Data

Denman Terrestrial Campaign - Ground-based gravity transect

University of Tasmania, Australia
Lösing, Mareen ; Aitken, Alan
Viewed: [[ro.stat.viewed]] Cited: [[ro.stat.cited]] Accessed: [[ro.stat.accessed]]
ctx_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rfr_id=info%3Asid%2FANDS&rft_id=info:doi10.25959/rm9s-kt42&rft.title=Denman Terrestrial Campaign - Ground-based gravity transect&rft.identifier=10.25959/rm9s-kt42&rft.description=New ground-based gravity and GNSS data set collected at nine sites along a ~14 km transect across the Denman Glacier system during the Denman Terrestrial Campaign 2023/24. The survey was conducted along the existing ICECAP airborne geophysical flight line ASB/JKB2c/Y11b, enabling direct comparison between ground-based and airborne observations. Coincident GNSS observations are provided for precise station positions and ellipsoidal heights.Maintenance and Update Frequency: notPlannedStatement: In January 2024, we collected nine ground-based gravity measurements along a ~14 km transect across the Denman Glacier (spacing ~ 1.7 km). We used a Scintrex CG-5 Autograv (resolution 0.001 mGal; typical station repeatability of 5 μGal under stable conditions; long-term drift below 0.02 mGal/day (See Scintrex CG5 Manual, 2017)), with daily base ties at Bunger Hills and loop closures including the Casey Station absolute site to control drift. Field readings from the CG-5 were tied to an absolute reference by calibrating against the Casey Station fundamental value of 982380.48867 mGal (Lon: 110.5226, Lat: -66.2820, height: 19 m, positional error: 3 m, gravity error: 30 μGal). Coordinates were determined from dual-frequency Trimble GNSS. Rover trajectories were post-processed kinematically (PPK) in Emlid Studio v1.5; the local PPK network was tied to an AUSPOS (ITRF2014) solution. On the Glacier, we positioned one GNSS Antenna at a mid-line base (Lon: 99.4622, Lat: -67.1976, height = 804.817 m ellipsoidal) for ~7 hours. 'Casey Base Station': All measurements at the Casey station as summary in the Casey_Station.xlsx sheet, raw data in the .TXT files, and 6Hz data in the .SMP files. 'Bunger Hills Control': All measurements at the Bunger Hills camp as summary in the Bunger_control.xlsx sheet. Several folders with dates contain backups of raw data in the .TXT files, 6Hz data in the .SMP files, and GNSS files (only on two days) with coordinates of the three drifferent control points in the Bunger Hills camp. 'Transect': All measurements at the transect (on January 3rd only at 3 of 9 sites, on January 7th at all 9 sites). Summary of gravity in Transect.xlsx, summary of coordinates in Coordinates_Height_Site.xlsx, Trimble data in 'GNSS' folder, gravimeter outputs in 'raw gravimeter files' folder. Summary gravity files contain Station Number (Station no), Location (Site/name of location), gravimeter tide correction (TC), standard deviation (SD), horizontal tilts (TiltX, TiltY), height given by gravimeter (usually not correct), Comments, and Date.&rft.creator=Lösing, Mareen &rft.creator=Aitken, Alan &rft.date=2026&rft.coverage=westlimit=99.31074836; southlimit=-67.21910662; eastlimit=110.522; northlimit=-66.25042774&rft.coverage=westlimit=99.31074836; southlimit=-67.21910662; eastlimit=110.522; northlimit=-66.25042774&rft_rights=Creative Commons Attribution 4.0 International License https://creativecommons.org/licenses/by/4.0/&rft_rights=Cite data as: Lösing, M., & Aitken, A. (2026). Denman Terrestrial Campaign - Ground-based gravity transect [Data set]. Institute for Marine and Antarctic Studies. https://doi.org/10.25959/RM9S-KT42&rft_subject=geoscientificInformation&rft_subject=Denman Glacier&rft_subject=Denman Terrestrial Campaign&rft_subject=ACEAS&rft_subject=GNSS&rft_subject=Transect&rft_subject=GRAVITY/GRAVITATIONAL FIELD&rft_subject=EARTH SCIENCE&rft_subject=SOLID EARTH&rft_subject=PHYSICAL GEOGRAPHY AND ENVIRONMENTAL GEOSCIENCE&rft_subject=EARTH SCIENCES&rft_subject=GEOPHYSICS&rft_subject=Marine Geoscience&rft_subject=GEOLOGY&rft.type=dataset&rft.language=English Access the data
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Cite data as: Lösing, M., & Aitken, A. (2026). Denman Terrestrial Campaign - Ground-based gravity transect [Data set]. Institute for Marine and Antarctic Studies. https://doi.org/10.25959/RM9S-KT42

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New ground-based gravity and GNSS data set collected at nine sites along a ~14 km transect across the Denman Glacier system during the Denman Terrestrial Campaign 2023/24. The survey was conducted along the existing ICECAP airborne geophysical flight line ASB/JKB2c/Y11b, enabling direct comparison between ground-based and airborne observations. Coincident GNSS observations are provided for precise station positions and ellipsoidal heights.

