Evaluation of karstic aquifers contribution to streams by the statistical analysis of recession curves |
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| Authors: | A Cem Koc |
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| Institution: | (1) Civil Engineering Department, Pamukkale University, Kinikli Kampusu, 20017, Denizli, Turkey |
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| Abstract: | Karstic aquifers significantly contribute to streams in most of Turkey’s river basins, so studies on karst water resources
have great importance for Turkey. Karstic aquifer contributions are generally emerging at several locations near the river
bed and are not readily measured by direct hydrometric methods. In this study, the extent of karstic aquifer contributions
to a stream will be investigated by the statistical analysis of recession coefficients of recession curves. Six stream gauging
stations on different streams in the western Mediterranean region of Turkey are selected. Recession periods of the streams
are simulated by exponential and quadratic recession curve models. Recession coefficient series of the stream gauging stations
are statistically investigated. The comparison of various statistical parameters shows that the recession coefficient series
are fairly related to the karstic aquifer contributions. Especially, the measure of spread parameters, standard deviation
and interquartile range of recession coefficient series are related to the extent of the karstic aquifer contributions to
streams. |
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| Keywords: | Recession curve karstic aquifer western Mediterranean Basin-Turkey data analysis hydrology modelling |
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