Neudert Mara mneudert@awi.de Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Bremerhaven AWI https://www.awi.de/ https://ror.org/032e6b942 Arndt Stefanie stefanie.arndt@awi.de https://www.awi.de/en/about-us/organisation/staff/single-view/stefanie-arndt.html 0000-0001-9782-3844 Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Bremerhaven AWI https://www.awi.de/ https://ror.org/032e6b942 2025 GEM-2 ice and platelet total thickness measurements for transect AFIN_ATKA_20221206 dataset https://doi.org/10.1594/PANGAEA.968088 2025-03-21T06:33:53 https://doi.org/10.1594/PANGAEA.968041 The snow+ice thickness (distance from the snow surface to the consolidated ice-platelet ice interface) and the underlying platelet ice thickness was measured by the electromagnetic induction (EM) method. On all transects, we used a multi-frequency EM instrument sensor (GEM-2 by Geophex Ltd) towed on a small sled behind a snowmobile (Hunkeler et al, 2016b). The instrument includes a real-time data processing unit including a GPS receiver which communicates with a pocket PC that is operates the sensor and records the EM and GPS data streams. The GEM-2 is a multi-frequency sensor that can transmit multiple configurable frequencies in the kHz range simultaneously. The sensor setup during AFIN used 5 frequencies with an approximately logarithmic spacing throughout the frequency range of the sensor (1.53, 5.31, 18.33, 63.03, and 93.09 kHz). The transect measurements are based on a sensor calibration, where the GEM-2 was placed in a zero-conductivity environment on the ice shelf before and after each transect to correct for signal offsets in instrument drift. The snow+ice and platelet ice thickness and conductivity retrieval of the calibrated GEM-2 surveys data was done by multi-frequncy inversion in the modified framework of the EMagPy (McLachlan et al., 2020) accounting for the bucking coil bias (Hunkeler at al., 2016a). To validate the retrieved thicknesses, we used the snow depth, ice thickness and platelet ice thickness from the drill hole measurements coincident with the GEM-2 transects. The coincident drill hole data can be found here: doi:10.1594/PANGAEA.968459. For more details we refer to the paper by Neudert et al, 2024: Improved sub-Ice Platelet Layer Mapping with multi-frequency EM Induction Sounding, in review at Journal of Applied Geophysics, Elsevier. Hunkeler Priska A priska.hunkeler@awi.de Hendricks Stefan stefan.hendricks@awi.de https://www.awi.de/en/about-us/organisation/staff/single-view/stefan-hendricks.html 0000-0002-1412-3146 Hoppmann Mario mario.hoppmann@awi.de https://www.awi.de/en/about-us/organisation/staff/single-view/mario-hoppmann.html 0000-0003-1294-9531 Farquharson Colin G Kalscheuer Thomas 0000-0003-3819-8182 Grab Melchior 0000-0002-8293-4872 Kaufmann Manuela S 0000-0003-3060-7375 Rabenstein Lasse Gerdes Rüdiger ruediger.gerdes@awi.de 2016 Improved 1D inversions for sea ice thickness and conductivity from electromagnetic induction data: Inclusion of nonlinearities caused by passive bucking journal article Geophysics 81(1) https://doi.org/10.1190/geo2015-0130.1 WA45-WA58 Hunkeler Priska A priska.hunkeler@awi.de Hoppmann Mario mario.hoppmann@awi.de https://www.awi.de/en/about-us/organisation/staff/single-view/mario-hoppmann.html 0000-0003-1294-9531 Hendricks Stefan stefan.hendricks@awi.de https://www.awi.de/en/about-us/organisation/staff/single-view/stefan-hendricks.html 0000-0002-1412-3146 Kalscheuer Thomas 0000-0003-3819-8182 Gerdes Rüdiger ruediger.gerdes@awi.de 2016 A glimpse beneath Antarctic landfast