Implementation of the Fourier series model to study impact of evapotrans- piration on runoff.
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60460709%3A41210%2F15%3A%230000117" target="_blank" >RIV/60460709:41210/15:#0000117 - isvavai.cz</a>
Alternative codes found
RIV/60460709:41310/15:#0000031 RIV/60460709:41330/15:#0000093
Result on the web
<a href="http://www.iugg2015prague.com/" target="_blank" >http://www.iugg2015prague.com/</a>
DOI - Digital Object Identifier
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Alternative languages
Result language
angličtina
Original language name
Implementation of the Fourier series model to study impact of evapotrans- piration on runoff.
Original language description
Catchments are dynamic systems where evapotranspiration data can be assessed either by measurements of climate-meteorology output data, or by measurements of stream-flow fluctuation and free water evaporation. The latter procedure is connected with the recent development of high resolution (sensing) equipment for measuring discharges. Using a short time step (DT = 60 min) on small catchments enables the measurement of stream-flow fluctuation diurnally during 24 hours (day/night) in a harmonic wave, taking also into consideration the impact of actual evapotranspiration of a vegetation cover. In parallel, we have measured the water evaporation as well as the soil moisture content nearby. We have implemented a harmonic analysis of the discharges by the Fourier series model (FSM). This model provides computed discharges data estimated through the harmonic coefficients, as assessed by FSM. Such a procedure can be used also for supplementing missing data when stream-flow series are incomplete. By using measured data of water evaporation and soil moisture content we can compute the actual evapotranspiration from the catchment vegetation as the final output of the FSM model. When jagged, the measured series of discharges can also be smoothened by the Fourier approximation, or by the polynomial approximation.
Czech name
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Czech description
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Classification
Type
O - Miscellaneous
CEP classification
DA - Hydrology and limnology
OECD FORD branch
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Result continuities
Project
<a href="/en/project/TA02020402" target="_blank" >TA02020402: WATER REGIME OPTIMISATION IN LANDSCAPE FOR REDUCING THE IMPACT OF HYDROLOGICAL EXTREMES</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2015
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů