Application of subtractive set pair potential in the determining flood season of Foziling Reservoir
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Abstract:
To effectively characterize the comprehensive influence of uncertain factors such as precipitation and runoff on the determining flood season in the reservoir basin according to experience in the existing method of distinguishing flood season staging based on set pair analysis, a subtraction based set pair situation method was proposed to discriminate the staging results by applying the concept of determining flood season.Taking the flood season staging of Foziling Reservoir as an example, five indexes of rainstorms and floods that can affect the division of flood season were selected. According to the local climate characteristics, the flood season of Foziling Reservoir can be divided into four periods such as the early flood season, the main flood season, the summer and drought season, the late flood season, and the bare flood season.Finally, it is compared with the method of two-element connection number and three-element connection number. The results show that the subtraction based set pair situation method is simple and practical for determining flood season, and the results are reasonable.It is consistent with the conclusion of the set pair analysis method of two-element connection number and three-element connection number, can objectively reflect the situation of the influence of rainstorm and flood characteristics on flood season in Foziling Reservoir, and also can intuitively distinguish the boundary between non-flood season and flood season. The subtraction set pair potential method proposed is reasonable to apply in determining the flood season of reservoirs.
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