sea ice: platelet-layer volume from multi-frequency electromagnetic induction sounding Geophysical Research Letters 43(1) https://doi.org/10.1002/2015GL065074 222-231 McLachlan Paul Blanchy Guillaume Binley Andrew 2021 EMagPy: Open-source standalone software for processing, forward modeling and inversion of electromagnetic induction data journal article Computers & Geosciences 146 https://doi.org/10.1016/j.cageo.2020.104561 104561 -8.136683260999973 -7.8238966700000105 -70.68372962 -70.55233888 -7.953714347543212 -70.617317339005 2022-12-06T11:16:16 2022-12-06T19:33:59 AFIN Antarctic Fast Ice Network https://www.awi.de/en/science/climate-sciences/sea-ice-physics/projects/afin-antarctic-fast-ice-network.html Antarctic Climate & Ecosystems Cooperative Research Center, University of Tasmania ACE CRC http://acecrc.org.au https://ror.org/01nfmeh72 SPP1158 Priority Programme 1158 Antarctic Research with Comparable Investigations in Arctic Sea Ice Areas https://gepris.dfg.de/project/5472008 Fachbereich Biologie, Universität Rostock http://www.uni-rostock.de https://ror.org/03zdwsf69 AWI_SeaIce Sea Ice Physics @ AWI https://www.awi.de/en/science/climate-sciences/sea-ice-physics.html Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Bremerhaven AWI https://www.awi.de/ https://ror.org/032e6b942 German Research Foundation DFG http://www.dfg.de/en/ https://doi.org/10.13039/501100001659 5472008 Priority Programme 1158 Antarctic Research with Comparable Investigations in Arctic Sea Ice Areas https://gepris.dfg.de/project/5472008 AFIN_ATKA_20221206 -70.60538613 -8.136352436 Antarctica 2022-12-06T11:16:00 -70.60575325 -8.136683261 2022-12-06T19:33:00 ANT-Land_2022_AFIN ANT-Land_2022_AFIN AFIN2022, AFIN2022plus AFIN2022, AFIN2022plus 2022-06-01T00:00:00 2022-06-01 2023-01-04T00:00:00 2023-01-04 NEUMAYER III https://doi.org/10.17815/jlsrf-2-152 Arndt, Stefanie Arndt, Stefanie doi:10.57738/BzPM_0784_2024 dates not defined yet NEUMAYER III https://doi.org/10.17815/jlsrf-2-152 Ground-based Electromagnetic Induction Sounding Device GEM-2 1137375 CC-BY-4.0 Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/ LATITUDE Latitude http://en.wikipedia.org/wiki/ISO_6709 Neudert Mara mneudert@awi.de Latitude LONGITUDE Longitude http://en.wikipedia.org/wiki/ISO_6709 Neudert Mara mneudert@awi.de Longitude DATE/TIME Date/Time http://en.wikipedia.org/wiki/ISO_8601 Time T http://dbpedia.org/resource/Time Neudert Mara mneudert@awi.de Date/Time Distance Distance m distance http://purl.obolibrary.org/obo/PATO_0000040 Length L http://dbpedia.org/resource/Length Neudert Mara mneudert@awi.de along track Distance [m] (along track) Signal strength Sig str arbitrary units Signal Strength http://dbpedia.org/resource/Signal_strength Ground-based Electromagnetic Induction Sounding Device GEM-2 Neudert Mara mneudert@awi.de HCP1.66b1.035f1530h0.22i Sig str [arbitrary units] (HCP1.66b1.035f1530h0.22i, Gro...) Signal strength Sig str arbitrary units Signal Strength http://dbpedia.org/resource/Signal_strength Ground-based Electromagnetic Induction Sounding Device GEM-2 Neudert Mara mneudert@awi.de HCP1.66b1.035f5310h0.22i Sig str [arbitrary units] (HCP1.66b1.035f5310h0.22i, Gro...) Signal strength Sig str arbitrary units Signal Strength http://dbpedia.org/resource/Signal_strength Ground-based Electromagnetic Induction Sounding Device GEM-2 Neudert Mara mneudert@awi.de HCP1.66b1.035f18330h0.22i Sig str [arbitrary units] (HCP1.66b1.035f18330h0.22i, Gr...) Signal strength Sig str arbitrary units Signal Strength http://dbpedia.org/resource/Signal_strength Ground-based