de.pangaea.dataset974371 und dataset PANGAEA

info@pangaea.de

https://www.pangaea.de/ information pointOfContact 2026-08-06T15:25:04Z https://doi.pangaea.de/10.1594/PANGAEA.974371 2025-01-09T13:54:06 publication https://doi.org/10.1594/PANGAEA.974371 Johann, Felix

johann@psg.tu-darmstadt.de

https://orcid.org/0000-0002-0486-1225 information author Eisermann, Hannes

Hannes.eisermann@ewetel.net

https://orcid.org/0000-0002-5604-6484 information author Eagles, Graeme

graeme.eagles@awi.de

https://orcid.org/0000-0001-5325-0810 information author PANGAEA

info@pangaea.de

https://www.pangaea.de/ information publisher tableDigital 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. completed Johann, Felix

johann@psg.tu-darmstadt.de

https://orcid.org/0000-0002-0486-1225 information principalInvestigator airborne gravity Antarctica inertial measurement unit Riiser-Larsen shelf ice strapdown gravimetry theme 1995-01-01 creation PANGAEA

info@pangaea.de

https://www.pangaea.de/ information pointOfContact copyright restricted copyright CC-BY-4.0: Creative Commons Attribution 4.0 International (License comes into effect after moratorium ends) textTable und geoscientificInformation -21.778181551999978 -8.318526022100002 -75.1458304863 -70.6304277123 2022-12-31T10:51:03 2023-01-12T15:20:20 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 thematicClassification DATE/TIME thematicClassification LATITUDE thematicClassification LONGITUDE thematicClassification Height above ellipsoid physicalMeasurement m m Gravity disturbance physicalMeasurement Gravity meter, iMAR, iNAV-RQH-1003 [with iTempStab-AddOn]; after using a 100 s low-pass filter, no crossover levelling mGal mGal Gravity disturbance physicalMeasurement Gravity meter, iMAR, iNAV-RQH-1003 [with iTempStab-AddOn]; after using a 100 s low-pass filter and flight-wise crossover levelling mGal mGal Gravity disturbance physicalMeasurement Gravity meter, iMAR, iNAV-RQH-1003 [with iTempStab-AddOn]; after using a 130 s low-pass filter, no crossover levelling mGal mGal Gravity disturbance physicalMeasurement Gravity meter, iMAR, iNAV-RQH-1003 [with iTempStab-AddOn]; after using a 130 s low-pass filter and flight-wise crossover levelling mGal mGal Normal gravity physicalMeasurement Gravity meter, iMAR, iNAV-RQH-1003 [with iTempStab-AddOn] mGal mGal text/tab-separated-values unknown https://doi.pangaea.de/10.1594/PANGAEA.974371?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: P5_236_RIISERBATHY_22_23_2212310401 * LATITUDE START: -70.659030 * LONGITUDE START: -8.287131 * LATITUDE END: -70.659018 * LONGITUDE END: -8.287703 * DATE/TIME START: 2022-12-31T10:31:17 * DATE/TIME END: 2022-12-31T15:59:15 * CAMPAIGN: P5-236_RIISERBATHY_22_23 * BASIS: POLAR 5 * METHOD/DEVICE: Aircraft 2022-12-31T10:31:17 EVENT LABEL: P5_236_RIISERBATHY_22_23_2301010501 * LATITUDE START: -70.659002 * LONGITUDE START: -8.287151 * LATITUDE END: -70.658994 * LONGITUDE END: -8.287518 * DATE/TIME START: 2023-01-01T09:24:22 * DATE/TIME END: 2023-01-01T15:17:20 * CAMPAIGN: P5-236_RIISERBATHY_22_23 * BASIS: POLAR 5 * METHOD/DEVICE: Aircraft 2023-01-01T09:24:22 EVENT LABEL: P5_236_RIISERBATHY_22_23_2301030601 * LATITUDE START: -70.659024 * LONGITUDE START: -8.287742 * LATITUDE END: -70.658867 * LONGITUDE END: -8.289661 * DATE/TIME START: 2023-01-03T10:31:45 * DATE/TIME END: 2023-01-03T16:43:43 * CAMPAIGN: P5-236_RIISERBATHY_22_23 * BASIS: POLAR 5 * METHOD/DEVICE: Aircraft 2023-01-03T10:31:45 EVENT LABEL: P5_236_RIISERBATHY_22_23_2301040701 * LATITUDE START: -70.659011 * LONGITUDE START: -8.287137 * LATITUDE END: -70.658998 * LONGITUDE END: -8.287621 * DATE/TIME START: 2023-01-04T10:41:14 * DATE/TIME END: 2023-01-04T16:32:13 * CAMPAIGN: P5-236_RIISERBATHY_22_23 * BASIS: POLAR 5 * METHOD/DEVICE: Aircraft 2023-01-04T10:41:14 EVENT LABEL: P5_236_RIISERBATHY_22_23_2301050801 * LATITUDE START: -70.659005 * LONGITUDE START: -8.287130 * LATITUDE END: -70.658989 * LONGITUDE END: -8.287510 * DATE/TIME START: 2023-01-05T10:09:34 * DATE/TIME END: 2023-01-05T16:03:33 * CAMPAIGN: P5-236_RIISERBATHY_22_23 * BASIS: POLAR 5 * METHOD/DEVICE: Aircraft 2023-01-05T10:09:34 EVENT LABEL: P5_236_RIISERBATHY_22_23_2301070901 * LATITUDE START: -70.658977 * LONGITUDE START: -8.287192 * LATITUDE END: -70.658975 * LONGITUDE END: -8.287550 * DATE/TIME START: 2023-01-07T13:53:04 * DATE/TIME END: 2023-01-07T19:36:03 * CAMPAIGN: P5-236_RIISERBATHY_22_23 * BASIS: POLAR 5 * METHOD/DEVICE: Aircraft 2023-01-07T13:53:04 EVENT LABEL: P5_236_RIISERBATHY_22_23_2301081001 * LATITUDE START: -70.658976 * LONGITUDE START: -8.287151 * LATITUDE END: -70.658822 * LONGITUDE END: -8.289716 * DATE/TIME START: 2023-01-08T09:48:25 * DATE/TIME END: 2023-01-08T15:43:24 * CAMPAIGN: P5-236_RIISERBATHY_22_23 * BASIS: POLAR 5 * METHOD/DEVICE: Aircraft 2023-01-08T09:48:25 EVENT LABEL: P5_236_RIISERBATHY_22_23_2301091101 * LATITUDE START: -70.659010 * LONGITUDE START: -8.287772 * LATITUDE END: -70.658867 * LONGITUDE END: -8.289617 * DATE/TIME START: 2023-01-09T09:48:31 * DATE/TIME END: 2023-01-09T15:34:30 * CAMPAIGN: P5-236_RIISERBATHY_22_23 * BASIS: POLAR 5 * METHOD/DEVICE: Aircraft 2023-01-09T09:48:31 EVENT LABEL: P5_236_RIISERBATHY_22_23_2301111201 * LATITUDE START: -70.658970 * LONGITUDE START: -8.287205 * LATITUDE END: -70.658963 * LONGITUDE END: -8.287837 * DATE/TIME START: 2023-01-11T13:19:23 * DATE/TIME END: 2023-01-11T19:01:22 * CAMPAIGN: P5-236_RIISERBATHY_22_23 * BASIS: POLAR 5 * METHOD/DEVICE: Aircraft 2023-01-11T13:19:23 EVENT LABEL: P5_236_RIISERBATHY_22_23_2301121301 * LATITUDE START: -70.658959 * LONGITUDE START: -8.287098 * LATITUDE END: -70.658370 * LONGITUDE END: -8.292019 * DATE/TIME START: 2023-01-12T10:05:37 * DATE/TIME END: 2023-01-12T15:45:36 * CAMPAIGN: P5-236_RIISERBATHY_22_23 * BASIS: POLAR 5 * METHOD/DEVICE: Aircraft 2023-01-12T10:05:37 Related to Eisermann, Hannes

Hannes.eisermann@ewetel.net

https://orcid.org/0000-0002-5604-6484 information author et al. author documentHardcopy Related to Johann, Felix

johann@psg.tu-darmstadt.de

https://orcid.org/0000-0002-0486-1225 information author et al. author documentHardcopy