| Abstrak/Abstract |
Boyolali Regency is one of the regencies in Central Java that is often hit by drought during the dry season. In 2023, it was recorded that 11 out of 22 total sub-districts experienced drought and received clean water assistance from the Regional Disaster Management Agency (BPBD) of Boyolali Regency. The El Nino phenomenon that hit Indonesia exacerbated the impact of the drought. The study conducted aims to determine and analyze the results of the ability of Landsat 9 imagery in generating information into drought susceptibility parameters and to determine and analyze the spatio-temporal pattern of drought susceptibility in Boyolali Regency in the dry months (April - September) in 2023 based on parameters generated from Landsat 9 processing. The parameters used are NDVI, LST, NDWI, and land use/land cover. Applying a weighted tiered quantitative approach by applying scoring and weighting in each parameter. The study resulted in accuracy between the Landsat 9 image interpretation results and the field conditions using the confusion matrix table. Each parameter produces a different overall accuracy, but not much difference so that it still has a sufficient level of confidence. The resulting drought susceptibility map shows that April,
May, and June are dominated by low-moderate drought susceptibility, while July, August, and September are dominated by high-very high drought susceptibility. August is the peak month with a dominance of high drought susceptiblity covering 67741.05 Ha (63% of the total area of Boyolali Regency). The moderate to very high drought susceptibility level is located in the southern, eastern, and northern parts of the regency, while the very low-low drought susceptiblity level is located in the western part of Boyolali Regency. |
