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Description

This data set contains gravity measurements, including acceleration data in three orthogonal directions, from the Sander Geophysics AIRGrav airborne gravity system. Gravity data include latitude and Eotvos-corrected values, as well as free air correction at various along-flight-line time filtering scales. The data were collected as part of Operation IceBridge funded campaigns.

Version Description

A re-analysis of the entire data set was performed using continuous flights of data instead of subdividing flights into sections that were defined as “normal”, “disturbed”, and “no data” based on aircraft motion to avoid discontinuities and coverage gaps. The flight environment flag (FLTENVIRO) has been replaced with horizontal and vertical acceleration data (ACC_HOR, ACC_VER). Leveling corrections were interpolated through flight turns to maintain continuous data while avoiding the influence of turn effects. The re-analysis also includes general improvements to noise levels throughout the entire data set.

Product Summary

Platforms
DC-8 ,
P-3B
Instruments
AIRGrav
Projects
2009_AN_NASA ,
2010_AN_NASA ,
2010_GR_NASA ,
2011_AN_NASA ,
2011_GR_NASA ,
2012_AN_NASA ,
2012_GR_NASA ,
2013_AN_NASA ,
2013_GR_NASA ,
2014_AN_NASA ,
2014_GR_NASA ,
2015_AN_NASA ,
2015_GR_NASA ,
2016_AN_NASA ,
2017_AN_NASA ,
2018_AN_NASA
Spatial Extent

N: -53 S: -90 E: 180 W: -180

,

N: 90 S: 60 E: 180 W: -180

Spatial Resolution
5 Kilometers to 7 Kilometers x 5 Kilometers to 7 Kilometers
Spatial Reference System(s)
Multiple EPSG codes (see User Guide)
Location
ANTARCTICA ,
GREENLAND
Coordinate System
CARTESIAN
Granule Spatial Representation
GEODETIC
Temporal Extent
2009-10-16 to 2018-11-17
Temporal Resolution
Varies
Concept ID
C3401826004-NSIDC_CPRD
Data State
COMPLETE
Number of Files/Granules
269
Processing Level
1B
Published
Science Keywords
Gravity

Citation

Citation is critically important for dataset documentation and discovery. This dataset is openly shared, without restriction, in accordance with the EOSDIS Data Use and Citation Guidance.

Copy Citation

Tinto, K., Bell, R. E., & Cochran, J. R. (2025). IceBridge Sander AIRGrav L1B Geolocated Free Air Gravity Anomalies, Version 2 [Dataset]. NASA National Snow and Ice Data Center Distributed Active Archive Center. https://doi.org/10.5067/PEN1C60T9EAV Date Accessed: 2026-06-08

