Estimation of thermal properties of saturated soils using in-situ temperature measurements
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 curve in horizons where no direct temperature measurements are available. To determine physic...
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ftinsu:oai:HAL:hal-00298528v1 2023-11-12T04:27:17+01:00 Estimation of thermal properties of saturated soils using in-situ temperature measurements 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 2007-08-09 https://hal.science/hal-00298528 https://hal.science/hal-00298528/document https://hal.science/hal-00298528/file/tcd-1-213-2007.pdf en eng HAL CCSD Copernicus hal-00298528 https://hal.science/hal-00298528 https://hal.science/hal-00298528/document https://hal.science/hal-00298528/file/tcd-1-213-2007.pdf info:eu-repo/semantics/OpenAccess ISSN: 1994-0432 EISSN: 1994-0440 The Cryosphere Discussions https://hal.science/hal-00298528 The Cryosphere Discussions, 2007, 1 (1), pp.213-269 [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 ftinsu 2023-10-25T16:27:55Z 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 curve in horizons where no direct temperature measurements are available. To determine physical properties of ground material, optimization-based inverse modeling techniques fitting the simulated and measured temperatures are commonly employed. Two major ingredients of these techniques is 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 applied the proposed algorithm to recover the soil properties for Happy Valley site in Alaska using one-year temperature dynamics. The determined initial approximation was 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 The Cryosphere Discussions Alaska Institut national des sciences de l'Univers: HAL-INSU Happy Valley ENVELOPE(-133.520,-133.520,60.016,60.016) |
institution |
Open Polar |
collection |
Institut national des sciences de l'Univers: HAL-INSU |
op_collection_id |
ftinsu |
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. Estimation of thermal properties of saturated soils using in-situ temperature measurements |
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 curve in horizons where no direct temperature measurements are available. To determine physical properties of ground material, optimization-based inverse modeling techniques fitting the simulated and measured temperatures are commonly employed. Two major ingredients of these techniques is 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 applied the proposed algorithm to recover the soil properties for Happy Valley site in Alaska using one-year temperature dynamics. The determined initial approximation was 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 |
Estimation of thermal properties of saturated soils using in-situ temperature measurements |
title_short |
Estimation of thermal properties of saturated soils using in-situ temperature measurements |
title_full |
Estimation of thermal properties of saturated soils using in-situ temperature measurements |
title_fullStr |
Estimation of thermal properties of saturated soils using in-situ temperature measurements |
title_full_unstemmed |
Estimation of thermal properties of saturated soils using in-situ temperature measurements |
title_sort |
estimation of thermal properties of saturated soils using in-situ temperature measurements |
publisher |
HAL CCSD |
publishDate |
2007 |
url |
https://hal.science/hal-00298528 https://hal.science/hal-00298528/document https://hal.science/hal-00298528/file/tcd-1-213-2007.pdf |
long_lat |
ENVELOPE(-133.520,-133.520,60.016,60.016) |
geographic |
Happy Valley |
geographic_facet |
Happy Valley |
genre |
The Cryosphere The Cryosphere Discussions Alaska |
genre_facet |
The Cryosphere The Cryosphere Discussions Alaska |
op_source |
ISSN: 1994-0432 EISSN: 1994-0440 The Cryosphere Discussions https://hal.science/hal-00298528 The Cryosphere Discussions, 2007, 1 (1), pp.213-269 |
op_relation |
hal-00298528 https://hal.science/hal-00298528 https://hal.science/hal-00298528/document https://hal.science/hal-00298528/file/tcd-1-213-2007.pdf |
op_rights |
info:eu-repo/semantics/OpenAccess |
_version_ |
1782340940125437952 |