The subsurface thermal state of Svalbard and implications for geothermal potential
Svalbard is a High Arctic Archipelago at 74–81°N and 15–35 °E under the sovereignty of Norway. All settlements in Svalbard, including the capital of Longyearbyen (population 2400), currently have isolated energy systems with coal or diesel as the main energy source. Geothermal energy is considered a...
Published in: | Geothermics |
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2023
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Online Access: | https://pure.au.dk/portal/da/publications/the-subsurface-thermal-state-of-svalbard-and-implications-for-geothermal-potential(4b83029e-8271-4064-a126-2f866ca58832).html https://doi.org/10.1016/j.geothermics.2023.102702 http://www.scopus.com/inward/record.url?scp=85151299111&partnerID=8YFLogxK |
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ftuniaarhuspubl:oai:pure.atira.dk:publications/4b83029e-8271-4064-a126-2f866ca58832 2023-12-31T10:02:20+01:00 The subsurface thermal state of Svalbard and implications for geothermal potential Senger, Kim Nuus, Matthijs Balling, Niels Betlem, Peter Birchall, Tom Christiansen, Hanne H. Elvebakk, Harald Fuchs, Sven Jochmann, Malte Klitzke, Peter Midttømme, Kirsti Olaussen, Snorre Pascal, Christophe Rodes, Nil Shestov, Aleksey Smyrak-Sikora, Aleksandra Thomas, Peter James 2023-06 https://pure.au.dk/portal/da/publications/the-subsurface-thermal-state-of-svalbard-and-implications-for-geothermal-potential(4b83029e-8271-4064-a126-2f866ca58832).html https://doi.org/10.1016/j.geothermics.2023.102702 http://www.scopus.com/inward/record.url?scp=85151299111&partnerID=8YFLogxK eng eng https://pure.au.dk/portal/da/publications/the-subsurface-thermal-state-of-svalbard-and-implications-for-geothermal-potential(4b83029e-8271-4064-a126-2f866ca58832).html info:eu-repo/semantics/openAccess Senger , K , Nuus , M , Balling , N , Betlem , P , Birchall , T , Christiansen , H H , Elvebakk , H , Fuchs , S , Jochmann , M , Klitzke , P , Midttømme , K , Olaussen , S , Pascal , C , Rodes , N , Shestov , A , Smyrak-Sikora , A & Thomas , P J 2023 , ' The subsurface thermal state of Svalbard and implications for geothermal potential ' , Geothermics , vol. 111 , 102702 . https://doi.org/10.1016/j.geothermics.2023.102702 Arctic Geothermal potential Heat flow Sustainable energy Svalbard article 2023 ftuniaarhuspubl https://doi.org/10.1016/j.geothermics.2023.102702 2023-12-07T00:06:09Z Svalbard is a High Arctic Archipelago at 74–81°N and 15–35 °E under the sovereignty of Norway. All settlements in Svalbard, including the capital of Longyearbyen (population 2400), currently have isolated energy systems with coal or diesel as the main energy source. Geothermal energy is considered as a possible alternative for electricity production, as a heat source in district heating systems or harnessed for heating and cooling using geothermal heat pump installations. In this contribution we present the until now fragmented data sets relevant to characterize and assess the geothermal potential of Svalbard. Data sets include petroleum and deep research boreholes drilled onshore Svalbard, 14 of which have recorded subsurface temperature data at depths below 200 m. Geothermal gradients on Spitsbergen vary from 24 °C/km in the west to 55 °C/km in the south-east, with an average of 33 °C/km. Four deep research boreholes were fully cored and analyzed for thermal conductivity. These analyses were complemented by thermal conductivity calculated from wireline logs in selected boreholes and four measurements on outcrop samples. 1D heat flow modelling on five boreholes calibrated with the measured thermal conductivities offers insights into heat transfer through the heterogeneous sedimentary succession. Offshore petroleum boreholes in the south-western Barents Sea and marine heat flow stations around Svalbard provide a regional framework for discussing spatial variation in heat flow onshore Svalbard, with emphasis on the effects of erosion and deposition on the thermal regime. We conclude that Svalbard's geology is well suited for geothermal exploration and potential production, though challenges related to permafrost, the presence of natural gas, heterogeneous reservoir quality and strongly lateral varying heat flow need to be adequately addressed prior to geothermal energy production. Specifically for Longyearbyen, high geothermal gradients of 40–43 °C/km in the nearest borehole (DH4) suggest promising sub-surface ... Article in Journal/Newspaper Arctic Archipelago Arctic Barents Sea Longyearbyen permafrost Svalbard Spitsbergen Aarhus University: Research Geothermics 111 102702 |
institution |
Open Polar |
collection |
Aarhus University: Research |
op_collection_id |
ftuniaarhuspubl |
language |
English |
topic |
Arctic Geothermal potential Heat flow Sustainable energy Svalbard |
spellingShingle |
