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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Language: | English |
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Copernicus Publications
2022
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Online Access: | https://doi.org/10.5194/essd-14-2209-2022 https://doaj.org/article/b0943d1b53d64d97855b00f78264f334 |
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ftdoajarticles:oai:doaj.org/article:b0943d1b53d64d97855b00f78264f334 2023-05-15T16:23:36+02:00 Greenland Geothermal Heat Flow Database and Map (Version 1) W. Colgan A. Wansing K. Mankoff M. Lösing J. Hopper K. Louden J. Ebbing F. G. Christiansen T. Ingeman-Nielsen L. C. Liljedahl J. A. MacGregor Á. Hjartarson S. Bernstein N. B. Karlsson S. Fuchs J. Hartikainen J. Liakka R. S. Fausto D. Dahl-Jensen A. Bjørk J.-O. Naslund F. Mørk Y. Martos N. Balling T. Funck K. K. Kjeldsen D. Petersen U. Gregersen G. Dam T. Nielsen S. A. Khan A. Løkkegaard 2022-05-01T00:00:00Z https://doi.org/10.5194/essd-14-2209-2022 https://doaj.org/article/b0943d1b53d64d97855b00f78264f334 EN eng Copernicus Publications https://essd.copernicus.org/articles/14/2209/2022/essd-14-2209-2022.pdf https://doaj.org/toc/1866-3508 https://doaj.org/toc/1866-3516 doi:10.5194/essd-14-2209-2022 1866-3508 1866-3516 https://doaj.org/article/b0943d1b53d64d97855b00f78264f334 Earth System Science Data, Vol 14, Pp 2209-2238 (2022) Environmental sciences GE1-350 Geology QE1-996.5 article 2022 ftdoajarticles https://doi.org/10.5194/essd-14-2209-2022 2022-12-30T23:51:47Z 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 55 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 ( < 40 mW 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 ( https://doi.org/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 Directory of Open Access Journals: DOAJ Articles Greenland Earth System Science Data 14 5 2209 2238 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Environmental sciences GE1-350 Geology QE1-996.5 |
spellingShingle |
Environmental sciences GE1-350 Geology QE1-996.5 W. Colgan A. Wansing K. Mankoff M. Lösing J. Hopper K. Louden J. Ebbing F. G. Christiansen T. Ingeman-Nielsen L. C. Liljedahl J. A. MacGregor Á. Hjartarson S. Bernstein N. B. Karlsson S. Fuchs J. Hartikainen J. Liakka R. S. Fausto D. Dahl-Jensen A. Bjørk J.-O. Naslund F. Mørk Y. Martos N. Balling T. Funck K. K. Kjeldsen D. Petersen U. Gregersen G. Dam T. Nielsen S. A. Khan A. Løkkegaard Greenland Geothermal Heat Flow Database and Map (Version 1) |
topic_facet |
Environmental sciences GE1-350 Geology QE1-996.5 |
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 55 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 ( < 40 mW 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 ( https://doi.org/10.22008/FK2/F9P03L Colgan and Wansing, 2021). |
format |
Article in Journal/Newspaper |
author |
W. Colgan A. Wansing K. Mankoff M. Lösing J. Hopper K. Louden J. Ebbing F. G. Christiansen T. Ingeman-Nielsen L. C. Liljedahl J. A. MacGregor Á. Hjartarson S. Bernstein N. B. Karlsson S. Fuchs J. Hartikainen J. Liakka R. S. Fausto D. Dahl-Jensen A. Bjørk J.-O. Naslund F. Mørk Y. Martos N. Balling T. Funck K. K. Kjeldsen D. Petersen U. Gregersen G. Dam T. Nielsen S. A. Khan A. Løkkegaard |
author_facet |
W. Colgan A. Wansing K. Mankoff M. Lösing J. Hopper K. Louden J. Ebbing F. G. Christiansen T. Ingeman-Nielsen L. C. Liljedahl J. A. MacGregor Á. Hjartarson S. Bernstein N. B. Karlsson S. Fuchs J. Hartikainen J. Liakka R. S. Fausto D. Dahl-Jensen A. Bjørk J.-O. Naslund F. Mørk Y. Martos N. Balling T. Funck K. K. Kjeldsen D. Petersen U. Gregersen G. Dam T. Nielsen S. A. Khan A. Løkkegaard |
author_sort |
W. Colgan |
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) |
publisher |
Copernicus Publications |
publishDate |
2022 |
url |
https://doi.org/10.5194/essd-14-2209-2022 https://doaj.org/article/b0943d1b53d64d97855b00f78264f334 |
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 |
Earth System Science Data, Vol 14, Pp 2209-2238 (2022) |
op_relation |
https://essd.copernicus.org/articles/14/2209/2022/essd-14-2209-2022.pdf https://doaj.org/toc/1866-3508 https://doaj.org/toc/1866-3516 doi:10.5194/essd-14-2209-2022 1866-3508 1866-3516 https://doaj.org/article/b0943d1b53d64d97855b00f78264f334 |
op_doi |
https://doi.org/10.5194/essd-14-2209-2022 |
container_title |
Earth System Science Data |
container_volume |
14 |
container_issue |
5 |
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2209 |
op_container_end_page |
2238 |
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