| Title |
Development of Drought Vulnerability Index Using Trend Analysis |
| Authors |
양정석(Yang, Jeong-Seok) ; 박진혁(Park, Jin-Hyuck) ; 김남기(Kim, Nam-Ki) |
| DOI |
https://doi.org/10.12652/Ksce.2012.32.3B.185 |
| Keywords |
가뭄;취약성지수;경향성 검정 drought;vulnerability index;trend test |
| Abstract |
Drought vulnerability index was developed by selecting drought-related indicators with trend test. Study areas were determined by considering the weir locations from the four major rivers restoration project in Nakdong and Geum river watersheds. Ten indicators were selected and they were categorized into three groups, water resources, precipitation pattern, and social aspects. Annual average surface water level, annual minimum surface water level, annual average groundwater level, and annual minimum groundwater level data sets were collected for water resources aspects. The number of non-rainy days, rainfall concentration ratio, and rainfall deviation were considered for precipitation pattern category. The amount of water available per capita, financial soundness for water resources, and water usage equity were related to social aspects. Mann-Kendall, Hotelling-Pabst, and Sen trend tests were performed for the ten indicator data sets and the results were scored for the drought vulnerability index. The results shows Gumi, Sangjoo, and Hapcheon weirs are relatively vulnerable to drought. The indices were relatively low for the regions in Geum river watershed compared to those in Nakdong river watershed. |