Hydrological Drought Analysis using Streamflow Drought Index (SDI) in Ethiopia
Drought is a natural disaster that has impacts on society, the environment, and the ecosystem. Ethiopia faced many horrible severe drought events in the last few decades. Even though there are some drought-related studies in the country, most of the investigations were focused on meteorological drou...
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| Format: | Article |
| Language: | English |
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Wiley
2022-01-01
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| Series: | Advances in Meteorology |
| Online Access: | http://dx.doi.org/10.1155/2022/7067951 |
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| author | Kassa Abera Tareke Admasu Gebeyehu Awoke |
| author_facet | Kassa Abera Tareke Admasu Gebeyehu Awoke |
| author_sort | Kassa Abera Tareke |
| collection | DOAJ |
| description | Drought is a natural disaster that has impacts on society, the environment, and the ecosystem. Ethiopia faced many horrible severe drought events in the last few decades. Even though there are some drought-related studies in the country, most of the investigations were focused on meteorological drought analysis. This study was focused on hydrological drought analysis in Ethiopia using the streamflow drought index (SDI). The main objective was to identify drought-prone areas and severe drought events years. Streamflow data were collected from 34 stations to analyze SDI in seasonal (3-month) and annual (12-month) timescales. The analysis implies that seasonal time scale (3-month) hydrological drought has a high frequency of occurrence but short duration, whereas annual (12-month) analysis has a low frequency with a large magnitude. The overall result shows that 1984/85, 1986/87, 2002/03, and 2010/11 were the most severe and extreme drought years in all river basins. The 1980s were found severe and extreme drought years in which most hydrological drought events occurred in the country. The spatial analysis shows that Tekeze, Abbay, and Baro river basins have similar characters; Awash and Rift Valley River basins show relatively the same character, and Genale Dawa and Wabishebele river basins have a similar character. But Omo Gibe River basin has a unique character in which the severe drought occurred in a different year of other river basins. |
| format | Article |
| id | doaj-art-c4d8cd40f08e492c96b13a24a1a47de4 |
| institution | Kabale University |
| issn | 1687-9317 |
| language | English |
| publishDate | 2022-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advances in Meteorology |
| spelling | doaj-art-c4d8cd40f08e492c96b13a24a1a47de42025-02-03T05:53:40ZengWileyAdvances in Meteorology1687-93172022-01-01202210.1155/2022/7067951Hydrological Drought Analysis using Streamflow Drought Index (SDI) in EthiopiaKassa Abera Tareke0Admasu Gebeyehu Awoke1Department of Hydraulic and Water Resources EngineeringSchool of Civil and Environmental EngineeringDrought is a natural disaster that has impacts on society, the environment, and the ecosystem. Ethiopia faced many horrible severe drought events in the last few decades. Even though there are some drought-related studies in the country, most of the investigations were focused on meteorological drought analysis. This study was focused on hydrological drought analysis in Ethiopia using the streamflow drought index (SDI). The main objective was to identify drought-prone areas and severe drought events years. Streamflow data were collected from 34 stations to analyze SDI in seasonal (3-month) and annual (12-month) timescales. The analysis implies that seasonal time scale (3-month) hydrological drought has a high frequency of occurrence but short duration, whereas annual (12-month) analysis has a low frequency with a large magnitude. The overall result shows that 1984/85, 1986/87, 2002/03, and 2010/11 were the most severe and extreme drought years in all river basins. The 1980s were found severe and extreme drought years in which most hydrological drought events occurred in the country. The spatial analysis shows that Tekeze, Abbay, and Baro river basins have similar characters; Awash and Rift Valley River basins show relatively the same character, and Genale Dawa and Wabishebele river basins have a similar character. But Omo Gibe River basin has a unique character in which the severe drought occurred in a different year of other river basins.http://dx.doi.org/10.1155/2022/7067951 |
| spellingShingle | Kassa Abera Tareke Admasu Gebeyehu Awoke Hydrological Drought Analysis using Streamflow Drought Index (SDI) in Ethiopia Advances in Meteorology |
| title | Hydrological Drought Analysis using Streamflow Drought Index (SDI) in Ethiopia |
| title_full | Hydrological Drought Analysis using Streamflow Drought Index (SDI) in Ethiopia |
| title_fullStr | Hydrological Drought Analysis using Streamflow Drought Index (SDI) in Ethiopia |
| title_full_unstemmed | Hydrological Drought Analysis using Streamflow Drought Index (SDI) in Ethiopia |
| title_short | Hydrological Drought Analysis using Streamflow Drought Index (SDI) in Ethiopia |
| title_sort | hydrological drought analysis using streamflow drought index sdi in ethiopia |
| url | http://dx.doi.org/10.1155/2022/7067951 |
| work_keys_str_mv | AT kassaaberatareke hydrologicaldroughtanalysisusingstreamflowdroughtindexsdiinethiopia AT admasugebeyehuawoke hydrologicaldroughtanalysisusingstreamflowdroughtindexsdiinethiopia |