Geothermal heat flow beneath Thwaites Glacier in West Antarctica inferred from aeromagnetic data
We investigated geothermal heat flow derived from new and existing magnetic anomaly data in the Amundsen Sea sector of West Antarctica. The magnetic anomaly data set (ASE_MagneticCompilation_Dziadeketal.tif) results from a compilation of surveys from RV Polarstern expedition PS104 (2017) and existin...
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ftpangaea:oai:pangaea.de:doi:10.1594/PANGAEA.932452 2024-05-19T07:28:23+00:00 Geothermal heat flow beneath Thwaites Glacier in West Antarctica inferred from aeromagnetic data Dziadek, Ricarda Ferraccioli, Fausto Gohl, Karsten MEDIAN LATITUDE: -73.035000 * MEDIAN LONGITUDE: -108.245000 * SOUTH-BOUND LATITUDE: -82.060000 * WEST-BOUND LONGITUDE: -151.160000 * NORTH-BOUND LATITUDE: -64.010000 * EAST-BOUND LONGITUDE: -65.330000 2021 text/tab-separated-values, 26 data points https://doi.pangaea.de/10.1594/PANGAEA.932452 https://doi.org/10.1594/PANGAEA.932452 en eng PANGAEA Dziadek, Ricarda; Ferraccioli, Fausto; Gohl, Karsten (2021): High geothermal heat flow beneath Thwaites Glacier in West Antarctica inferred from aeromagnetic data. Communications Earth & Environment, 2(1), 162, https://doi.org/10.1038/s43247-021-00242-3 https://doi.pangaea.de/10.1594/PANGAEA.932452 https://doi.org/10.1594/PANGAEA.932452 CC-BY-4.0: Creative Commons Attribution 4.0 International Access constraints: unrestricted info:eu-repo/semantics/openAccess Amundsen_Sea_heatflow Binary Object Binary Object (File Size) Curie Depth File content Geothermal heat flow LATITUDE LONGITUDE Magnetic Anomaly MULT Multiple investigations Smith Glacier Thwaites Glacier West Antarctica Dataset 2021 ftpangaea https://doi.org/10.1594/PANGAEA.932452 2024-04-23T23:36:33Z We investigated geothermal heat flow derived from new and existing magnetic anomaly data in the Amundsen Sea sector of West Antarctica. The magnetic anomaly data set (ASE_MagneticCompilation_Dziadeketal.tif) results from a compilation of surveys from RV Polarstern expedition PS104 (2017) and existing, partly unpublished data from various campaigns (TORUS, BBAS, AGASEA and ADMAP2.0). Further details of the processing are given in the manuscript. During PS104 the on board BO-105 helicopter was equipped with a caesium-vapour magnetometer, which was towed with a 30 m long cable and data values are given in Nanotesla. Curie depth estimates were calculated and served as a boundary condition for geothermal modeling. We split the magnetic anomaly grid into "windows", with 200x200km and a 300x300km dimensions and apply spectral methods to obtain the curie depth. Depths are calculated using GMT fft tool end errors are standard deviation from fft. The results for the respective window sizes are given in 200km_Dziadek_etal_CurieDepth_Results.csv/.nc and 300km_Dziadek_etal_CurieDepth_Results.csv/.nc. .csv corresponds to xyz data and .nc corresponds to the gridded data in NetCDF format, respectively. The geothermal heat flow models (200km_GHF_windowCenters.csv/.nc and 300km_GHF_windowCenters.csv/.nc) are based on Curie depth estimates in a steady-state model of a homogeneous material with a constant geothermal gradient and thermal conductivity. The km-prefix indicates which magnetic window size was used and values for geothermal heat flow are given at the center of each window in Milliwatts per Squaremeter. Uncertainties of geothermal heat flow (200km_GHF_uncertainty.csv/.nc and 300km_GHF_uncertainty.csv/.nc) are based on Curie depth standard deviation. This dataset accompanies the manuscript “High geothermal heat flow beneath Thwaites Glacier in West Antarctica inferred from aeromagnetic data", R. Dziadek, F. Ferraccioli & K. Gohl, Communications Earth & Environment, 2021. Dataset Amundsen Sea Antarc* Antarctica Smith Glacier Thwaites Glacier West Antarctica PANGAEA - Data Publisher for Earth & Environmental Science ENVELOPE(-151.160000,-65.330000,-64.010000,-82.060000) |
institution |
Open Polar |
collection |
PANGAEA - Data Publisher for Earth & Environmental Science |
op_collection_id |
ftpangaea |
language |
English |
topic |
Amundsen_Sea_heatflow Binary Object Binary Object (File Size) Curie Depth File content Geothermal heat flow LATITUDE LONGITUDE Magnetic Anomaly MULT Multiple investigations Smith Glacier Thwaites Glacier West Antarctica |
spellingShingle |
