDF Curveshowed that high rainfall intensity ran in
short duration (5) the IDF curve can be used fordetermine planning flood by
using rational method.
Penulis: Susilowati A, Dyah
Indriana Kusumastuti
Kode Jurnal: jptsipildd100163
