Evaluation of the ground surface Enthalpy balance from bedrock temperatures (Livingston Island, Maritime Antarctic)
The annual evolution of the ground temperatures from Incinerador borehole in Livingston Island (South Shetlands, Antarctic) is studied. The borehole is 2.4 m deep and is located in a massive quartzite outcrop with negligible water content, in the proximity of the Spanish Antarctic Station Juan Carlo...
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Online Access: | http://hdl.handle.net/10451/37017 https://doi.org/10.5194/tc-3-133-2009 |
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ftunivlisboa:oai:repositorio.ul.pt:10451/37017 2023-05-15T13:37:33+02:00 Evaluation of the ground surface Enthalpy balance from bedrock temperatures (Livingston Island, Maritime Antarctic) Ramos, M. Vieira, Goncalo 2019-02-15T10:42:35Z http://hdl.handle.net/10451/37017 https://doi.org/10.5194/tc-3-133-2009 eng eng Copernicus Publications https://www.the-cryosphere.net/3/133/2009/tc-3-133-2009.pdf Ramos, M., Vieira, G. (2009). Evaluation of the ground surface Enthalpy balance from bedrock temperatures (Livingston Island, Maritime Antarctic). Cryosphere, 3(1), pp. 133–145. https://doi.org/10.5194/tc-3-133-2009. 1994-0416 1994-0424 http://hdl.handle.net/10451/37017 doi:10.5194/tc-3-133-2009 openAccess http://creativecommons.org/licenses/by/4.0/ CC-BY Ground surface Bedrock temperatures Livingston Island Maritime Antarctic article 2019 ftunivlisboa https://doi.org/10.5194/tc-3-133-2009 2022-05-25T18:39:21Z The annual evolution of the ground temperatures from Incinerador borehole in Livingston Island (South Shetlands, Antarctic) is studied. The borehole is 2.4 m deep and is located in a massive quartzite outcrop with negligible water content, in the proximity of the Spanish Antarctic Station Juan Carlos I. In order to model the movement of the 0◦C isotherm (velocity and maximum depth) hourly temperature profiles from: (i) the cooling periods of the frost season of 2000 to 2005, and (ii) the warming periods of the thaw season of 2002–2003, 2003–2004 and 2004–2005, were studied. In this modelling approach, heat gains and losses across the ground surface are assumed to be the causes for the 0◦C isotherm movement. A methodological approach to calculate the ground Enthalpy change based on the thermodynamic analysis of the ground during the cooling and warming periods is proposed. The Enthalpy change into the rock is equivalent to the heat exchange through the ground surface during each season, thus enabling to describe the interaction groundatmosphere and providing valuable data for studies on permafrost and periglacial processes. The bedrock density and thermal conductivity are considered to be constant and initial isothermal conditions at 0◦C are assumed (based in collected data and local meteorological conditions in this area) to run the model in the beginning of each season. The final stages correspond to the temperatures at the end of the cooling and warming periods (annual minima and maxima). The application of this method avoids error propagation induced by the heat exchange calculations from multiple sensors using the Fourier method. info:eu-repo/semantics/publishedVersion Article in Journal/Newspaper Antarc* Antarctic Livingston Island permafrost Universidade de Lisboa: repositório.UL Antarctic Livingston Island ENVELOPE(-60.500,-60.500,-62.600,-62.600) The Cryosphere 3 1 133 145 |
institution |
Open Polar |
collection |
Universidade de Lisboa: repositório.UL |
op_collection_id |
ftunivlisboa |
language |
English |
topic |
Ground surface Bedrock temperatures Livingston Island Maritime Antarctic |
spellingShingle |
Ground surface Bedrock temperatures Livingston Island Maritime Antarctic Ramos, M. Vieira, Goncalo Evaluation of the ground surface Enthalpy balance from bedrock temperatures (Livingston Island, Maritime Antarctic) |
topic_facet |
Ground surface Bedrock temperatures Livingston Island Maritime Antarctic |
description |
The annual evolution of the ground temperatures from Incinerador borehole in Livingston Island (South Shetlands, Antarctic) is studied. The borehole is 2.4 m deep and is located in a massive quartzite outcrop with negligible water content, in the proximity of the Spanish Antarctic Station Juan Carlos I. In order to model the movement of the 0◦C isotherm (velocity and maximum depth) hourly temperature profiles from: (i) the cooling periods of the frost season of 2000 to 2005, and (ii) the warming periods of the thaw season of 2002–2003, 2003–2004 and 2004–2005, were studied. In this modelling approach, heat gains and losses across the ground surface are assumed to be the causes for the 0◦C isotherm movement. A methodological approach to calculate the ground Enthalpy change based on the thermodynamic analysis of the ground during the cooling and warming periods is proposed. The Enthalpy change into the rock is equivalent to the heat exchange through the ground surface during each season, thus enabling to describe the interaction groundatmosphere and providing valuable data for studies on permafrost and periglacial processes. The bedrock density and thermal conductivity are considered to be constant and initial isothermal conditions at 0◦C are assumed (based in collected data and local meteorological conditions in this area) to run the model in the beginning of each season. The final stages correspond to the temperatures at the end of the cooling and warming periods (annual minima and maxima). The application of this method avoids error propagation induced by the heat exchange calculations from multiple sensors using the Fourier method. info:eu-repo/semantics/publishedVersion |
format |
Article in Journal/Newspaper |
author |
Ramos, M. Vieira, Goncalo |
author_facet |
Ramos, M. Vieira, Goncalo |
author_sort |
Ramos, M. |
title |
Evaluation of the ground surface Enthalpy balance from bedrock temperatures (Livingston Island, Maritime Antarctic) |
title_short |
Evaluation of the ground surface Enthalpy balance from bedrock temperatures (Livingston Island, Maritime Antarctic) |
title_full |
Evaluation of the ground surface Enthalpy balance from bedrock temperatures (Livingston Island, Maritime Antarctic) |
title_fullStr |
Evaluation of the ground surface Enthalpy balance from bedrock temperatures (Livingston Island, Maritime Antarctic) |
title_full_unstemmed |
Evaluation of the ground surface Enthalpy balance from bedrock temperatures (Livingston Island, Maritime Antarctic) |
title_sort |
evaluation of the ground surface enthalpy balance from bedrock temperatures (livingston island, maritime antarctic) |
publisher |
Copernicus Publications |
publishDate |
2019 |
url |
http://hdl.handle.net/10451/37017 https://doi.org/10.5194/tc-3-133-2009 |
long_lat |
ENVELOPE(-60.500,-60.500,-62.600,-62.600) |
geographic |
Antarctic Livingston Island |
geographic_facet |
Antarctic Livingston Island |
genre |
Antarc* Antarctic Livingston Island permafrost |
genre_facet |
Antarc* Antarctic Livingston Island permafrost |
op_relation |
https://www.the-cryosphere.net/3/133/2009/tc-3-133-2009.pdf Ramos, M., Vieira, G. (2009). Evaluation of the ground surface Enthalpy balance from bedrock temperatures (Livingston Island, Maritime Antarctic). Cryosphere, 3(1), pp. 133–145. https://doi.org/10.5194/tc-3-133-2009. 1994-0416 1994-0424 http://hdl.handle.net/10451/37017 doi:10.5194/tc-3-133-2009 |
op_rights |
openAccess http://creativecommons.org/licenses/by/4.0/ |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.5194/tc-3-133-2009 |
container_title |
The Cryosphere |
container_volume |
3 |
container_issue |
1 |
container_start_page |
133 |
op_container_end_page |
145 |
_version_ |
1766093854105141248 |