Geothermal Heat Flux for Greenland
Geothermal Heat Flux dataset from Rogozhina et al. 2016 (DOI: 10.1038/NGEO2689), with latitude, longitude, Geothermal Heat Flux in mW/m2 at a depth of 5 km. Melting at the base of the Greenland ice sheet explained by Iceland hotspot history Irina Rogozhina, Alexey G. Petrunin, Alan P. M. Vaughan, Be...
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ftdatacite:10.5281/zenodo.3548190 2023-05-15T16:23:31+02:00 Geothermal Heat Flux for Greenland Irina, Rogozhina 2019 https://dx.doi.org/10.5281/zenodo.3548190 https://zenodo.org/record/3548190 unknown Zenodo https://dx.doi.org/10.5281/zenodo.3548189 Open Access Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode cc-by-4.0 info:eu-repo/semantics/openAccess CC-BY dataset Dataset 2019 ftdatacite https://doi.org/10.5281/zenodo.3548190 https://doi.org/10.5281/zenodo.3548189 2021-11-05T12:55:41Z Geothermal Heat Flux dataset from Rogozhina et al. 2016 (DOI: 10.1038/NGEO2689), with latitude, longitude, Geothermal Heat Flux in mW/m2 at a depth of 5 km. Melting at the base of the Greenland ice sheet explained by Iceland hotspot history Irina Rogozhina, Alexey G. Petrunin, Alan P. M. Vaughan, Bernhard Steinberger, Jesse V. Johnson, Mikhail K. Kaban, Reinhard Calov, Florian Rickers, Maik Thomas and Ivan Koulakov Ice-penetrating radar and ice core drilling4 have shown that large parts of the north-central Greenland ice sheet are melting from below. It has been argued that basal ice melt is due to the anomalously high geothermal flux that has also influenced the development of the longest ice stream in Greenland. Here we estimate the geothermal flux beneath the Greenland ice sheet and identify a 1,200-km-long and 400-km-wide geothermal anomaly beneath the thick ice cover. We suggest that this anomaly explains the observed melting of the ice sheet’s base, which drives the vigorous subglacial hydrology and controls the position of the head of the enigmatic 750-km-long northeastern Greenland ice stream. Our combined analysis of independent seismic, gravity and tectonic data implies that the geothermal anomaly, which crosses Greenland from west to east, was formed by Greenland’s passage over the Iceland mantle plume between roughly80and 35 million years ago. We conclude that the complexity of the present-day subglacial hydrology and dynamic features of the north-central Greenland ice sheet originated in tectonic events that pre-date the onset of glaciation in Greenland by many tens of millions of years. Dataset Greenland ice core Ice Sheet Iceland DataCite Metadata Store (German National Library of Science and Technology) Greenland Kaban ENVELOPE(158.700,158.700,52.967,52.967) |
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Open Polar |
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DataCite Metadata Store (German National Library of Science and Technology) |
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language |
unknown |
description |
Geothermal Heat Flux dataset from Rogozhina et al. 2016 (DOI: 10.1038/NGEO2689), with latitude, longitude, Geothermal Heat Flux in mW/m2 at a depth of 5 km. Melting at the base of the Greenland ice sheet explained by Iceland hotspot history Irina Rogozhina, Alexey G. Petrunin, Alan P. M. Vaughan, Bernhard Steinberger, Jesse V. Johnson, Mikhail K. Kaban, Reinhard Calov, Florian Rickers, Maik Thomas and Ivan Koulakov Ice-penetrating radar and ice core drilling4 have shown that large parts of the north-central Greenland ice sheet are melting from below. It has been argued that basal ice melt is due to the anomalously high geothermal flux that has also influenced the development of the longest ice stream in Greenland. Here we estimate the geothermal flux beneath the Greenland ice sheet and identify a 1,200-km-long and 400-km-wide geothermal anomaly beneath the thick ice cover. We suggest that this anomaly explains the observed melting of the ice sheet’s base, which drives the vigorous subglacial hydrology and controls the position of the head of the enigmatic 750-km-long northeastern Greenland ice stream. Our combined analysis of independent seismic, gravity and tectonic data implies that the geothermal anomaly, which crosses Greenland from west to east, was formed by Greenland’s passage over the Iceland mantle plume between roughly80and 35 million years ago. We conclude that the complexity of the present-day subglacial hydrology and dynamic features of the north-central Greenland ice sheet originated in tectonic events that pre-date the onset of glaciation in Greenland by many tens of millions of years. |
format |
Dataset |
author |
Irina, Rogozhina |
spellingShingle |
Irina, Rogozhina Geothermal Heat Flux for Greenland |
author_facet |
Irina, Rogozhina |
author_sort |
Irina, Rogozhina |
title |
Geothermal Heat Flux for Greenland |
title_short |
Geothermal Heat Flux for Greenland |
title_full |
Geothermal Heat Flux for Greenland |
title_fullStr |
Geothermal Heat Flux for Greenland |
title_full_unstemmed |
Geothermal Heat Flux for Greenland |
title_sort |
geothermal heat flux for greenland |
publisher |
Zenodo |
publishDate |
2019 |
url |
https://dx.doi.org/10.5281/zenodo.3548190 https://zenodo.org/record/3548190 |
long_lat |
ENVELOPE(158.700,158.700,52.967,52.967) |
geographic |
Greenland Kaban |
geographic_facet |
Greenland Kaban |
genre |
Greenland ice core Ice Sheet Iceland |
genre_facet |
Greenland ice core Ice Sheet Iceland |
op_relation |
https://dx.doi.org/10.5281/zenodo.3548189 |
op_rights |
Open Access Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/legalcode cc-by-4.0 info:eu-repo/semantics/openAccess |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.5281/zenodo.3548190 https://doi.org/10.5281/zenodo.3548189 |
_version_ |
1766011773442326528 |