Electromagnetic Induction Sounding Device GEM-2 Neudert Mara mneudert@awi.de HCP1.66b1.035f63030h0.22i Sig str [arbitrary units] (HCP1.66b1.035f63030h0.22i, Gr...) Signal strength Sig str arbitrary units Signal Strength http://dbpedia.org/resource/Signal_strength Ground-based Electromagnetic Induction Sounding Device GEM-2 Neudert Mara mneudert@awi.de HCP1.66b1.035f93090h0.22i Sig str [arbitrary units] (HCP1.66b1.035f93090h0.22i, Gr...) Signal strength Sig str arbitrary units Signal Strength http://dbpedia.org/resource/Signal_strength Ground-based Electromagnetic Induction Sounding Device GEM-2 Neudert Mara mneudert@awi.de HCP1.66b1.035f1530h0.22q Sig str [arbitrary units] (HCP1.66b1.035f1530h0.22q, Gro...) Signal strength Sig str arbitrary units Signal Strength http://dbpedia.org/resource/Signal_strength Ground-based Electromagnetic Induction Sounding Device GEM-2 Neudert Mara mneudert@awi.de HCP1.66b1.035f5310h0.22q Sig str [arbitrary units] (HCP1.66b1.035f5310h0.22q, Gro...) Signal strength Sig str arbitrary units Signal Strength http://dbpedia.org/resource/Signal_strength Ground-based Electromagnetic Induction Sounding Device GEM-2 Neudert Mara mneudert@awi.de HCP1.66b1.035f18330h0.22q Sig str [arbitrary units] (HCP1.66b1.035f18330h0.22q, Gr...) Signal strength Sig str arbitrary units Signal Strength http://dbpedia.org/resource/Signal_strength Ground-based Electromagnetic Induction Sounding Device GEM-2 Neudert Mara mneudert@awi.de HCP1.66b1.035f63030h0.22q Sig str [arbitrary units] (HCP1.66b1.035f63030h0.22q, Gr...) Signal strength Sig str arbitrary units Signal Strength http://dbpedia.org/resource/Signal_strength Ground-based Electromagnetic Induction Sounding Device GEM-2 Neudert Mara mneudert@awi.de HCP1.66b1.035f93090h0.22q Sig str [arbitrary units] (HCP1.66b1.035f93090h0.22q, Gr...) Sea ice and snow thickness Sea ice+snow thick m sea ice http://purl.obolibrary.org/obo/ENVO_00002200 Length L http://dbpedia.org/resource/Length Multi-frequncy inversion, modified framework of the EMagPy (McLachlan et al., 2020) Neudert Mara mneudert@awi.de Sea ice+snow thick [m] (Multi-frequncy inversion, mod...) Sea ice and snow conductivity Sea ice+snow cond mS/m sea ice http://purl.obolibrary.org/obo/ENVO_00002200 Multi-frequncy inversion, modified framework of the EMagPy (McLachlan et al., 2020) Neudert Mara mneudert@awi.de Sea ice+snow cond [mS/m] (Multi-frequncy inversion, mod...) Sub-ice platelet-layer conductivity SIPL cond mS/m Multi-frequncy inversion, modified framework of the EMagPy (McLachlan et al., 2020) Neudert Mara mneudert@awi.de SIPL cond [mS/m] (Multi-frequncy inversion, mod...) Sub-ice platelet-layer thickness SIPL m Length L http://dbpedia.org/resource/Length Multi-frequncy inversion, modified framework of the EMagPy (McLachlan et al., 2020) Neudert Mara mneudert@awi.de SIPL [m] (Multi-frequncy inversion, mod...) citable AFIN Atka Bay DFG-SPP1158 Sea ice Sub-ice platelet layer author105373 author105374 author105375 author20774 author29227 author37588 author38865 author40339 author52036 author54351 author79615 author82641 author82642 author99249 award5 basis5304 campaign3397209 campaign48672 event3157917 funder20472 geocode1599 geocode1600 geocode1601 inst235 inst32 inst480 journal3907 journal6096 journal6097 license21 method13704 method16755 param132288 param135579 param501894 param528604 param528605 param92436 pi99249 project4068 project4201 project4234 ref109131 ref125964 ref68511 term1073628 term1079020 term20856 term43863 term43942 term43975 term47389 term51497 term51498 term51499 term68628