Ringel Maximilian Harald mringel@uni-bremen.de 0000-0002-0600-135X Institute of Environmental Physics, University of Bremen IUP https://ror.org/04ers2y35 Spreen Gunnar gunnar.spreen@uni-bremen.de https://seaice.uni-bremen.de/gunnar-spreen/ 0000-0003-0165-8448 Institute of Environmental Physics, University of Bremen IUP https://ror.org/04ers2y35 Krumpen Thomas Thomas.Krumpen@awi.de https://www.awi.de/en/about-us/organisation/staff/single-view/thomas-krumpen.html 0000-0001-6234-8756 Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Bremerhaven AWI https://www.awi.de/ https://ror.org/032e6b942 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 2026 GEM-2 raw electromagnetic measurements of the ice floe transects during the PS149 CONTRASTS expedition at station PS149_32-1-gem2-730-iup-01 dataset https://doi.pangaea.de/10.1594/PANGAEA.996960 2026-09-02T09:11:46 https://doi.pangaea.de/10.1594/PANGAEA.996869 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. Nicolaus Marcel marcel.nicolaus@awi.de https://www.awi.de/en/about-us/organisation/staff/single-view/marcel-nicolaus.html 0000-0003-0903-1746 2026 The Expedition PS149 of the Research Vessel POLARSTERN to the Arctic Ocean in 2025 report Berichte zur Polar- und Meeresforschung = Reports on Polar and Marine Research 808 https://doi.org/10.57738/BZPM_0808_2026 382 pp General instrument specifications for GEM-2-730 in yaml format other https://download.pangaea.de/reference/141272/attachments/gem2-730-seaice-default.yaml PS149_32-1_floe1c_20250810_GEM730_LongTransect metadata in yaml format other https://download.pangaea.de/reference/141377/attachments/PS149_32-1_floe1c_20250810_GEM730_LongTransect.yaml Calibration data and metadata for PS149_32-1_floe1c_20250810_GEM730 other https://download.pangaea.de/reference/141388/attachments/PS149_32-1_floe1c_20250810_GEM730_Calibration.zip 33.918219 33.99214267 83.28525667 83.293805 33.952781896802286 83.29039491473256 2025-08-10T09:06:10 2025-08-10T10:30:41 0.4 17.5 AC3 Arctic Amplification https://gepris.dfg.de/project/268020496 Leipzig Institute for Meteorology, University of Leipzig LIM http://www.uni-leipzig.de/~meteo/en/index.php https://ror.org/03s7gtk40 Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Bremerhaven AWI https://www.awi.de/ https://doi.org/10.13039/501100003207 AWI_PS149_01 Sea Ice Physics (CONTRASTS) German Research Foundation DFG http://www.dfg.de/en/ https://doi.org/10.13039/501100001659 268020496 TRR 172: ArctiC Amplification: Climate Relevant Atmospheric and SurfaCe Processes, and Feedback Mechanisms https://gepris.dfg.de/project/268020496 PS149_32-1-gem2-730-iup-01 File 102 83.28525667 33.92586833 2025-08-10T09:06:00 83.29299967 33.94746333 2025-08-10T10:30:00 PS149 CONTRASTS; ArcWatch 3 Tromsø, Norway 2025-07-02T00:00:00 Longyearbyen, Svalbard and Jan Mayen 2025-09-01T00:00:00 Polarstern https://doi.org/10.17815/jlsrf-3-163 DBLK 8013132 Nicolaus, Marcel doi:10.57738/bzpm_0808_2026 20250027 https://epic.awi.de/id/eprint/60162/ https://download.pangaea.de/reference/135889/attachments/PS149_nav.png doi:10.1594/PANGAEA.987133 Polarstern https://doi.org/10.17815/jlsrf-3-163 DBLK 8013132 Broadband electromagnetic sensor BES https://registry.o2a-data.de/items/12738 Not logged in DShip. Long transect. 483807 CC-BY-4.0 Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/ DATE/TIME Date/Time http://en.wikipedia.org/wiki/ISO_8601 Time T http://dbpedia.org/resource/Time Ringel Maximilian Harald mringel@uni-bremen.de 0000-0002-0600-135X Date/Time LATITUDE Latitude http://en.wikipedia.org/wiki/ISO_6709 Ringel Maximilian Harald mringel@uni-bremen.de 0000-0002-0600-135X Latitude LONGITUDE Longitude http://en.wikipedia.org/wiki/ISO_6709 Ringel Maximilian Harald mringel@uni-bremen.de 0000-0002-0600-135X Longitude Line ID Line ID Ground-based Electromagnetic Induction Sounding Device, GEM-2, Geophex Ltd Ringel Maximilian Harald mringel@uni-bremen.de 0000-0002-0600-135X Line ID Record number RN Ground-based Electromagnetic Induction Sounding Device, GEM-2, Geophex Ltd Ringel Maximilian Harald mringel@uni-bremen.de 0000-0002-0600-135X RN Marker Marker Ground-based Electromagnetic Induction