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Maintenance and Update Frequency: notPlanned
Statement: In January 2024, we collected nine ground-based gravity measurements along a ~14 km transect across the Denman Glacier (spacing ~ 1.7 km). We used a Scintrex CG-5 Autograv (resolution 0.001 mGal; typical station repeatability of 5 μGal under stable conditions; long-term drift below 0.02 mGal/day (See Scintrex CG5 Manual, 2017)), with daily base ties at Bunger Hills and loop closures including the Casey Station absolute site to control drift. Field readings from the CG-5 were tied to an absolute reference by calibrating against the Casey Station fundamental value of 982380.48867 mGal (Lon: 110.5226, Lat: -66.2820, height: 19 m, positional error: 3 m, gravity error: 30 μGal). Coordinates were determined from dual-frequency Trimble GNSS. Rover trajectories were post-processed kinematically (PPK) in Emlid Studio v1.5; the local PPK network was tied to an AUSPOS (ITRF2014) solution. On the Glacier, we positioned one GNSS Antenna at a mid-line base (Lon: 99.4622, Lat: -67.1976, height = 804.817 m ellipsoidal) for ~7 hours. 'Casey Base Station': All measurements at the Casey station as summary in the Casey_Station.xlsx sheet, raw data in the .TXT files, and 6Hz data in the .SMP files. 'Bunger Hills Control': All measurements at the Bunger Hills camp as summary in the Bunger_control.xlsx sheet. Several folders with dates contain backups of raw data in the .TXT files, 6Hz data in the .SMP files, and GNSS files (only on two days) with coordinates of the three drifferent control points in the Bunger Hills camp. 'Transect': All measurements at the transect (on January 3rd only at 3 of 9 sites, on January 7th at all 9 sites). Summary of gravity in Transect.xlsx, summary of coordinates in Coordinates_Height_Site.xlsx, Trimble data in 'GNSS' folder, gravimeter outputs in 'raw gravimeter files' folder. Summary gravity files contain Station Number (Station no), Location (Site/name of location), gravimeter tide correction (TC), standard deviation (SD), horizontal tilts (TiltX, TiltY), height given by gravimeter (usually not correct), Comments, and Date.

Notes

Credit
This research was supported by the Australian Research Council Special Research Initiative, Australian Centre for Excellence in Antarctic Science (Project Number SR200100008). This work was also supported by fieldwork that occurred under AAS4630.

Issued: 04 02 2026

Data time period: 2023-12-08 to 2024-02-08

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110.522,-66.25043 110.522,-67.21911 99.31075,-67.21911 99.31075,-66.25043 110.522,-66.25043

104.91637418,-66.73476718

text: westlimit=99.31074836; southlimit=-67.21910662; eastlimit=110.522; northlimit=-66.25042774

Subjects
ACEAS | Denman Glacier | Denman Terrestrial Campaign | EARTH SCIENCE | Earth Sciences | Geology | Geophysics | GNSS | GRAVITY/GRAVITATIONAL FIELD | Marine Geoscience | Physical Geography and Environmental Geoscience | SOLID EARTH | Transect | geoscientificInformation |

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Other Information
All measurements at the Bunger Hills camp as summary in the Bunger_control.xlsx sheet. Several folders with dates contain backups of raw data in the .TXT files, 6Hz data in the .SMP files, and GNSS files (only on two days) with coordinates of the three different control points in the Bunger Hills camp. (DATA ACCESS - Bunger Hills control measurements (45MB, ZIP))

url : https://data.imas.utas.edu.au/attachments/5ba37235-2e9c-4850-91d8-1837b2d95778/Bunger_Hills_Control_Xp4j0nR.zip

All measurements at the Casey station as summary in the Casey_Station.xlsx sheet, raw data in the .TXT files, and 6Hz data in the .SMP files (DATA ACCESS - Casey Station measurements (4.2MB, ZIP))

url : https://data.imas.utas.edu.au/attachments/5ba37235-2e9c-4850-91d8-1837b2d95778/Casey_Base_Station_0cuVOWU.zip

All measurements at the transect (on January 3rd only at 3 of 9 sites, on January 7th at all 9 sites). Summary of gravity in Transect.xlsx, summary of coordinates in Coordinates_Height_Site.xlsx, Trimble data in 'GNSS' folder, gravimeter outputs in 'raw gravimeter files' folder. (DATA ACCESS - Transect measurements (36MB, ZIP))

url : https://data.imas.utas.edu.au/attachments/5ba37235-2e9c-4850-91d8-1837b2d95778/Transect.zip

local : 00arpt780

local : 047272k79

local : 0000-0002-9222-2107

local : 047272k79

local : 0000-0002-6375-2504

local : 047272k79

local : 0000-0002-9222-2107

Identifiers
ACN 633 798 857