Publication Abstracts

Colgan et al. 2022

Colgan, W., 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, and A. Løkkegaard, 2022: Greenland Geothermal Heat Flow Database and Map (Version 1). Earth Syst. Sci. Data, 14, no. 5, 2209-2238, doi:10.5194/essd-14-2209-2022.

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/m2) 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.

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BibTeX Citation

  author={Colgan, W. and Wansing, A. and Mankoff, K. and Lösing, M. and Hopper, J. and Louden, K. and Ebbing, J. and Christiansen, F. G. and Ingeman-Nielsen, T. and Liljedahl, L. C. and MacGregor, J. A. and Hjartarson, Á. and Bernstein, S. and Karlsson, N. B. and Fuchs, S. and Hartikainen, J. and Liakka, J. and Fausto, R. S. and Dahl-Jensen, D. and Bjørk, A. and Naslund, J.-O. and Mørk, F. and Martos, Y. and Balling, N. and Funck, T. and Kjeldsen, K. K. and Petersen, D. and Gregersen, U. and Dam, G. and Nielsen, T. and Khan, S. A. and Løkkegaard, A.},
  title={Greenland Geothermal Heat Flow Database and Map (Version 1)},
  journal={Earth Syst. Sci. Data},

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RIS Citation

ID  - co08310i
AU  - Colgan, W.
AU  - Wansing, A.
AU  - Mankoff, K.
AU  - Lösing, M.
AU  - Hopper, J.
AU  - Louden, K.
AU  - Ebbing, J.
AU  - Christiansen, F. G.
AU  - Ingeman-Nielsen, T.
AU  - Liljedahl, L. C.
AU  - MacGregor, J. A.
AU  - Hjartarson, Á.
AU  - Bernstein, S.
AU  - Karlsson, N. B.
AU  - Fuchs, S.
AU  - Hartikainen, J.
AU  - Liakka, J.
AU  - Fausto, R. S.
AU  - Dahl-Jensen, D.
AU  - Bjørk, A.
AU  - Naslund, J.-O.
AU  - Mørk, F.
AU  - Martos, Y.
AU  - Balling, N.
AU  - Funck, T.
AU  - Kjeldsen, K. K.
AU  - Petersen, D.
AU  - Gregersen, U.
AU  - Dam, G.
AU  - Nielsen, T.
AU  - Khan, S. A.
AU  - Løkkegaard, A.
PY  - 2022
TI  - Greenland Geothermal Heat Flow Database and Map (Version 1)
JA  - Earth Syst. Sci. Data
VL  - 14
IS  - 5
SP  - 2209
EP  - 2238
DO  - 10.5194/essd-14-2209-2022
ER  -

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