Journal
GEOMATICS NATURAL HAZARDS & RISK
Volume 10, Issue 1, Pages 1084-1101Publisher
TAYLOR & FRANCIS LTD
DOI: 10.1080/19475705.2018.1564706
Keywords
Socio-economic drought; reservoir; the cross wavelet analysis; ENSO
Funding
- National Key Research and Development Program of China [2017YFC0405900]
- National Natural Science Foundation of China [51709221]
- Planning Project of Science and Technology of Water Resources of Shaanxi [2015slkj-27, 2017slkj-19]
- China Scholarship Council [201608610170]
- Open Research Fund of State Key Laboratory of Simulation and Regulation of Water Cycle in River Basin (China Institute of Water Resources and Hydropower Research) [IWHR-SKL-KF201803]
- Doctorate Innovation Funding of Xi'an University of Technology [310-252071712]
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Droughts are among the most damaging environmental disasters that may have destructive damages on societal properties and lives. Generally, socio-economic drought occurs when water resources systems could not fulfil the water demand. Additionally, it is not to be overlooked the role of local reservoirs in modifying uneven distribution of water and coping with climatic extremes. This study examined the evolution characteristics of the socio-economic droughts via applying a Multivariate Standardized Reliability and Resilience Index (MSRRI). Furthermore, the influences of anomalous atmospheric circulation on the socio-economic droughts were explored through adopting the cross wavelet analysis to investigate the meteorological driving force behind the socio-economic droughts. Results mainly indicated that (1) the MSRRI has proven to be effective in evaluating socio-economic droughts for its integration of inflow-demand reliability and water storage resilience indexes; (2) the MSRRI series in Datong River Basin (DRB) has a non-significant increasing trend at annual scale with apparent periods (17 and 22 years) and (3) the comprehensive effects of ENSO, EASM and PNA contribute to the socio-economic drought variations, and the ENSO has strongest impacts than others. The findings in this study benefit local socioeconomic drought mitigation and water resources planning and management.
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