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Establishing Qualitative Hypotheses on the Influence of El Nifio On Metropolitan Adelaide Water Supply
The question is raised whether El Niño, as a symptom of the Southern Oscillation, has an influence on Metropolitan Adelaide water supply. To answer this, four qualitative hypotheses have been established in this paper to indicate that there is an influence. The four hypotheses are described as follows. As Niños and Australian droughts intensify, as represented by increasing negative intensity of the Southern Oscillation, there is a tendency for rainfall deficiency to increase over the catchments of the Mount Lofty Ranges supplying water to Metropolitan intake from the River Murray to supplement the supply deficiency of the Mount Lofty Range catchments. However, the Southern Oscillation may have an influence on River Murray flows into South Australia if such flows are not affected by regulation of up-stream storage. But for regulated River Murray flows into South Australia either at the Entitlement flow level or close to it, the influence of Niños on such regulated flows may be masked by regulation. Finally, as the Southern Oscillation increases in negative intensity, its area of influence could extend to South Australia besides northern and southern Australia. In this situation, below-averge annual rainfall in the Mount Lofty Ranges and below average annual River Murray flows into South Australia could occur in the same year.
Establishing Qualitative Hypotheses on the Influence of El Nifio On Metropolitan Adelaide Water Supply
The question is raised whether El Niño, as a symptom of the Southern Oscillation, has an influence on Metropolitan Adelaide water supply. To answer this, four qualitative hypotheses have been established in this paper to indicate that there is an influence. The four hypotheses are described as follows. As Niños and Australian droughts intensify, as represented by increasing negative intensity of the Southern Oscillation, there is a tendency for rainfall deficiency to increase over the catchments of the Mount Lofty Ranges supplying water to Metropolitan intake from the River Murray to supplement the supply deficiency of the Mount Lofty Range catchments. However, the Southern Oscillation may have an influence on River Murray flows into South Australia if such flows are not affected by regulation of up-stream storage. But for regulated River Murray flows into South Australia either at the Entitlement flow level or close to it, the influence of Niños on such regulated flows may be masked by regulation. Finally, as the Southern Oscillation increases in negative intensity, its area of influence could extend to South Australia besides northern and southern Australia. In this situation, below-averge annual rainfall in the Mount Lofty Ranges and below average annual River Murray flows into South Australia could occur in the same year.
Establishing Qualitative Hypotheses on the Influence of El Nifio On Metropolitan Adelaide Water Supply
Tai, K. C. (author)
Water International ; 12 ; 8-14
1987-01-01
7 pages
Article (Journal)
Electronic Resource
Unknown
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