LPMLEn - A frequency domain method to estimate vertical streambed fluxes and sediment thermal properties in semi-infinite and bounded domains

Autor:	Ricky van Kampen, Uwe Schneidewind, Christian Anibas, Andrea Bertagnoli, Daniele Tonina, Gerd Vandersteen, Charles Luce, Stefan Krause, Matthijs van Berkel
Přispěvatelé:	Control Systems Technology, Group Heemels, Electricity
Rok vydání:	2022
Předmět:	temperature modeling groundwater-surface water interaction LPMLEn maximum likelihood estimator heat as a tracer frequency domain vertical streambed flux Water Science and Technology
Zdroj:	Water Resources Research, 58, e2021WR030886 Water Resources Research, 58(3):e2021WR030886. American Geophysical Union (AGU)
ISSN:	0043-1397
Popis:	This paper presents the LPMLEn, a new method to estimate vertical flux and thermal diffusivity from streambed temperature time-series using the frequency domain. The main advantages of this new method are: (1) the use of multiple frequencies and multiple sensors for the parameter estimation; (2) noise/uncertainty handling in an optimal way; (3) the possibility to estimate the parameters with both semi-infinite and bounded domain models; and (4) the compensation for temperature drifts in the data known as transients. The capabilities of the LPMLEn are demonstrated using both synthetic and field data, highlighting the advantages of the bounded domain model over the semi-infinite domain model in the parameter estimation process. (LPMLEn - A code for estimating heat transport parameters in 1D, HydroShare (43.0 MB), http://www.hydroshare.org/resource/3b13760174174c31988120baeb84e2e8
Databáze:	OpenAIRE
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