de.pangaea.dataset996872 und de.pangaea.dataset996869 dataset PANGAEA

info@pangaea.de

https://www.pangaea.de/ information pointOfContact 2026-09-02T09:12:53Z https://doi.pangaea.de/10.1594/PANGAEA.996872 2026-09-02T09:11:47 publication Ringel, Maximilian Harald

mringel@uni-bremen.de

https://orcid.org/0000-0002-0600-135X information author Spreen, Gunnar

gunnar.spreen@uni-bremen.de

https://orcid.org/0000-0003-0165-8448 information author Krumpen, Thomas

Thomas.Krumpen@awi.de

https://orcid.org/0000-0001-6234-8756 information author Neudert, Mara

mneudert@awi.de

author PANGAEA

info@pangaea.de

https://www.pangaea.de/ information publisher tableDigital This dataset contains the raw electromagnetic induction (EM) measurements from a walk with the GEM instrument on a sledge across the ice floe (called long transect) conducted during the PS149 CONTRASTS expedition. The measurements were acquired using the Geophex Ltd. GEM-2-730 broadband EM sensor. During each ice station of the expedition (i.e., floe visit), a long transect was traversed across the ice floe to obtain statistically representative distributions of snow/pond depth and ice thickness. Each transect was marked with flags at its corner points to ensure that a similar track was measured during repeated visits to each ice floe. This dataset provides only the raw GEM measurements acquired along the transect for the indicated ice station (see title), including in-phase and quadrature responses, as well as electrical conductivity and magnetic susceptibility of sea ice and snow / melt ponds. These raw data enable users to apply various processing methods to, e.g., derive sea ice thickness. The measurements conducted during the other ice stations as well as further technical details about the data can be found in the collection: https://doi.pangaea.de/10.1594/PANGAEA.996869. completed Ringel, Maximilian Harald

mringel@uni-bremen.de

https://orcid.org/0000-0002-0600-135X information principalInvestigator Arctic CONTRASTS expedition electromagnetic induction GEM-2 Geophex ocean PS149 RV Polarstern Sea ice Sea ice thickness Transects theme 1995-01-01 creation PANGAEA

