de.pangaea.dataset968088 und de.pangaea.dataset968041 dataset PANGAEA
info@pangaea.de
https://www.pangaea.de/ information pointOfContact 2026-07-14T12:19:01Z https://doi.pangaea.de/10.1594/PANGAEA.968088 <gco:CharacterString>GEM-2 ice and platelet total thickness measurements for transect AFIN_ATKA_20221206</gco:CharacterString> 2025-03-21T06:33:53 publication https://doi.org/10.1594/PANGAEA.968088 Neudert, Mara
mneudert@awi.de
author Arndt, Stefanie
stefanie.arndt@awi.de
https://orcid.org/0000-0001-9782-3844 information author PANGAEA
info@pangaea.de
https://www.pangaea.de/ information publisher tableDigital 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. completed Neudert, Mara
mneudert@awi.de
principalInvestigator AFIN Atka Bay DFG-SPP1158 Sea ice Sub-ice platelet layer theme <gco:CharacterString>PANGAEA Keyword List</gco:CharacterString> 1995-01-01 creation PANGAEA
info@pangaea.de
https://www.pangaea.de/ information pointOfContact AFIN Antarctic Fast Ice Network SPP1158 Priority Programme 1158 Antarctic Research with Comparable Investigations in Arctic Sea Ice Areas AWI_SeaIce Sea Ice Physics @ AWI theme <gco:CharacterString>PANGAEA Project List</gco:CharacterString> 1995-01-01 creation PANGAEA
info@pangaea.de
https://www.pangaea.de/ information pointOfContact copyright copyright CC-BY-4.0: Creative Commons Attribution 4.0 International textTable und geoscientificInformation -8.136683260999973 -7.8238966700000105 -70.68372962 -70.55233888 2022-12-06T11:16:16 2022-12-06T19:33:59 LATITUDE thematicClassification LONGITUDE thematicClassification DATE/TIME thematicClassification Distance physicalMeasurement along track m m Signal strength physicalMeasurement Ground-based Electromagnetic Induction Sounding Device; HCP1.66b1.035f1530h0.22i arbitrary units arbitrary units Signal strength physicalMeasurement Ground-based Electromagnetic Induction Sounding Device; HCP1.66b1.035f5310h0.22i arbitrary units arbitrary units Signal strength physicalMeasurement Ground-based Electromagnetic Induction Sounding Device; HCP1.66b1.035f18330h0.22i arbitrary units arbitrary units Signal strength physicalMeasurement Ground-based Electromagnetic Induction Sounding Device; HCP1.66b1.035f63030h0.22i arbitrary units arbitrary units Signal strength physicalMeasurement Ground-based Electromagnetic Induction Sounding Device; HCP1.66b1.035f93090h0.22i arbitrary units arbitrary units Signal strength physicalMeasurement Ground-based Electromagnetic Induction Sounding Device; HCP1.66b1.035f1530h0.22q arbitrary units arbitrary units Signal strength physicalMeasurement Ground-based Electromagnetic Induction Sounding Device; HCP1.66b1.035f5310h0.22q arbitrary units arbitrary units Signal strength physicalMeasurement Ground-based Electromagnetic Induction Sounding Device; HCP1.66b1.035f18330h0.22q arbitrary units arbitrary units Signal strength physicalMeasurement Ground-based Electromagnetic Induction Sounding Device; HCP1.66b1.035f63030h0.22q arbitrary units arbitrary units Signal strength physicalMeasurement Ground-based Electromagnetic Induction Sounding Device; HCP1.66b1.035f93090h0.22q arbitrary units arbitrary units Sea ice and snow thickness physicalMeasurement Multi-frequncy inversion, modified framework of the EMagPy (McLachlan et al., 2020) m m Sea ice and snow conductivity physicalMeasurement Multi-frequncy inversion, modified framework of the EMagPy (McLachlan et al., 2020) mS/m mS/m Sub-ice platelet-layer conductivity physicalMeasurement Multi-frequncy inversion, modified framework of the EMagPy (McLachlan et al., 2020) mS/m mS/m Sub-ice platelet-layer thickness physicalMeasurement Multi-frequncy inversion, modified framework of the EMagPy (McLachlan et al., 2020) m m text/tab-separated-values unknown https://doi.pangaea.de/10.1594/PANGAEA.968088?format=textfile download dataset The data set was checked for completeness, correctness, and consistency of metainformation. Validity of used methods was checked and - if applicable - precision and range of data. EVENT LABEL: AFIN_ATKA_20221206 * LATITUDE START: -70.605386 * LONGITUDE START: -8.136352 * LATITUDE END: -70.605753 * LONGITUDE END: -8.136683 * DATE/TIME START: 2022-12-06T11:16:00 * DATE/TIME END: 2022-12-06T19:33:00 * LOCATION: Antarctica * CAMPAIGN: ANT-Land_2022_AFIN * BASIS: NEUMAYER III * METHOD/DEVICE: Ground-based Electromagnetic Induction Sounding Device 2022-12-06T11:16:00 Related to <gco:CharacterString>Improved 1D inversions for sea ice thickness and conductivity from electromagnetic induction data: Inclusion of nonlinearities caused by passive bucking</gco:CharacterString> 2016-01-01 publication https://doi.org/10.1190/geo2015-0130.1 Hunkeler, Priska A
priska.hunkeler@awi.de
author Hendricks, Stefan
stefan.hendricks@awi.de
https://orcid.org/0000-0002-1412-3146 information author Hoppmann, Mario
mario.hoppmann@awi.de
https://orcid.org/0000-0003-1294-9531 information author Farquharson, Colin G author Kalscheuer, Thomas https://orcid.org/0000-0003-3819-8182 information author Grab, Melchior https://orcid.org/0000-0002-8293-4872 information author Kaufmann, Manuela S https://orcid.org/0000-0003-3060-7375 information author Rabenstein, Lasse author Gerdes, Rüdiger
ruediger.gerdes@awi.de
author documentDigital Geophysics 81(1) WA45-WA58 Related to <gco:CharacterString>A glimpse beneath Antarctic landfast sea ice: platelet-layer volume from multi-frequency electromagnetic induction sounding</gco:CharacterString> 2016-01-01 publication https://doi.org/10.1002/2015GL065074 Hunkeler, Priska A
priska.hunkeler@awi.de
author Hoppmann, Mario
mario.hoppmann@awi.de
https://orcid.org/0000-0003-1294-9531 information author Hendricks, Stefan
stefan.hendricks@awi.de
https://orcid.org/0000-0002-1412-3146 information author Kalscheuer, Thomas https://orcid.org/0000-0003-3819-8182 information author Gerdes, Rüdiger
ruediger.gerdes@awi.de
author documentDigital Geophysical Research Letters 43(1) 222-231 Related to <gco:CharacterString>EMagPy: Open-source standalone software for processing, forward modeling and inversion of electromagnetic induction data</gco:CharacterString> 2021-01-01 publication https://doi.org/10.1016/j.cageo.2020.104561 McLachlan, Paul author Blanchy, Guillaume author Binley, Andrew author documentDigital Computers & Geosciences 146 104561