SPATIAL ANALYSIS FOR METEOROLOGICAL DROUGHT HAZARD INDEX IN SOUTHEAST ASIA AND AUSTRALIA REGIONS
The Southeast Asia region and the Australian region have historically suffered losses due to drought. Information about drought can be a reference for drought mitigation to reduce drought losses. Meteorological drought index can be estimated using the Standardized Precipitation Index (SPI). SPI is a...
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| Format: | Final Project |
| Language: | Indonesia |
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| Online Access: | https://digilib.itb.ac.id/gdl/view/65665 |
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| Institution: | Institut Teknologi Bandung |
| Language: | Indonesia |
| Summary: | The Southeast Asia region and the Australian region have historically suffered losses due to drought. Information about drought can be a reference for drought mitigation to reduce drought losses. Meteorological drought index can be estimated using the Standardized Precipitation Index (SPI). SPI is a method that has many advantages and only requires rainfall data in its calculations.
By utilizing 2000-2021 monthly rainfall data from GPM_3IMERGM 0.10 x 0.10, SPI values can be calculated in Southeast Asia and Australia. In this study, a 3-month scale (SPI-3), 6-month scale (SPI-6), and 12-month scale (SPI-12) were used to quantify the drought index for 3 months, 6 months, and 12 months of drought. The drought index detects the frequency of drought and drought strength in an area. The drought index detects the frequency of drought and the strength of drought in an area. Drought frequency and drought strength can be used as parameters for calculating the multiscale Drought Hazard Index which called IBK to determine drought prone area within a certain period.
The results of the analysis of the IBK value show that as the drought period increases, the intensity of IBK in each grid is getting lighter. There is a pattern of IBK in the tropical rainforest climate zone (Af) in Southeast Asia. The mediterranean climate (Csb) located in southwest and southeastern Australia has the greatest very high hazard ratio in any drought period. Overall, Southeast Asia and Australia are high hazard areas for a 3-month drought. |
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