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| Articles
by
M. Vafakhah |
Total Records (
1 ) for
M. Vafakhah |
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H. Zarrin
,
F. Sharifi
,
M. Vafakhah
and
M.H. Mahdian
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In this research, to evaluating of low flow from data
of 28 hygrometry stations of Karkheh and Karoon basin, were analyzed and
then flow duration curve was drew and discharge of parameters includes
Q75%, Q90%, Q92%, Q95% and
Q99% were calculated. Toward nomination of effective factors
on low flow 21 parameters was detected such as physiographic, hydro climatic
and geomorphologic, with geographic information system. With principal
components analysis method we chose components which has less correlation.
This component in regard of their importance include: weighted average
slop of catchment, area, average elevation of catchment, compactness coefficient
and slop of main channel which illustrate 80.5% of variation of data.
In continue regional analysis with multivariate regression to establish
relations between low flow and catchment’s characteristics. Finally
regard to comparing and assessment the accuracy of estimating methods,
we used 9 control stations data and then we compared the amount of discharge
of low flow-on the base of-achieved models with the amounts of control
stations and finally the results shown that obtained models in this area
were significant (at 99% level). |
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