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来源类型Article
规范类型其他
DOI10.1002/2016GL071665
Intensification of hydrological drought in California by human water management.
He X; Wada Y; Wanders N; Sheffield J
发表日期2017
出处Geophysical Research Letters 24 (4): 1777-1785
出版年2017
语种英语
摘要We analyze the contribution of human water management to the intensification and mitigation of hydrological drought over California using the PCR-GLOBWB hydrological model for the period 1979-2014. We demonstrate that considering water management results in more accurate discharge representation. During the severe 2014 drought, water management alleviated the drought deficit by ∼50% in Southern California through reservoir operation during low flow periods. However, human water consumption (mostly irrigation) in the Central Valley increased drought duration and deficit by 50% and 50-100%, respectively. Return level analysis indicates that there is more than 50% chance that the probability of occurrence of an extreme 2014-magnitude drought event was at least doubled under the influence of human activities compared to natural variability. This impact is most significant over the San Joaquin Drainage basin with a 50% and 75% likelihood that the return period is more than 3.5 and 1.5 times larger, respectively, because of human activities.
主题Water (WAT)
URLhttp://pure.iiasa.ac.at/id/eprint/14339/
来源智库International Institute for Applied Systems Analysis (Austria)
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资源类型智库出版物
条目标识符http://119.78.100.153/handle/2XGU8XDN/130919
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He X,Wada Y,Wanders N,et al. Intensification of hydrological drought in California by human water management.. 2017.
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