Regional available water supply estimation method considering multi-water-source joint probability distribution

Abstract

The invention relates to the field of water resource planning and management, in particular to a regional water supply amount estimation method considering multi-water-source joint probability distribution. The method comprises the following steps: analyzing a plurality of water supply sources in a set area to obtain runoff data; respectively calculating a correlation coefficient between every two water supply sources, and judging the correlation of the water supply source runoff series; aiming at the water supply sources with relatively strong correlation, utilizing a Copula function to obtain a joint probability distribution function, and carrying out hydrological plump and heave situation analysis on the plurality of water supply sources to obtain runoff volumes of the plurality of water supply sources under different plump and heave situations; for a water supply source with relatively weak correlation, drawing an annual runoff frequency curve based on a P-III type curve to obtain runoff under different hydrological guarantee rates; and determining the water supply amount of the upstream reservoir in the high, middle and low precipitation years by combining the water storage requirement of the reservoir and the ecological base flow requirement of the river. According to the method, the uncertainty of water supply change caused by runoff change is considered, and a quantitative basis is provided for optimal allocation of regional water resources.

Description

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AI Technical Summary

Benefits of technology

This patented technology solves multiple problem areas related to studying how well two or three types of factors are connected together that affects the relationship between them: (1) The copula method helps us analyze complex data such as temperature differences across geographic locations without assuming specific values like altitude levels. (2) By fitting certain parameters into this model, researchers have been able to predict future changes in rainfall patterns caused by these conditions. (3) It provides accurate estimates about the location of various parts of the world' s ocean nearer its equator during winter months compared to other places around it. Overall, this approach allows scientists to better identify potential environmental hazards associated with sea ice flooding events through simulations.

Problems solved by technology

This patented technical problem addressed in this patents relates to estimating localized water supplies accurately despite varying factors like seasonal changes or environmental impacts such as flooding during rainwater harvesting operations. Current methods have limitations due to high error rates caused by variations over time, lack of consideration for correlations among various regions' water needs, and insufficient understanding of how these differences affect each other.

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