Arctic Geothermal potential Heat flow Sustainable energy Svalbard Senger, Kim Nuus, Matthijs Balling, Niels Betlem, Peter Birchall, Tom Christiansen, Hanne H. Elvebakk, Harald Fuchs, Sven Jochmann, Malte Klitzke, Peter Midttømme, Kirsti Olaussen, Snorre Pascal, Christophe Rodes, Nil Shestov, Aleksey Smyrak-Sikora, Aleksandra Thomas, Peter James The subsurface thermal state of Svalbard and implications for geothermal potential |
topic_facet |
Arctic Geothermal potential Heat flow Sustainable energy Svalbard |
description |
Svalbard is a High Arctic Archipelago at 74–81°N and 15–35 °E under the sovereignty of Norway. All settlements in Svalbard, including the capital of Longyearbyen (population 2400), currently have isolated energy systems with coal or diesel as the main energy source. Geothermal energy is considered as a possible alternative for electricity production, as a heat source in district heating systems or harnessed for heating and cooling using geothermal heat pump installations. In this contribution we present the until now fragmented data sets relevant to characterize and assess the geothermal potential of Svalbard. Data sets include petroleum and deep research boreholes drilled onshore Svalbard, 14 of which have recorded subsurface temperature data at depths below 200 m. Geothermal gradients on Spitsbergen vary from 24 °C/km in the west to 55 °C/km in the south-east, with an average of 33 °C/km. Four deep research boreholes were fully cored and analyzed for thermal conductivity. These analyses were complemented by thermal conductivity calculated from wireline logs in selected boreholes and four measurements on outcrop samples. 1D heat flow modelling on five boreholes calibrated with the measured thermal conductivities offers insights into heat transfer through the heterogeneous sedimentary succession. Offshore petroleum boreholes in the south-western Barents Sea and marine heat flow stations around Svalbard provide a regional framework for discussing spatial variation in heat flow onshore Svalbard, with emphasis on the effects of erosion and deposition on the thermal regime. We conclude that Svalbard's geology is well suited for geothermal exploration and potential production, though challenges related to permafrost, the presence of natural gas, heterogeneous reservoir quality and strongly lateral varying heat flow need to be adequately addressed prior to geothermal energy production. Specifically for Longyearbyen, high geothermal gradients of 40–43 °C/km in the nearest borehole (DH4) suggest promising sub-surface ... |
format |
Article in Journal/Newspaper |
author |
Senger, Kim Nuus, Matthijs Balling, Niels Betlem, Peter Birchall, Tom Christiansen, Hanne H. Elvebakk, Harald Fuchs, Sven Jochmann, Malte Klitzke, Peter Midttømme, Kirsti Olaussen, Snorre Pascal, Christophe Rodes, Nil Shestov, Aleksey Smyrak-Sikora, Aleksandra Thomas, Peter James |
author_facet |
Senger, Kim Nuus, Matthijs Balling, Niels Betlem, Peter Birchall, Tom Christiansen, Hanne H. Elvebakk, Harald Fuchs, Sven Jochmann, Malte Klitzke, Peter Midttømme, Kirsti Olaussen, Snorre Pascal, Christophe Rodes, Nil Shestov, Aleksey Smyrak-Sikora, Aleksandra Thomas, Peter James |
author_sort |
Senger, Kim |
title |
The subsurface thermal state of Svalbard and implications for geothermal potential |
title_short |
The subsurface thermal state of Svalbard and implications for geothermal potential |
title_full |
The subsurface thermal state of Svalbard and implications for geothermal potential |
title_fullStr |
The subsurface thermal state of Svalbard and implications for geothermal potential |
title_full_unstemmed |
The subsurface thermal state of Svalbard and implications for geothermal potential |
title_sort |
subsurface thermal state of svalbard and implications for geothermal potential |
publishDate |
2023 |
url |
https://pure.au.dk/portal/da/publications/the-subsurface-thermal-state-of-svalbard-and-implications-for-geothermal-potential(4b83029e-8271-4064-a126-2f866ca58832).html https://doi.org/10.1016/j.geothermics.2023.102702 http://www.scopus.com/inward/record.url?scp=85151299111&partnerID=8YFLogxK |
genre |
Arctic Archipelago Arctic Barents Sea Longyearbyen permafrost Svalbard Spitsbergen |
genre_facet |
Arctic Archipelago Arctic Barents Sea Longyearbyen permafrost Svalbard Spitsbergen |
op_source |
Senger , K , Nuus , M , Balling , N , Betlem , P , Birchall , T , Christiansen , H H , Elvebakk , H , Fuchs , S , Jochmann , M , Klitzke , P , Midttømme , K , Olaussen , S , Pascal , C , Rodes , N , Shestov , A , Smyrak-Sikora , A & Thomas , P J 2023 , ' The subsurface thermal state of Svalbard and implications for geothermal potential ' , Geothermics , vol. 111 , 102702 . https://doi.org/10.1016/j.geothermics.2023.102702 |
op_relation |
https://pure.au.dk/portal/da/publications/the-subsurface-thermal-state-of-svalbard-and-implications-for-geothermal-potential(4b83029e-8271-4064-a126-2f866ca58832).html |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1016/j.geothermics.2023.102702 |
container_title |
Geothermics |
container_volume |
111 |
container_start_page |
102702 |
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1786810404591108096 |