Exposure to Drought: Duration, Severity and Intensity (Java, Bali and Nusa Tenggara)

3rd International Seminar On Sciences "Sciences On Precision And Sustainable Agriculture"

Adhyani, N.L.^1 ; June, T.^2 ; Sopaheluwakan, A.^1

Meteorological Climatological and Geophysical Agency, Indonesia^1

Department of Geophysics and Meteorology, Faculty of Mathematics and Natural Sciences, Bogor Agricultural University, Indonesia^2

关键词: Drought indices;    Long duration;    Natural disasters;    Rainy seasons;    Spatial extent;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/58/1/012040/pdf
DOI  :  10.1088/1755-1315/58/1/012040

来源: IOP

【 摘 要 】

Occurrence of drought is a slow process lasted for a long time until the rainy season come. This natural disaster has broad and severe impact. This research was conducted to examine the level of severity and intensity of drought in Java, Bali and Nusa Tenggara using Standardized Precipitation Evapotranspiration Index (SPEI). SPEI is drought index used for quantifying drought occurrence, and can be used to analyze duration, severity and intensity. Drought is a climatological phenomenon which is difficult how to determine its onset, duration, magnitude, intensity, spatial extent, etc. Therefore, this information of exposure to drought could be describe the characteristics of drought events. To summarise the calculation, for 30 years (1985-2014) from 22 stations BMKG obtained the longest and strongest drought occurred at meteorology Serang - Banten, with long duration is 11 months and severity - 16.816 at October 2002 until August 2003. In one period of drought event, not always the longest it's mean the strongest.