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The Hydrological Response of Baseflow in Fractured Mountain Areas : Volume 6, Issue 2 (22/04/2009)

By Millares, A.

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Book Id: WPLBN0003974171
Format Type: PDF Article :
File Size: Pages 26
Reproduction Date: 2015

Title: The Hydrological Response of Baseflow in Fractured Mountain Areas : Volume 6, Issue 2 (22/04/2009)  
Author: Millares, A.
Volume: Vol. 6, Issue 2
Language: English
Subject: Science, Hydrology, Earth
Collections: Periodicals: Journal and Magazine Collection, Copernicus GmbH
Historic
Publication Date:
2009
Publisher: Copernicus Gmbh, Göttingen, Germany
Member Page: Copernicus Publications

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Losada, M. A., Millares, A., & Polo, M. J. (2009). The Hydrological Response of Baseflow in Fractured Mountain Areas : Volume 6, Issue 2 (22/04/2009). Retrieved from http://hawaiilibrary.net/


Description
Description: Environmental Fluid Dynamic Group, Andalusian Centre for Environmental Studies (CEAMA), Avda. del Mediterráneo s/n, 18006, Granada, Spain. The study of baseflow in mountainous areas of basin headwaters, where the characteristics of the often fractured materials are very different to the standard issues concerning porous material applied in conventional hydrogeology, is an essential element in the characterization and quantification of water system resources. Their analysis through recession fragments provides information on the type of response of the sub-surface and subterranean systems and on the average relation between the storage and discharge of aquifers, starting from the joining of these fragments into a single curve, the Master Recession Curve (MRC). This paper presents the generation of the downward MRC over fragments selected after a preliminary analysis of the recession curves, using a hydrological model as the methodology for the identification and the characterization of quick sub-surface flows flowing through fractured materials. The hydrological calculation has identified recession fragments through surface runoff or snowmelt and those periods of intense evapotranspiration. The proposed methodology has been applied to three sub-basins belonging to a high altitude mountain basin in the Mediterranean area, with snow present every year, and their results were compared with those for the upward concatenation of the recession fragments. The results show the existence of two different responses, one quick (at the sub-surface, through the fractured material) and the other slow, with linear behavior which takes place in periods of 10 and 17 days, respectively and which is linked to the dimensions of the sub-basin. In addition, recesses belonging to the dry season have been selected in order to compare and validate the results corresponding to the study of recession fragments. The comparison, using these two methodologies, which differ in the time period selected, has allowed us to validate the results obtained for the slow flow.

Summary
The hydrological response of baseflow in fractured mountain areas

Excerpt
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