Open AccessProjecting and managing hydrological drought in Indonesia
Author(s) -
Brigita Diaz Primadita,
Levina,
Rafiq Ahmad
Publication year - 2021
Publication title -
iop conference series. earth and environmental science
Language(s) - English
Resource type - Journals
eISSN - 1755-1307
pISSN - 1755-1315
DOI - 10.1088/1755-1315/724/1/012087
Subject(s) - environmental science , climate change , preparedness , drainage basin , water resource management , surface runoff , water resources , hydrology (agriculture) , climatology , geography , cartography , geology , ecology , oceanography , geotechnical engineering , political science , law , biology
Indonesia identifies as climate change hotspots and indicates to have increasing hydrological drought risk. The impact of hydrological drought is easier to analyze because only using river discharge directly affects by rain, which requires a long process and time. The impact of hydrological drought can be minimized using Disaster Risk Management (DRM) cycle. In this study, Standardized Runoff Index (SRI) was used as a quantitative index for the occurrence of hydrological drought and as a reference for phase change in DRM. This study consists of 3 parts: projecting monthly discharge until the year of 2045 using ensemble of seven Global Climate Models; projecting hydrological drought events using SRI; and suggesting six DRM stages for managing its impact. The study took case on Pawan River Basin, West Kalimantan. Kalimantan is predicted to be experienced more extreme dry climate in Indonesia. The potential for drought (Q80) is projected to be more severe in the range of January to July (-4% to -11%) and October (-3% to -5%) on the Pawan River Basin. DRM is divided into six phases: risk assessment, risk prevention, risk mitigation, preparedness for the occurrence, response to disaster and recovery.