Greenland Geothermal Heat Flow Database and Map (Version 1)
We compile and analyze all available geothermal heat flow measurements collected in and around Greenland into a new database of 419 sites and generate an accompanying spatial map. This database includes 290 sites previously reported by the International Heat Flow Commission (IHFC), for which we now...
Published in: | Earth System Science Data |
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Format: | Article in Journal/Newspaper |
Language: | English |
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2022
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Online Access: | https://curis.ku.dk/portal/da/publications/greenland-geothermal-heat-flow-database-and-map-version-1(328cea1f-d61e-49c9-98b3-5bc4931519a1).html https://doi.org/10.5194/essd-14-2209-2022 https://curis.ku.dk/ws/files/307368864/essd_14_2209_2022.pdf |
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ftcopenhagenunip:oai:pure.atira.dk:publications/328cea1f-d61e-49c9-98b3-5bc4931519a1 2024-06-09T07:46:13+00:00 Greenland Geothermal Heat Flow Database and Map (Version 1) Colgan, William Wansing, Agnes Mankoff, Kenneth Lösing, Mareen Hopper, John Louden, Keith Ebbing, Jörg Christiansen, Flemming G. Ingeman-Nielsen, Thomas Liljedahl, Lillemor Claesson MacGregor, Joseph A. Hjartarson, Árni Bernstein, Stefan Karlsson, Nanna B. Fuchs, Sven Hartikainen, Juha Liakka, Johan Fausto, Robert S. Dahl-Jensen, Dorthe Bjørk, Anders Naslund, Jens Ove Mørk, Finn Martos, Yasmina Balling, Niels Funck, Thomas Kjeldsen, Kristian K. Petersen, Dorthe Gregersen, Ulrik Dam, Gregers Nielsen, Tove Khan, Shfaqat A. Løkkegaard, Anja 2022 application/pdf https://curis.ku.dk/portal/da/publications/greenland-geothermal-heat-flow-database-and-map-version-1(328cea1f-d61e-49c9-98b3-5bc4931519a1).html https://doi.org/10.5194/essd-14-2209-2022 https://curis.ku.dk/ws/files/307368864/essd_14_2209_2022.pdf eng eng info:eu-repo/semantics/openAccess Colgan , W , Wansing , A , Mankoff , K , Lösing , M , Hopper , J , Louden , K , Ebbing , J , Christiansen , F G , Ingeman-Nielsen , T , Liljedahl , L C , MacGregor , J A , Hjartarson , Á , Bernstein , S , Karlsson , N B , Fuchs , S , Hartikainen , J , Liakka , J , Fausto , R S , Dahl-Jensen , D , Bjørk , A , Naslund , J O , Mørk , F , Martos , Y , Balling , N , Funck , T , Kjeldsen , K K , Petersen , D , Gregersen , U , Dam , G , Nielsen , T , Khan , S A & Løkkegaard , A 2022 , ' Greenland Geothermal Heat Flow Database and Map (Version 1) ' , Earth System Science Data , vol. 14 , no. 5 , pp. 2209-2238 . https://doi.org/10.5194/essd-14-2209-2022 article 2022 ftcopenhagenunip https://doi.org/10.5194/essd-14-2209-2022 2024-05-16T11:29:24Z We compile and analyze all available geothermal heat flow measurements collected in and around Greenland into a new database of 419 sites and generate an accompanying spatial map. This database includes 290 sites previously reported by the International Heat Flow Commission (IHFC), for which we now standardize measurement and metadata quality. This database also includes 129 new sites, which have not been previously reported by the IHFC. These new sites consist of 88 offshore measurements and 41 onshore measurements, of which 24 are subglacial. We employ machine learning to synthesize these in situ measurements into a gridded geothermal heat flow model that is consistent across both continental and marine areas in and around Greenland. This model has a native horizontal resolution of 55ĝ€¯km. In comparison to five existing Greenland geothermal heat flow models, our model has the lowest mean geothermal heat flow for Greenland onshore areas. Our modeled heat flow in central North Greenland is highly sensitive to whether the NGRIP (North GReenland Ice core Project) elevated heat flow anomaly is included in the training dataset. Our model's most distinctive spatial feature is pronounced low geothermal heat flow (<ĝ€¯40ĝ€¯mWĝ€¯m-2) across the North Atlantic Craton of southern Greenland. Crucially, our model does not show an area of elevated heat flow that might be interpreted as remnant from the Icelandic plume track. Finally, we discuss the substantial influence of paleoclimatic and other corrections on geothermal heat flow measurements in Greenland. The in situ measurement database and gridded heat flow model, as well as other supporting materials, are freely available from the GEUS Dataverse (10.22008/FK2/F9P03L; Colgan and Wansing, 2021). Article in Journal/Newspaper Greenland Greenland ice core Greenland Ice core Project ice core NGRIP North Atlantic North Greenland North Greenland Ice Core Project University of Copenhagen: Research Greenland Earth System Science Data 14 5 2209 2238 |
institution |
Open Polar |
collection |
University of Copenhagen: Research |
op_collection_id |
ftcopenhagenunip |
language |
English |
description |
