Drought assessment in the Dongliao River basin: traditional approaches vs. generalized drought assessment index based on water resources systems
Drought is firstly a resource issue, and with its development it evolves into a disaster issue. Drought events usually occur in a determinate but a random manner. Drought has become one of the major factors to affect sustainable socioeconomic development. In this paper, we propose the generalized dr...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
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Copernicus Publications
2015-08-01
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| Series: | Natural Hazards and Earth System Sciences |
| Online Access: | http://www.nat-hazards-earth-syst-sci.net/15/1889/2015/nhess-15-1889-2015.pdf |
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| author | B. S. Weng D. H. Yan H. Wang J. H. Liu Z. Y. Yang T. L. Qin J. Yin |
| author_facet | B. S. Weng D. H. Yan H. Wang J. H. Liu Z. Y. Yang T. L. Qin J. Yin |
| author_sort | B. S. Weng |
| collection | DOAJ |
| description | Drought is firstly a resource issue, and with its development it evolves
into a disaster issue. Drought events usually occur in a determinate but a
random manner. Drought has become one of the major factors to affect
sustainable socioeconomic development. In this paper, we propose the
generalized drought assessment index (GDAI) based on water resources systems
for assessing drought events. The GDAI considers water supply and water
demand using a distributed hydrological model. We demonstrate the use of the
proposed index in the Dongliao River basin in northeastern China. The
results simulated by the GDAI are compared to observed drought disaster
records in the Dongliao River basin. In addition, the temporal distribution of
drought events and the spatial distribution of drought frequency from the
GDAI are compared with the traditional approaches in general (i.e., standard
precipitation index, Palmer drought severity index and rate of water deficit
index). Then, generalized drought times, generalized drought duration, and
generalized drought severity were calculated by theory of runs. Application
of said runs at various drought levels (i.e., mild drought, moderate drought,
severe drought, and extreme drought) during the period 1960–2010 shows that
the centers of gravity of them all distribute in the middle reaches of
Dongliao River basin, and change with time. The proposed methodology may
help water managers in water-stressed regions to quantify the impact of
drought, and consequently, to make decisions for coping with drought. |
| first_indexed | 2024-12-23T05:33:04Z |
| format | Article |
| id | doaj.art-54b7b155b0eb44669aefddd208a64309 |
| institution | Directory Open Access Journal |
| issn | 1561-8633 1684-9981 |
| language | English |
| last_indexed | 2024-12-23T05:33:04Z |
| publishDate | 2015-08-01 |
| publisher | Copernicus Publications |
| record_format | Article |
| series | Natural Hazards and Earth System Sciences |
| spelling | doaj.art-54b7b155b0eb44669aefddd208a643092022-12-21T17:58:25ZengCopernicus PublicationsNatural Hazards and Earth System Sciences1561-86331684-99812015-08-011581889190610.5194/nhess-15-1889-2015Drought assessment in the Dongliao River basin: traditional approaches vs. generalized drought assessment index based on water resources systemsB. S. Weng0D. H. Yan1H. Wang2J. H. Liu3Z. Y. Yang4T. L. Qin5J. Yin6State Key Laboratory of Simulation and Regulation of Water Cycle in River Basin, China Institute of Water Resources and Hydropower Research, 100038 Beijing, ChinaState Key Laboratory of Simulation and Regulation of Water Cycle in River Basin, China Institute of Water Resources and Hydropower Research, 100038 Beijing, ChinaState Key Laboratory of Simulation and Regulation of Water Cycle in River Basin, China Institute of Water Resources and Hydropower Research, 100038 Beijing, ChinaState Key Laboratory of Simulation and Regulation of Water Cycle in River Basin, China Institute of Water Resources and Hydropower Research, 100038 Beijing, ChinaState Key Laboratory of Simulation and Regulation of Water Cycle in River Basin, China Institute of Water Resources and Hydropower Research, 100038 Beijing, ChinaState Key Laboratory of Simulation and Regulation of Water Cycle in River Basin, China Institute of Water Resources and Hydropower Research, 100038 Beijing, ChinaState Key Laboratory of Simulation and Regulation of Water Cycle in River Basin, China Institute of Water Resources and Hydropower Research, 100038 Beijing, ChinaDrought is firstly a resource issue, and with its development it evolves into a disaster issue. Drought events usually occur in a determinate but a random manner. Drought has become one of the major factors to affect sustainable socioeconomic development. In this paper, we propose the generalized drought assessment index (GDAI) based on water resources systems for assessing drought events. The GDAI considers water supply and water demand using a distributed hydrological model. We demonstrate the use of the proposed index in the Dongliao River basin in northeastern China. The results simulated by the GDAI are compared to observed drought disaster records in the Dongliao River basin. In addition, the temporal distribution of drought events and the spatial distribution of drought frequency from the GDAI are compared with the traditional approaches in general (i.e., standard precipitation index, Palmer drought severity index and rate of water deficit index). Then, generalized drought times, generalized drought duration, and generalized drought severity were calculated by theory of runs. Application of said runs at various drought levels (i.e., mild drought, moderate drought, severe drought, and extreme drought) during the period 1960–2010 shows that the centers of gravity of them all distribute in the middle reaches of Dongliao River basin, and change with time. The proposed methodology may help water managers in water-stressed regions to quantify the impact of drought, and consequently, to make decisions for coping with drought.http://www.nat-hazards-earth-syst-sci.net/15/1889/2015/nhess-15-1889-2015.pdf |
| spellingShingle | B. S. Weng D. H. Yan H. Wang J. H. Liu Z. Y. Yang T. L. Qin J. Yin Drought assessment in the Dongliao River basin: traditional approaches vs. generalized drought assessment index based on water resources systems Natural Hazards and Earth System Sciences |
| title | Drought assessment in the Dongliao River basin: traditional approaches vs. generalized drought assessment index based on water resources systems |
| title_full | Drought assessment in the Dongliao River basin: traditional approaches vs. generalized drought assessment index based on water resources systems |
| title_fullStr | Drought assessment in the Dongliao River basin: traditional approaches vs. generalized drought assessment index based on water resources systems |
| title_full_unstemmed | Drought assessment in the Dongliao River basin: traditional approaches vs. generalized drought assessment index based on water resources systems |
| title_short | Drought assessment in the Dongliao River basin: traditional approaches vs. generalized drought assessment index based on water resources systems |
| title_sort | drought assessment in the dongliao river basin traditional approaches vs generalized drought assessment index based on water resources systems |
| url | http://www.nat-hazards-earth-syst-sci.net/15/1889/2015/nhess-15-1889-2015.pdf |
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