Johann Felix johann@psg.tu-darmstadt.de 0000-0002-0486-1225 Technical University of Darmstadt https://ror.org/05n911h24 Eisermann Hannes Hannes.eisermann@ewetel.net 0000-0002-5604-6484 Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Bremerhaven AWI https://www.awi.de/ https://ror.org/032e6b942 Eagles Graeme graeme.eagles@awi.de 0000-0001-5325-0810 Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Bremerhaven AWI https://www.awi.de/ https://ror.org/032e6b942 2025 Airborne strapdown gravity disturbance data (iNAV) across Riiser-Larsen Ice Shelf, East Antarctica, from 2022/23 (RIISERBATHY Project) dataset https://doi.org/10.1594/PANGAEA.974371 2025-01-09T13:54:06 In December 2022 and January 2023, the Alfred Wegener Institute for Polar and Marine Research (AWI) and the German Federal Institute for Geosciences and Natural Resources (BGR) conducted an airborne campaign, designated "RIISERBATHY", at the Riiser-Larsen ice shelf, East Antarctica. 'RIISERBATHY' is part of the overarching "GEA" project (Geodynamic Evolution of East Antarctica). The principal objectives of the project are to determine the bathymetry beneath the shelf ice, to augment knowledge on the ice-ocean interactions in the project area and to facilitate geological interpretations. Two gravimeters were installed in a Basler BT-67 aircraft "Polar 5": a stable-platform GT-2A, owned by the AWI, and a strapdown gravimeter of the iMAR iNAV-RQH-1003 type, equipped with iTempStab-AddOn (iNAV), provided by the Technical University of Darmstadt. This dataset includes the iNAV gravity disturbance results along the approximately straight flight lines, as well as the normal gravity. The gravity can be calculated by summing up the corresponding gravity disturbance and normal gravity. The positions (WGS84) are given for the iNAV's centre of measurements, comprising geodetic latitude, longitude and height above the ellipsoid. Gravity disturbance results are given for low-pass filter lengths of 100 s and 130 s. The formal spatial resolutions (half wavelength) for the 100 s and 130 s solutions are 3.8 km and 4.9 km, respectively. In addition to the unadjusted results, which were only anchored to the reference gravity at the airfield, flight-wise levelled results are provided, where a single bias per flight is estimated using crossover point levelling. In a crossover evaluation, root mean square errors (RMSE) of 1.83 mGal (1.26 mGal) were obtained using the 100 s filter, and RMSE of 1.71 mGal (1.07 mGal) were obtained using the 130 s filter before (after) crossover levelling. Hence, the use of the levelled 130 s filter results (iNAV) is recommended. Related GT-2A gravity results, GNSS master tracks, magnetic data, radio echo sounding data, as well as ice base and surface picks are deposited within PANGAEA as well. More information on the RIISERBATHY processing and results of both gravimeters can be found in the associated article. Eisermann Hannes Hannes.eisermann@ewetel.net 0000-0002-5604-6484 et al. in prep. Interactions of ice, ocean and bed at the Riiser-Larsen Ice Shelf Johann Felix johann@psg.tu-darmstadt.de 0000-0002-0486-1225 et al. submitted A comparison and combination of stable platform and strapdown airborne gravimeters -21.778181551999978 -8.318526022100002 -75.1458304863 -70.6304277123 -13.697934591602461 -72.44879767034271 2022-12-31T10:51:03 2023-01-12T15:20:20 Alfred Wegener Institute, Helmholtz Centre for Polar and Marine Research, Bremerhaven AWI https://www.awi.de/ https://doi.org/10.13039/501100003207 AWI_PA_02138 P5-236_RIISERBATHY_22_23 