Use of many-objective visual analytics to analyze water supply objective tradeoffs with water transfer
Zhang, C; Li, Y; Chu, J; et al.Fu, G; Tang, R; Qi, W
Date: 10 June 2017
Article
Journal
Journal of Water Resources Planning and Management
Publisher
American Society of Civil Engineers
Publisher DOI
Abstract
The construction of water transfer projects can have a considerable impact on the
operation of the receiving reservoir. This study investigates the change of the objective
tradeoffs in multi-objective reservoir operation problems due to the introduction of water
transfer using a case study of the East-to-West Water Transfer project ...
The construction of water transfer projects can have a considerable impact on the
operation of the receiving reservoir. This study investigates the change of the objective
tradeoffs in multi-objective reservoir operation problems due to the introduction of water
transfer using a case study of the East-to-West Water Transfer project in northeastern China.
Two optimization cases are constructed to analyze the tradeoff changes: a base case with no
water transfer which considers four objectives, i.e., minimizing industry water shortage,
minimizing agriculture water shortage, minimizing water spillage, and maximizing ecological
satisfaction; a future post-construction case which considers an additional objective to
minimize the amount of water transferred. Results obtained from the case study show
increasing water transfer substantially reduces the intensity of the competition between
industrial and agricultural water shortages, and the objective tradeoffs among water spillage,
ecological satisfaction and agricultural shortage index are substantially changed because of
water transfer. In addition, the amount of water transferred with high efficiency regarding
each objective is identified, and three solutions of different orders of magnitude in diverted
water have been recommended for informed decision making considering efficiency and
benefit. This study implies that many-objective visual analytics can be used to determine the
optimal amount of water transferred in terms of water efficiency revealed in different
objective tradeoff spaces.
Engineering
Faculty of Environment, Science and Economy
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