We compile and analyze all available geothermal heat flow measurements collected in and around Greenland into a new database of 419 sites and generate an accompanying spatial map. This database includes 290 sites previously reported by the International Heat Flow Commission (IHFC), for which we now standardize measurement and metadata quality. This database also includes 129 new sites, which have not been previously reported by the IHFC. These new sites consist of 88 offshore measurements and 41 onshore measurements, of which 24 are subglacial. We employ machine learning to synthesize these in situ measurements into a gridded geothermal heat flow model that is consistent across both continental and marine areas in and around Greenland. This model has a native horizontal resolution of 55ĝ€¯km. In comparison to five existing Greenland geothermal heat flow models, our model has the lowest mean geothermal heat flow for Greenland onshore areas. Our modeled heat flow in central North Greenland is highly sensitive to whether the NGRIP (North GReenland Ice core Project) elevated heat flow anomaly is included in the training dataset. Our model's most distinctive spatial feature is pronounced low geothermal heat flow (<ĝ€¯40ĝ€¯mWĝ€¯m-2) across the North Atlantic Craton of southern Greenland. Crucially, our model does not show an area of elevated heat flow that might be interpreted as remnant from the Icelandic plume track. Finally, we discuss the substantial influence of paleoclimatic and other corrections on geothermal heat flow measurements in Greenland. The in situ measurement database and gridded heat flow model, as well as other supporting materials, are freely available from the GEUS Dataverse (10.22008/FK2/F9P03L; Colgan and Wansing, 2021). |
format |
Article in Journal/Newspaper |
author |
Colgan, William Wansing, Agnes Mankoff, Kenneth Lösing, Mareen Hopper, John Louden, Keith Ebbing, Jörg Christiansen, Flemming G. Ingeman-Nielsen, Thomas Liljedahl, Lillemor Claesson MacGregor, Joseph A. Hjartarson, Árni Bernstein, Stefan Karlsson, Nanna B. Fuchs, Sven Hartikainen, Juha Liakka, Johan Fausto, Robert S. Dahl-Jensen, Dorthe Bjørk, Anders Naslund, Jens Ove Mørk, Finn Martos, Yasmina Balling, Niels Funck, Thomas Kjeldsen, Kristian K. Petersen, Dorthe Gregersen, Ulrik Dam, Gregers Nielsen, Tove Khan, Shfaqat A. Løkkegaard, Anja |
spellingShingle |
Colgan, William Wansing, Agnes Mankoff, Kenneth Lösing, Mareen Hopper, John Louden, Keith Ebbing, Jörg Christiansen, Flemming G. Ingeman-Nielsen, Thomas Liljedahl, Lillemor Claesson MacGregor, Joseph A. Hjartarson, Árni Bernstein, Stefan Karlsson, Nanna B. Fuchs, Sven Hartikainen, Juha Liakka, Johan Fausto, Robert S. Dahl-Jensen, Dorthe Bjørk, Anders Naslund, Jens Ove Mørk, Finn Martos, Yasmina Balling, Niels Funck, Thomas Kjeldsen, Kristian K. Petersen, Dorthe Gregersen, Ulrik Dam, Gregers Nielsen, Tove Khan, Shfaqat A. Løkkegaard, Anja Greenland Geothermal Heat Flow Database and Map (Version 1) |
author_facet |
Colgan, William Wansing, Agnes Mankoff, Kenneth Lösing, Mareen Hopper, John Louden, Keith Ebbing, Jörg Christiansen, Flemming G. Ingeman-Nielsen, Thomas Liljedahl, Lillemor Claesson MacGregor, Joseph A. Hjartarson, Árni Bernstein, Stefan Karlsson, Nanna B. Fuchs, Sven Hartikainen, Juha Liakka, Johan Fausto, Robert S. Dahl-Jensen, Dorthe Bjørk, Anders Naslund, Jens Ove Mørk, Finn Martos, Yasmina Balling, Niels Funck, Thomas Kjeldsen, Kristian K. Petersen, Dorthe Gregersen, Ulrik Dam, Gregers Nielsen, Tove Khan, Shfaqat A. Løkkegaard, Anja |
author_sort |
Colgan, William |
title |
Greenland Geothermal Heat Flow Database and Map (Version 1) |
title_short |
Greenland Geothermal Heat Flow Database and Map (Version 1) |
title_full |
Greenland Geothermal Heat Flow Database and Map (Version 1) |
title_fullStr |
Greenland Geothermal Heat Flow Database and Map (Version 1) |
title_full_unstemmed |
Greenland Geothermal Heat Flow Database and Map (Version 1) |
title_sort |
greenland geothermal heat flow database and map (version 1) |
publishDate |
2022 |
url |
https://curis.ku.dk/portal/da/publications/greenland-geothermal-heat-flow-database-and-map-version-1(328cea1f-d61e-49c9-98b3-5bc4931519a1).html https://doi.org/10.5194/essd-14-2209-2022 https://curis.ku.dk/ws/files/307368864/essd_14_2209_2022.pdf |
geographic |
Greenland |
geographic_facet |
Greenland |
genre |
Greenland Greenland ice core Greenland Ice core Project ice core NGRIP North Atlantic North Greenland North Greenland Ice Core Project |
genre_facet |
Greenland Greenland ice core Greenland Ice core Project ice core NGRIP North Atlantic North Greenland North Greenland Ice Core Project |
op_source |
Colgan , W , Wansing , A , Mankoff , K , Lösing , M , Hopper , J , Louden , K , Ebbing , J , Christiansen , F G , Ingeman-Nielsen , T , Liljedahl , L C , MacGregor , J A , Hjartarson , Á , Bernstein , S , Karlsson , N B , Fuchs , S , Hartikainen , J , Liakka , J , Fausto , R S , Dahl-Jensen , D , Bjørk , A , Naslund , J O , Mørk , F , Martos , Y , Balling , N , Funck , T , Kjeldsen , K K , Petersen , D , Gregersen , U , Dam , G , Nielsen , T , Khan , S A & Løkkegaard , A 2022 , ' Greenland Geothermal Heat Flow Database and Map (Version 1) ' , Earth System Science Data , vol. 14 , no. 5 , pp. 2209-2238 . https://doi.org/10.5194/essd-14-2209-2022 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.5194/essd-14-2209-2022 |
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Earth System Science Data |
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