Sounding Device, GEM-2, Geophex Ltd Ringel Maximilian Harald mringel@uni-bremen.de 0000-0002-0600-135X Marker Status Status Ground-based Electromagnetic Induction Sounding Device, GEM-2, Geophex Ltd Ringel Maximilian Harald mringel@uni-bremen.de 0000-0002-0600-135X Error staus code for Geophex processing software: 0-OK, 1-overload, 2-tx error,4-memory Status (Error staus code for Geophex ...) Quality flag, position QF pos position http://purl.obolibrary.org/obo/PATO_0000140 Ground-based Electromagnetic Induction Sounding Device, GEM-2, Geophex Ltd Ringel Maximilian Harald mringel@uni-bremen.de 0000-0002-0600-135X GPS_status, 2 = WAAS differential corrected fix, 1 = floating fix, 0 = not position QF pos (GPS_status, 2 = WAAS differen...) ALTITUDE Altitude m http://en.wikipedia.org/wiki/Altitude Length L http://dbpedia.org/resource/Length Ground-based Electromagnetic Induction Sounding Device, GEM-2, Geophex Ltd Ringel Maximilian Harald mringel@uni-bremen.de 0000-0002-0600-135X GPS Altitude [m] (GPS) Magnetic field, power-line frequency Power line nT Ground-based Electromagnetic Induction Sounding Device, GEM-2, Geophex Ltd Ringel Maximilian Harald mringel@uni-bremen.de 0000-0002-0600-135X Power line [nT] In-phase component In-phase ppm Ground-based Electromagnetic Induction Sounding Device, GEM-2, Geophex Ltd Ringel Maximilian Harald mringel@uni-bremen.de 0000-0002-0600-135X at 1525Hz In-phase [ppm] (at 1525Hz) Quadrature component Quadrature ppm Ground-based Electromagnetic Induction Sounding Device, GEM-2, Geophex Ltd Ringel Maximilian Harald mringel@uni-bremen.de 0000-0002-0600-135X at 1525Hz Quadrature [ppm] (at 1525Hz) In-phase component In-phase ppm Ground-based Electromagnetic Induction Sounding Device, GEM-2, Geophex Ltd Ringel Maximilian Harald mringel@uni-bremen.de 0000-0002-0600-135X at 5325Hz In-phase [ppm] (at 5325Hz) Quadrature component Quadrature ppm Ground-based Electromagnetic Induction Sounding Device, GEM-2, Geophex Ltd Ringel Maximilian Harald mringel@uni-bremen.de 0000-0002-0600-135X at 5325Hz Quadrature [ppm] (at 5325Hz) In-phase component In-phase ppm Ground-based Electromagnetic Induction Sounding Device, GEM-2, Geophex Ltd Ringel Maximilian Harald mringel@uni-bremen.de 0000-0002-0600-135X at 18325Hz In-phase [ppm] (at 18325Hz) Quadrature component Quadrature ppm Ground-based Electromagnetic Induction Sounding Device, GEM-2, Geophex Ltd Ringel Maximilian Harald mringel@uni-bremen.de 0000-0002-0600-135X at 18325Hz Quadrature [ppm] (at 18325Hz) In-phase component In-phase ppm Ground-based Electromagnetic Induction Sounding Device, GEM-2, Geophex Ltd Ringel Maximilian Harald mringel@uni-bremen.de 0000-0002-0600-135X at 63025Hz In-phase [ppm] (at 63025Hz) Quadrature component Quadrature ppm Ground-based Electromagnetic Induction Sounding Device, GEM-2, Geophex Ltd Ringel Maximilian Harald mringel@uni-bremen.de 0000-0002-0600-135X at 63025Hz Quadrature [ppm] (at 63025Hz) In-phase component In-phase ppm Ground-based Electromagnetic Induction Sounding Device, GEM-2, Geophex Ltd Ringel Maximilian Harald mringel@uni-bremen.de 0000-0002-0600-135X at 93075Hz In-phase [ppm] (at 93075Hz) Quadrature component Quadrature ppm Ground-based Electromagnetic Induction Sounding Device, GEM-2, Geophex Ltd Ringel Maximilian Harald mringel@uni-bremen.de 0000-0002-0600-135X at 93075Hz Quadrature [ppm] (at 93075Hz) Quadrature component, sum Quadrature sum ppm Ground-based Electromagnetic Induction Sounding Device, GEM-2, Geophex Ltd Ringel Maximilian Harald mringel@uni-bremen.de 0000-0002-0600-135X Quadrature sum [ppm] Conductivity, apparent AppCond mS/m conductivity http://purl.obolibrary.org/obo/PATO_0001585 Ground-based Electromagnetic Induction Sounding Device, GEM-2, Geophex Ltd Ringel Maximilian Harald mringel@uni-bremen.de 0000-0002-0600-135X at 1525Hz AppCond [mS/m] (at 1525Hz) Conductivity, apparent AppCond mS/m conductivity http://purl.obolibrary.org/obo/PATO_0001585 Ground-based Electromagnetic Induction Sounding Device, GEM-2, Geophex Ltd Ringel Maximilian Harald mringel@uni-bremen.de 0000-0002-0600-135X at 5325Hz AppCond [mS/m] (at 5325Hz) Conductivity, apparent AppCond mS/m conductivity