Impact of evapotranspiration on discharge in small catchments

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Title:Impact of evapotranspiration on discharge in small catchments
Creators:
Dvořáková, Šárka; dvorakovas at tf dot czu dot cz; Faculty of Engineering, Department of Mathematics, Czech University of Life Sciences, (CULS Prague), Kamycka 129, 165 21 Prague 6, Czech Republic.
Kovář, Pavel; Faculty of Environmental Sciences, Department of Land Use and Improvement, CULS Prague, Czech Republic.
Zeman, Josef; Faculty of Engineering, Department of Physics, CULS Prague, Czech Republic.
Journal or Publication Title:
Journal of Hydrology and Hydromechanics, 62, 4, pp. 285-292
Uncontrolled Keywords:catchment water depletion, diurnal streamflow variability, evapotranspiration, Linear Storage Model (LSM)

Abstract

We apply the Linear Storage Model (LSM) to simulate the influence of the evapotranspiration on discharges. High resolution discharge data from two small catchments in the Czech Republic, the Teply Brook and the Starosuchdolsky Brook catchment are used. The results show the runoff process is simpler in a deeper valley of the Starosuchdolsky catchment where the soil zone is deeper and the valley bottom recharges runoff even during very dry periods. Two-soil zone model is adequate to simulate the diurnal runoff variability. Three-soil zone model is needed in the Teply Brook catchment due to the absence of water transport in the most-upper soil zone. Time delays between minimum and maximum discharge during the day reach up to about 20 hours. Evapotranspiration and hydraulic resistances are as high as 14% of catchment daily runoff in the urbanized Starosuchdolsky Brook catchment and 25% of catchment daily runoff in the forested, less impacted Teply Brook catchment.

Official URL: http://147.213.145.2/vc/vc1.asp

Title:Impact of evapotranspiration on discharge in small catchments
Translated title:Impact of evapotranspiration on discharge in small catchments
Creators:
Dvořáková, Šárka; dvorakovas at tf dot czu dot cz; Faculty of Engineering, Department of Mathematics, Czech University of Life Sciences, (CULS Prague), Kamycka 129, 165 21 Prague 6, Czech Republic.
Kovář, Pavel; Faculty of Environmental Sciences, Department of Land Use and Improvement, CULS Prague, Czech Republic.
Zeman, Josef; Faculty of Engineering, Department of Physics, CULS Prague, Czech Republic.
Uncontrolled Keywords:catchment water depletion, diurnal streamflow variability, evapotranspiration, Linear Storage Model (LSM)
Subjects:T Technology > TA Engineering (General). Civil engineering (General)
Divisions:Mathematics, Physics and Earth Sciences > Institute of Hydrodynamics > Journal of Hydrology and Hydromechanics
Journal or Publication Title:Journal of Hydrology and Hydromechanics
Volume:62
Number:4
Page Range:pp. 285-292
ISSN:0042-790X
Publisher:Institute of Hydrology of the Slovak Academy of Sciences and the Institute of Hydrodynamics of the Academy of Sciences of the Czech Republic
Related URLs:
URLURL Type
http://avi.lib.cas.cz/node/55Publisher
ID Code:8350
Item Type:Article
Deposited On:08 Jan 2015 18:41
Last Modified:08 Jan 2015 17:41

Citation

Dvořáková, Šárka; Kovář, Pavel; Zeman, Josef (2014) Impact of evapotranspiration on discharge in small catchments. Journal of Hydrology and Hydromechanics, 62 (4). pp. 285-292. ISSN 0042-790X

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