Amundsen_Sea_heatflow Binary Object Binary Object (File Size) Curie Depth File content Geothermal heat flow LATITUDE LONGITUDE Magnetic Anomaly MULT Multiple investigations Smith Glacier Thwaites Glacier West Antarctica Dziadek, Ricarda Ferraccioli, Fausto Gohl, Karsten Geothermal heat flow beneath Thwaites Glacier in West Antarctica inferred from aeromagnetic data |
topic_facet |
Amundsen_Sea_heatflow Binary Object Binary Object (File Size) Curie Depth File content Geothermal heat flow LATITUDE LONGITUDE Magnetic Anomaly MULT Multiple investigations Smith Glacier Thwaites Glacier West Antarctica |
description |
We investigated geothermal heat flow derived from new and existing magnetic anomaly data in the Amundsen Sea sector of West Antarctica. The magnetic anomaly data set (ASE_MagneticCompilation_Dziadeketal.tif) results from a compilation of surveys from RV Polarstern expedition PS104 (2017) and existing, partly unpublished data from various campaigns (TORUS, BBAS, AGASEA and ADMAP2.0). Further details of the processing are given in the manuscript. During PS104 the on board BO-105 helicopter was equipped with a caesium-vapour magnetometer, which was towed with a 30 m long cable and data values are given in Nanotesla. Curie depth estimates were calculated and served as a boundary condition for geothermal modeling. We split the magnetic anomaly grid into "windows", with 200x200km and a 300x300km dimensions and apply spectral methods to obtain the curie depth. Depths are calculated using GMT fft tool end errors are standard deviation from fft. The results for the respective window sizes are given in 200km_Dziadek_etal_CurieDepth_Results.csv/.nc and 300km_Dziadek_etal_CurieDepth_Results.csv/.nc. .csv corresponds to xyz data and .nc corresponds to the gridded data in NetCDF format, respectively. The geothermal heat flow models (200km_GHF_windowCenters.csv/.nc and 300km_GHF_windowCenters.csv/.nc) are based on Curie depth estimates in a steady-state model of a homogeneous material with a constant geothermal gradient and thermal conductivity. The km-prefix indicates which magnetic window size was used and values for geothermal heat flow are given at the center of each window in Milliwatts per Squaremeter. Uncertainties of geothermal heat flow (200km_GHF_uncertainty.csv/.nc and 300km_GHF_uncertainty.csv/.nc) are based on Curie depth standard deviation. This dataset accompanies the manuscript “High geothermal heat flow beneath Thwaites Glacier in West Antarctica inferred from aeromagnetic data", R. Dziadek, F. Ferraccioli & K. Gohl, Communications Earth & Environment, 2021. |
format |
Dataset |
author |
Dziadek, Ricarda Ferraccioli, Fausto Gohl, Karsten |
author_facet |
Dziadek, Ricarda Ferraccioli, Fausto Gohl, Karsten |
author_sort |
Dziadek, Ricarda |
title |
Geothermal heat flow beneath Thwaites Glacier in West Antarctica inferred from aeromagnetic data |
title_short |
Geothermal heat flow beneath Thwaites Glacier in West Antarctica inferred from aeromagnetic data |
title_full |
Geothermal heat flow beneath Thwaites Glacier in West Antarctica inferred from aeromagnetic data |
title_fullStr |
Geothermal heat flow beneath Thwaites Glacier in West Antarctica inferred from aeromagnetic data |
title_full_unstemmed |
Geothermal heat flow beneath Thwaites Glacier in West Antarctica inferred from aeromagnetic data |
title_sort |
geothermal heat flow beneath thwaites glacier in west antarctica inferred from aeromagnetic data |
publisher |
PANGAEA |
publishDate |
2021 |
url |
https://doi.pangaea.de/10.1594/PANGAEA.932452 https://doi.org/10.1594/PANGAEA.932452 |
op_coverage |
MEDIAN LATITUDE: -73.035000 * MEDIAN LONGITUDE: -108.245000 * SOUTH-BOUND LATITUDE: -82.060000 * WEST-BOUND LONGITUDE: -151.160000 * NORTH-BOUND LATITUDE: -64.010000 * EAST-BOUND LONGITUDE: -65.330000 |
long_lat |
ENVELOPE(-151.160000,-65.330000,-64.010000,-82.060000) |
genre |
Amundsen Sea Antarc* Antarctica Smith Glacier Thwaites Glacier West Antarctica |
genre_facet |
Amundsen Sea Antarc* Antarctica Smith Glacier Thwaites Glacier West Antarctica |
op_relation |
Dziadek, Ricarda; Ferraccioli, Fausto; Gohl, Karsten (2021): High geothermal heat flow beneath Thwaites Glacier in West Antarctica inferred from aeromagnetic data. Communications Earth & Environment, 2(1), 162, https://doi.org/10.1038/s43247-021-00242-3 https://doi.pangaea.de/10.1594/PANGAEA.932452 https://doi.org/10.1594/PANGAEA.932452 |
op_rights |
CC-BY-4.0: Creative Commons Attribution 4.0 International Access constraints: unrestricted info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/10.1594/PANGAEA.932452 |
_version_ |
1799472611788324864 |