Documents

Publications Citing This Dataset

Filters
Title Year Author Topic
Subglacial geology and palaeo flow of Pine Island Glacier from combining glacial erratics with geophysics Jordan, Tom A., Johnson, Joanne S., Riley, Teal R., Conrad, Ethan, Carter, Andrew Ice Velocity, Gravity
Improving the Spatial Resolution of GRACE-derived Ice Sheet Mass Change in Antarctica Shi, Zhuoya, Wang, Zemin, Zhang, Baojun, Zhang, Gangqiang, Barrand, Nicholas E., Geng, Hong, An, Jiachun, Su, Yong Glacier Elevation/Ice Sheet Elevation, Gravity
Geologic Provinces Beneath the Greenland Ice Sheet Constrained by MacGregor, Joseph A., Colgan, William T., Paxman, Guy J. G., Tinto, Kirsty J., Csatho, Beata, Darbyshire, Fiona A., Fahnestock, Mark A., Kokfelt, Thomas F., MacKie, Emma J., Morlighem, Mathieu, Sergienko, Olga V. Ice Velocity, Magnetic Field, Gravity, Glacier Elevation/Ice Sheet Elevation, Bathymetry, Bed Elevation, Glacier/Ice Sheet Thickness, Terrain Elevation, Snow Grain Size, Surface Morphology
Geological sketch map and implications for ice flow of Thwaites Glacier Jordan, Tom A., Thompson, Sarah, Kulessa, Bernd, Ferraccioli, Fausto Ice Velocity, Glacier Elevation/Ice Sheet Elevation, Glacier Thickness/Ice Sheet Thickness, Gravity
NeogeneQuaternary Uplift and Landscape Evolution in Northern Greenland Recorded by Subglacial Valley Morphology Paxman, Guy J. G., Tinto, Kirsty J., Austermann, Jacqueline Glacier Elevation/Ice Sheet Elevation, Glacier Thickness/Ice Sheet Thickness, Snow Grain Size, Surface Morphology, Gravity, Bathymetry, Bed Elevation, Glacier/Ice Sheet Thickness, Terrain Elevation
Detailed Bathymetry of the Continental Shelf Beneath the Getz Ice Shelf Cochran, James R., Tinto, Kirsty J., Bell, Robin E. Glacier Elevation/Ice Sheet Elevation, Glacier Thickness/Ice Sheet Thickness, Gravity
Getz Ice Shelf melt enhanced by freshwater discharge from beneath the West Antarctic Ice Sheet Wei, Wei, Blankenship, Donald D., Greenbaum, Jamin S., Gourmelen, Noel, Dow, Christine F., Richter, Thomas G., Greene, Chad A., Young, Duncan A., Lee, SangHoon, Kim, Tae-Wan, Lee, Won Sang, Assmann, Karen M. Basins, Coastline, Grounding Line, Ice Shelves, Gravity
Revealing the former bed of Thwaites Glacier using sea-floor bathymetry: Implications for warm-water routing and bed controls on ice flow and buttressing Hogan, Kelly A., Larter, Robert D., Graham, Alastair G. C., Arthern, Robert, Kirkham, James D., Totten, Rebecca L., Jordan, Tom A., Clark, Rachel, Fitzgerald, Victoria, Wahlin, Anna K., Anderson, John B., Hillenbrand, Claus-Dieter, Nitsche, Frank O., Simkins, Lauren, Smith, James A., Gohl, Karsten, Arndt, Jan Erik, Hong, Jongkuk, Wellner, Julia Gravity
A Possible Second Large Subglacial Impact Crater in Northwest Greenland MacGregor, Joseph A., Bottke, William F., Fahnestock, Mark A., Harbeck, Jeremy P., Kjr, Kurt H., Paden, John D., Stillman, David E., Studinger, Michael Glacier Elevation/Ice Sheet Elevation, Ice Roughness, Magnetic Field, Gravity, RADAR IMAGERY, Sea Ice Elevation, Sea Ice Elevation, Snow Grain Size, Surface Morphology
A Century of Stability of Avannarleq and Kujalleq Glaciers, West Greenland, Explained Using High-Resolution Airborne Gravity and Other Data An, L., Rignot, E., Mouginot, J., Millan, R. Gravity
Exploring the Recovery Lakes region and interior Dronning Maud Land, East Antarctica, with airborne gravity, magnetic and radar measurements Forsberg, Rene, Olesen, Arne V., Ferraccioli, Fausto, Jordan, Tom A., Matsuoka, Kenichi, Zakrajsek, Andres, Ghidella, Marta, Greenbaum, Jamin S. Bed Elevation, Ice Depth/Thickness, Ice Depth/Thickness, Terrain Elevation, Gravity
Four-decade record of pervasive grounding line retreat along the Christie, Frazer D. W., Bingham, Robert G., Gourmelen, Noel, Tett, Simon F. B., Muto, Atsuhiro Glacier Elevation/Ice Sheet Elevation, Glacier Thickness/Ice Sheet Thickness, Gravity
Resolving bathymetry from airborne gravity along Greenland fjords Boghosian, Alexandra, Tinto, Kirsty, Cochran, James R., Porter, David, Elieff, Stefan, Burton, Bethany L., Bell, Robin E. Glacier Elevation/Ice Sheet Elevation, Glacier Thickness/Ice Sheet Thickness, Gravity
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