Using in-situ temperature measurements to estimate saturated soil thermal properties by solving a sequence of optimization problems
International audience We describe an approach to find an initial approximation to the thermal properties of soil horizons. This technique approximates thermal conductivity, porosity, unfrozen water content curves in horizons where no direct temperature measurements are available. To determine physi...
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ftccsdartic:oai:HAL:hal-00298506v1 2023-11-12T04:27:17+01:00 Using in-situ temperature measurements to estimate saturated soil thermal properties by solving a sequence of optimization problems Nicolsky, D. J. Romanovsky, V. E. Tipenko, G. S. Geophysical Institute Fairbanks University of Alaska Fairbanks (UAF) Institute of Environmental Geoscience Russian Academy of Sciences 13-2 Ulansky pereulok 2007-11-22 https://hal.science/hal-00298506 https://hal.science/hal-00298506/document https://hal.science/hal-00298506/file/tc-1-41-2007.pdf en eng HAL CCSD Copernicus hal-00298506 https://hal.science/hal-00298506 https://hal.science/hal-00298506/document https://hal.science/hal-00298506/file/tc-1-41-2007.pdf info:eu-repo/semantics/OpenAccess ISSN: 1994-0424 EISSN: 1994-0416 The Cryosphere https://hal.science/hal-00298506 The Cryosphere, 2007, 1 (1), pp.41-58 [SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.STU]Sciences of the Universe [physics]/Earth Sciences info:eu-repo/semantics/article Journal articles 2007 ftccsdartic 2023-10-21T23:15:03Z International audience We describe an approach to find an initial approximation to the thermal properties of soil horizons. This technique approximates thermal conductivity, porosity, unfrozen water content curves in horizons where no direct temperature measurements are available. To determine physical properties of ground material, optimization-based inverse techniques are employed to fit the simulated temperatures to the measured ones. Two major ingredients of these techniques are an algorithm to compute the soil temperature dynamics and a procedure to find an initial approximation to the ground properties. In this article we show how to determine the initial approximation to the physical properties and present a new finite element discretization of the heat equation with phase change to calculate the temperature dynamics in soil. We successfully apply the proposed algorithm to recover the soil properties for the Happy Valley site in Alaska using one-year temperature dynamics. The determined initial approximation is utilized to simulate the temperature dynamics over several consecutive years; the difference between simulated and measured temperatures lies within uncertainties of measurements. Article in Journal/Newspaper The Cryosphere Alaska Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) Happy Valley ENVELOPE(-133.520,-133.520,60.016,60.016) |
institution |
Open Polar |
collection |
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) |
op_collection_id |
ftccsdartic |
language |
English |
topic |
[SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.STU]Sciences of the Universe [physics]/Earth Sciences |
spellingShingle |
[SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.STU]Sciences of the Universe [physics]/Earth Sciences Nicolsky, D. J. Romanovsky, V. E. Tipenko, G. S. Using in-situ temperature measurements to estimate saturated soil thermal properties by solving a sequence of optimization problems |
topic_facet |
[SDU.ENVI]Sciences of the Universe [physics]/Continental interfaces environment [SDU.OCEAN]Sciences of the Universe [physics]/Ocean Atmosphere [SDU.STU]Sciences of the Universe [physics]/Earth Sciences |
description |
International audience We describe an approach to find an initial approximation to the thermal properties of soil horizons. This technique approximates thermal conductivity, porosity, unfrozen water content curves in horizons where no direct temperature measurements are available. To determine physical properties of ground material, optimization-based inverse techniques are employed to fit the simulated temperatures to the measured ones. Two major ingredients of these techniques are an algorithm to compute the soil temperature dynamics and a procedure to find an initial approximation to the ground properties. In this article we show how to determine the initial approximation to the physical properties and present a new finite element discretization of the heat equation with phase change to calculate the temperature dynamics in soil. We successfully apply the proposed algorithm to recover the soil properties for the Happy Valley site in Alaska using one-year temperature dynamics. The determined initial approximation is utilized to simulate the temperature dynamics over several consecutive years; the difference between simulated and measured temperatures lies within uncertainties of measurements. |
author2 |
Geophysical Institute Fairbanks University of Alaska Fairbanks (UAF) Institute of Environmental Geoscience Russian Academy of Sciences 13-2 Ulansky pereulok |
format |
Article in Journal/Newspaper |
author |
Nicolsky, D. J. Romanovsky, V. E. Tipenko, G. S. |
author_facet |
Nicolsky, D. J. Romanovsky, V. E. Tipenko, G. S. |
author_sort |
Nicolsky, D. J. |
title |
Using in-situ temperature measurements to estimate saturated soil thermal properties by solving a sequence of optimization problems |
title_short |
Using in-situ temperature measurements to estimate saturated soil thermal properties by solving a sequence of optimization problems |
title_full |
Using in-situ temperature measurements to estimate saturated soil thermal properties by solving a sequence of optimization problems |
title_fullStr |
Using in-situ temperature measurements to estimate saturated soil thermal properties by solving a sequence of optimization problems |
title_full_unstemmed |
Using in-situ temperature measurements to estimate saturated soil thermal properties by solving a sequence of optimization problems |
title_sort |
using in-situ temperature measurements to estimate saturated soil thermal properties by solving a sequence of optimization problems |
publisher |
HAL CCSD |
publishDate |
2007 |
url |
https://hal.science/hal-00298506 https://hal.science/hal-00298506/document https://hal.science/hal-00298506/file/tc-1-41-2007.pdf |
long_lat |
ENVELOPE(-133.520,-133.520,60.016,60.016) |
geographic |
Happy Valley |
geographic_facet |
Happy Valley |
genre |
The Cryosphere Alaska |
genre_facet |
The Cryosphere Alaska |
op_source |
ISSN: 1994-0424 EISSN: 1994-0416 The Cryosphere https://hal.science/hal-00298506 The Cryosphere, 2007, 1 (1), pp.41-58 |
op_relation |
hal-00298506 https://hal.science/hal-00298506 https://hal.science/hal-00298506/document https://hal.science/hal-00298506/file/tc-1-41-2007.pdf |
op_rights |
info:eu-repo/semantics/OpenAccess |
_version_ |
1782340939734319104 |