info@pangaea.de

https://www.pangaea.de/ information pointOfContact AC3 Arctic Amplification theme 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 21.9485 22.02100167 83.66948333 83.677115 2025-07-10T13:45:10 2025-07-10T15:25:04 0.1 11.0 DATE/TIME thematicClassification LATITUDE thematicClassification LONGITUDE thematicClassification Line ID thematicClassification Ground-based Electromagnetic Induction Sounding Device, GEM-2, Geophex Ltd Record number thematicClassification Ground-based Electromagnetic Induction Sounding Device, GEM-2, Geophex Ltd Marker thematicClassification Ground-based Electromagnetic Induction Sounding Device, GEM-2, Geophex Ltd Status thematicClassification Ground-based Electromagnetic Induction Sounding Device, GEM-2, Geophex Ltd; Error staus code for Geophex processing software: 0-OK, 1-overload, 2-tx error,4-memory Quality flag, position thematicClassification Ground-based Electromagnetic Induction Sounding Device, GEM-2, Geophex Ltd; GPS_status, 2 = WAAS differential corrected fix, 1 = floating fix, 0 = not position ALTITUDE physicalMeasurement Ground-based Electromagnetic Induction Sounding Device, GEM-2, Geophex Ltd; GPS m m Magnetic field, power-line frequency physicalMeasurement Ground-based Electromagnetic Induction Sounding Device, GEM-2, Geophex Ltd nT nT In-phase component physicalMeasurement Ground-based Electromagnetic Induction Sounding Device, GEM-2, Geophex Ltd; at 1525Hz ppm ppm Quadrature component physicalMeasurement Ground-based Electromagnetic Induction Sounding Device, GEM-2, Geophex Ltd; at 1525Hz ppm ppm In-phase component physicalMeasurement Ground-based Electromagnetic Induction Sounding Device, GEM-2, Geophex Ltd; at 5325Hz ppm ppm Quadrature component physicalMeasurement Ground-based Electromagnetic Induction Sounding Device, GEM-2, Geophex Ltd; at 5325Hz ppm ppm In-phase component physicalMeasurement Ground-based Electromagnetic Induction Sounding Device, GEM-2, Geophex Ltd; at 18325Hz ppm ppm Quadrature component physicalMeasurement Ground-based Electromagnetic Induction Sounding Device, GEM-2, Geophex Ltd; at 18325Hz ppm ppm In-phase component physicalMeasurement Ground-based Electromagnetic Induction Sounding Device, GEM-2, Geophex Ltd; at 63025Hz ppm ppm Quadrature component physicalMeasurement Ground-based Electromagnetic Induction Sounding Device, GEM-2, Geophex Ltd; at 63025Hz ppm ppm In-phase component physicalMeasurement Ground-based Electromagnetic Induction Sounding Device, GEM-2, Geophex Ltd; at 93075Hz ppm ppm Quadrature component physicalMeasurement Ground-based Electromagnetic Induction Sounding Device, GEM-2, Geophex Ltd; at 93075Hz ppm ppm Quadrature component, sum physicalMeasurement Ground-based Electromagnetic Induction Sounding Device, GEM-2, Geophex Ltd ppm ppm Conductivity, apparent physicalMeasurement Ground-based Electromagnetic Induction Sounding Device, GEM-2, Geophex Ltd; at 1525Hz mS/m mS/m Conductivity, apparent physicalMeasurement Ground-based Electromagnetic Induction Sounding Device, GEM-2, Geophex Ltd; at 5325Hz mS/m mS/m Conductivity, apparent physicalMeasurement Ground-based Electromagnetic Induction Sounding Device, GEM-2, Geophex Ltd; at 18325Hz mS/m mS/m Conductivity, apparent physicalMeasurement Ground-based Electromagnetic Induction Sounding Device, GEM-2, Geophex Ltd; at 63025Hz mS/m mS/m Conductivity, apparent physicalMeasurement Ground-based Electromagnetic Induction Sounding Device, GEM-2, Geophex Ltd; at 93075Hz mS/m mS/m Conductivity, apparent physicalMeasurement Ground-based Electromagnetic Induction Sounding Device, GEM-2, Geophex Ltd; Total apparent conductivity calculated by GEM2Exporter mS/m mS/m Magnetic susceptibility, volume physicalMeasurement Ground-based Electromagnetic Induction Sounding Device, GEM-2, Geophex Ltd; at 1525Hz 10**-6 SI 10**-6 SI Magnetic susceptibility, volume physicalMeasurement Ground-based Electromagnetic Induction Sounding Device, GEM-2, Geophex Ltd; at 5325Hz 10**-6 SI 10**-6 SI Magnetic susceptibility, volume physicalMeasurement Ground-based Electromagnetic Induction Sounding Device, GEM-2, Geophex Ltd; at 18325Hz 10**-6 SI 10**-6 SI Magnetic susceptibility, volume physicalMeasurement Ground-based Electromagnetic Induction Sounding Device, GEM-2, Geophex Ltd; at 63025Hz 10**-6 SI 10**-6 SI Magnetic susceptibility, volume physicalMeasurement Ground-based Electromagnetic Induction Sounding Device, GEM-2, Geophex Ltd; at 93075Hz 10**-6 SI 10**-6 SI Magnetic susceptibility, volume physicalMeasurement Ground-based Electromagnetic Induction Sounding Device, GEM-2, Geophex Ltd; at Total 10**-6 SI 10**-6 SI text/tab-separated-values unknown https://doi.pangaea.de/10.1594/PANGAEA.996872?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: PS149_13-1-gem2-730-iup-02 (File 046) * LATITUDE: 83.670921 * LONGITUDE: 21.948889 * DATE/TIME START: 2025-07-10T13:45:00 * DATE/TIME END: 2025-07-10T15:25:00 * O2A REGISTRY URI: https://registry.o2a-data.de/items/12738 * CAMPAIGN: PS149 * BASIS: Polarstern * METHOD/DEVICE: Broadband electromagnetic sensor Not logged in DShip. Survey along a triangle across the ice floe to measure ice & snow thickness distribution 2025-07-10T13:45:00 Related to 2026-01-01 publication https://doi.org/10.57738/BZPM_0808_2026 Nicolaus, Marcel

marcel.nicolaus@awi.de

https://orcid.org/0000-0003-0903-1746 information author documentDigital Berichte zur Polar- und Meeresforschung = Reports on Polar and Marine Research 808 382 pp Additional metadata documentHardcopy Additional metadata documentHardcopy