P5_236_RIISERBATHY_22_23_2212310401 -70.65903 -8.287131 2022-12-31T10:31:17 -70.659018 -8.287703 2022-12-31T15:59:15 P5-236_RIISERBATHY_22_23 P5-236_RIISERBATHY_22_23 RIISERBATHY RIISERBATHY 2022-08-05T00:00:00 2022-08-05 2023-01-12T00:00:00 2023-01-12 POLAR 5 https://doi.org/10.17815/jlsrf-2-153 Eisermann, Hannes Eisermann, Hannes POLAR 5 https://doi.org/10.17815/jlsrf-2-153 Aircraft AC P5_236_RIISERBATHY_22_23_2301010501 -70.659002 -8.287151 2023-01-01T09:24:22 -70.658994 -8.287518 2023-01-01T15:17:20 P5-236_RIISERBATHY_22_23 P5-236_RIISERBATHY_22_23 RIISERBATHY RIISERBATHY 2022-08-05T00:00:00 2022-08-05 2023-01-12T00:00:00 2023-01-12 POLAR 5 https://doi.org/10.17815/jlsrf-2-153 Eisermann, Hannes Eisermann, Hannes POLAR 5 https://doi.org/10.17815/jlsrf-2-153 Aircraft AC P5_236_RIISERBATHY_22_23_2301030601 -70.659024 -8.287742 2023-01-03T10:31:45 -70.658867 -8.289661 2023-01-03T16:43:43 P5-236_RIISERBATHY_22_23 P5-236_RIISERBATHY_22_23 RIISERBATHY RIISERBATHY 2022-08-05T00:00:00 2022-08-05 2023-01-12T00:00:00 2023-01-12 POLAR 5 https://doi.org/10.17815/jlsrf-2-153 Eisermann, Hannes Eisermann, Hannes POLAR 5 https://doi.org/10.17815/jlsrf-2-153 Aircraft AC P5_236_RIISERBATHY_22_23_2301040701 -70.659011 -8.287137 2023-01-04T10:41:14 -70.658998 -8.287621 2023-01-04T16:32:13 P5-236_RIISERBATHY_22_23 P5-236_RIISERBATHY_22_23 RIISERBATHY RIISERBATHY 2022-08-05T00:00:00 2022-08-05 2023-01-12T00:00:00 2023-01-12 POLAR 5 https://doi.org/10.17815/jlsrf-2-153 Eisermann, Hannes Eisermann, Hannes POLAR 5 https://doi.org/10.17815/jlsrf-2-153 Aircraft AC P5_236_RIISERBATHY_22_23_2301050801 -70.659005 -8.28713 2023-01-05T10:09:34 -70.658989 -8.28751 2023-01-05T16:03:33 P5-236_RIISERBATHY_22_23 P5-236_RIISERBATHY_22_23 RIISERBATHY RIISERBATHY 2022-08-05T00:00:00 2022-08-05 2023-01-12T00:00:00 2023-01-12 POLAR 5 https://doi.org/10.17815/jlsrf-2-153 Eisermann, Hannes Eisermann, Hannes POLAR 5 https://doi.org/10.17815/jlsrf-2-153 Aircraft AC P5_236_RIISERBATHY_22_23_2301070901 -70.658977 -8.287192 2023-01-07T13:53:04 -70.658975 -8.28755 2023-01-07T19:36:03 P5-236_RIISERBATHY_22_23 P5-236_RIISERBATHY_22_23 RIISERBATHY RIISERBATHY 2022-08-05T00:00:00 2022-08-05 2023-01-12T00:00:00 2023-01-12 POLAR 5 https://doi.org/10.17815/jlsrf-2-153 Eisermann, Hannes Eisermann, Hannes POLAR 5 https://doi.org/10.17815/jlsrf-2-153 Aircraft AC P5_236_RIISERBATHY_22_23_2301081001 -70.658976 -8.287151 2023-01-08T09:48:25 -70.658822 -8.289716 2023-01-08T15:43:24 P5-236_RIISERBATHY_22_23 P5-236_RIISERBATHY_22_23 RIISERBATHY RIISERBATHY 2022-08-05T00:00:00 2022-08-05 2023-01-12T00:00:00 2023-01-12 POLAR 5 https://doi.org/10.17815/jlsrf-2-153 Eisermann, Hannes Eisermann, Hannes POLAR 5 https://doi.org/10.17815/jlsrf-2-153 Aircraft AC P5_236_RIISERBATHY_22_23_2301091101 -70.65901 -8.287772 2023-01-09T09:48:31 -70.658867 -8.289617 2023-01-09T15:34:30 P5-236_RIISERBATHY_22_23 P5-236_RIISERBATHY_22_23 RIISERBATHY RIISERBATHY 2022-08-05T00:00:00 2022-08-05 2023-01-12T00:00:00 2023-01-12 POLAR 5 https://doi.org/10.17815/jlsrf-2-153 Eisermann, Hannes Eisermann, Hannes POLAR 5 https://doi.org/10.17815/jlsrf-2-153 Aircraft AC P5_236_RIISERBATHY_22_23_2301111201 -70.65897 -8.287205 2023-01-11T13:19:23 -70.658963 -8.287837 2023-01-11T19:01:22 P5-236_RIISERBATHY_22_23 P5-236_RIISERBATHY_22_23 RIISERBATHY RIISERBATHY 2022-08-05T00:00:00 2022-08-05 2023-01-12T00:00:00 2023-01-12 POLAR 5 https://doi.org/10.17815/jlsrf-2-153 Eisermann, Hannes Eisermann, Hannes POLAR 5 https://doi.org/10.17815/jlsrf-2-153 Aircraft AC P5_236_RIISERBATHY_22_23_2301121301 -70.658959 -8.287098 2023-01-12T10:05:37 -70.65837 -8.292019 2023-01-12T15:45:36 P5-236_RIISERBATHY_22_23 P5-236_RIISERBATHY_22_23 RIISERBATHY RIISERBATHY 2022-08-05T00:00:00 2022-08-05 2023-01-12T00:00:00 2023-01-12 POLAR 5 https://doi.org/10.17815/jlsrf-2-153 Eisermann, Hannes Eisermann, Hannes POLAR 5 https://doi.org/10.17815/jlsrf-2-153 Aircraft AC 911730 CC-BY-4.0 Creative Commons Attribution 4.0 International https://creativecommons.org/licenses/by/4.0/ Campaign: P5-236_RIISERBATHY_22_23 Mission PI: H. Eisermann Correspondence: johann@psg.tu-darmstadt.de Instrument used: gravity meter iMAR iNAV-RQH-1003 with iTempStab-AddOn Event label Event Johann Felix johann@psg.tu-darmstadt.de 0000-0002-0486-1225 Event DATE/TIME Date/Time http://en.wikipedia.org/wiki/ISO_8601 Time T http://dbpedia.org/resource/Time Johann Felix johann@psg.tu-darmstadt.de 0000-0002-0486-1225 Date/Time LATITUDE Latitude http://en.wikipedia.org/wiki/ISO_6709 Johann Felix johann@psg.tu-darmstadt.de 0000-0002-0486-1225 Latitude LONGITUDE Longitude http://en.wikipedia.org/wiki/ISO_6709 Johann Felix johann@psg.tu-darmstadt.de 0000-0002-0486-1225 Longitude Height above ellipsoid H-Ell m height http://purl.obolibrary.org/obo/PATO_0000119 ellipsoid Length L http://dbpedia.org/resource/Length Johann Felix johann@psg.tu-darmstadt.de 0000-0002-0486-1225 H-Ell [m] Gravity disturbance Gravity dist mGal Linear Acceleration http://dbpedia.org/resource/Acceleration Gravity meter, iMAR, iNAV-RQH-1003 [with iTempStab-AddOn] Johann Felix johann@psg.tu-darmstadt.de 0000-0002-0486-1225 after using a 100 s low-pass filter, no crossover levelling Gravity dist [mGal] (after using a 100 s low-pass ...) Gravity disturbance Gravity dist mGal Linear Acceleration http://dbpedia.org/resource/Acceleration Gravity meter, iMAR, iNAV-RQH-1003 [with iTempStab-AddOn] Johann Felix johann@psg.tu-darmstadt.de 0000-0002-0486-1225 after using a 100 s low-pass filter and flight-wise crossover levelling Gravity dist [mGal] (after using a 100 s low-pass ...) Gravity disturbance Gravity dist mGal Linear Acceleration http://dbpedia.org/resource/Acceleration Gravity meter, iMAR, iNAV-RQH-1003 [with iTempStab-AddOn] Johann Felix johann@psg.tu-darmstadt.de 0000-0002-0486-1225 after using a 130 s low-pass filter, no crossover levelling Gravity dist [mGal] (after using a 130 s low-pass ...) Gravity disturbance Gravity dist mGal Linear Acceleration http://dbpedia.org/resource/Acceleration Gravity meter, iMAR, iNAV-RQH-1003 [with iTempStab-AddOn] Johann Felix johann@psg.tu-darmstadt.de 0000-0002-0486-1225 after using a 130 s low-pass filter and flight-wise crossover levelling Gravity dist [mGal] (after using a 130 s low-pass ...) Normal gravity Norm gravity mGal Linear Acceleration http://dbpedia.org/resource/Acceleration Gravity meter, iMAR, iNAV-RQH-1003 [with iTempStab-AddOn] Johann Felix johann@psg.tu-darmstadt.de 0000-0002-0486-1225 Norm gravity [mGal] CurationLevelC Enhanced curation https://wiki.pangaea.de/wiki/Curation_levels citable airborne gravity Antarctica inertial measurement unit Riiser-Larsen shelf ice strapdown gravimetry author109109 author27272 author40917 author59362 award3241 basis4670 campaign3373848 campaign49461 curlevel30 event3062152 event3062153 event3062154 event3062155 event3062156 event3062157 event3062158 event3062159 event3062160 event3062161 funder32 geocode1599 geocode1600 geocode1601 inst21898 inst32 license21 method10713 method17463 param140735 param536332 param536333 pi109109 ref131247 ref131248 term1073288 term2664018 term43863 term43872 term43975 term47208 term51697 term52887 term75445 term75446 term75447