http://purl.obolibrary.org/obo/PATO_0001585 Ground-based Electromagnetic Induction Sounding Device, GEM-2, Geophex Ltd Ringel Maximilian Harald mringel@uni-bremen.de 0000-0002-0600-135X at 18325Hz AppCond [mS/m] (at 18325Hz) Conductivity, apparent AppCond mS/m conductivity http://purl.obolibrary.org/obo/PATO_0001585 Ground-based Electromagnetic Induction Sounding Device, GEM-2, Geophex Ltd Ringel Maximilian Harald mringel@uni-bremen.de 0000-0002-0600-135X at 63025Hz AppCond [mS/m] (at 63025Hz) Conductivity, apparent AppCond mS/m conductivity http://purl.obolibrary.org/obo/PATO_0001585 Ground-based Electromagnetic Induction Sounding Device, GEM-2, Geophex Ltd Ringel Maximilian Harald mringel@uni-bremen.de 0000-0002-0600-135X at 93075Hz AppCond [mS/m] (at 93075Hz) Conductivity, apparent AppCond mS/m conductivity http://purl.obolibrary.org/obo/PATO_0001585 Ground-based Electromagnetic Induction Sounding Device, GEM-2, Geophex Ltd Ringel Maximilian Harald mringel@uni-bremen.de 0000-0002-0600-135X Total apparent conductivity calculated by GEM2Exporter AppCond [mS/m] (Total apparent conductivity c...) Magnetic susceptibility, volume kappa 10**-6 SI https://en.wikipedia.org/wiki/Magnetic_susceptibility susceptibility Volume http://dbpedia.org/resource/Volume Ground-based Electromagnetic Induction Sounding Device, GEM-2, Geophex Ltd Ringel Maximilian Harald mringel@uni-bremen.de 0000-0002-0600-135X at 1525Hz kappa [10**-6 SI] (at 1525Hz) Magnetic susceptibility, volume kappa 10**-6 SI https://en.wikipedia.org/wiki/Magnetic_susceptibility susceptibility Volume http://dbpedia.org/resource/Volume Ground-based Electromagnetic Induction Sounding Device, GEM-2, Geophex Ltd Ringel Maximilian Harald mringel@uni-bremen.de 0000-0002-0600-135X at 5325Hz kappa [10**-6 SI] (at 5325Hz) Magnetic susceptibility, volume kappa 10**-6 SI https://en.wikipedia.org/wiki/Magnetic_susceptibility susceptibility Volume http://dbpedia.org/resource/Volume Ground-based Electromagnetic Induction Sounding Device, GEM-2, Geophex Ltd Ringel Maximilian Harald mringel@uni-bremen.de 0000-0002-0600-135X at 18325Hz kappa [10**-6 SI] (at 18325Hz) Magnetic susceptibility, volume kappa 10**-6 SI https://en.wikipedia.org/wiki/Magnetic_susceptibility susceptibility Volume http://dbpedia.org/resource/Volume Ground-based Electromagnetic Induction Sounding Device, GEM-2, Geophex Ltd Ringel Maximilian Harald mringel@uni-bremen.de 0000-0002-0600-135X at 63025Hz kappa [10**-6 SI] (at 63025Hz) Magnetic susceptibility, volume kappa 10**-6 SI https://en.wikipedia.org/wiki/Magnetic_susceptibility susceptibility Volume http://dbpedia.org/resource/Volume Ground-based Electromagnetic Induction Sounding Device, GEM-2, Geophex Ltd Ringel Maximilian Harald mringel@uni-bremen.de 0000-0002-0600-135X at 93075Hz kappa [10**-6 SI] (at 93075Hz) Magnetic susceptibility, volume kappa 10**-6 SI https://en.wikipedia.org/wiki/Magnetic_susceptibility susceptibility Volume http://dbpedia.org/resource/Volume Ground-based Electromagnetic Induction Sounding Device, GEM-2, Geophex Ltd Ringel Maximilian Harald mringel@uni-bremen.de 0000-0002-0600-135X at Total kappa [10**-6 SI] (at Total) CurationLevelC Enhanced curation https://wiki.pangaea.de/wiki/Curation_levels ProcLevel1 PANGAEA data processing level 1 https://wiki.pangaea.de/wiki/Processing_levels#PANGAEA_data_processing_level_1 Arctic CONTRASTS expedition electromagnetic induction GEM-2 Geophex ocean PS149 RV Polarstern Sea ice Sea ice thickness Transects author118204 author30475 author41127 author52094 author99249 award17 award4219 basis1 campaign3395020 campaign51147 curlevel30 event3328431 funder20472 funder32 geocode1599 geocode1600 geocode1601 geocode4607 inst20386 inst21208 inst32 journal16572 license21 method12260 method13701 param131687 param1588 param504772 param507640 param528987 param576417 param576418 param576419 param576420 param79845 param96165 pi118204 proclevel20 project4230 ref139667 ref141272 ref141377 ref141388 term1073162 term1073316 term2663714 term37889 term40892 term43863 term43975 term43984 term47389 term49379 term50444 term51970 term52691 term69561 term77427 term77467 term77535 term78516 term78517