IceBridge Sander AIRGrav L1B Geolocated Free Air Gravity Anomalies, Version 2
Data set id:
IGGRV1B
DOI: 10.5067/PEN1C60T9EAV
This is the most recent version of these data.
Version Summary
Version Summary
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.
Overview
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.
Parameter(s):
GRAVITY
Platform(s):
DC-8
P-3B
Sensor(s):
AIRGrav
Data Format(s):
ASCII
Temporal Coverage:
- 16 October 2009 to 17 November 2018
Temporal Resolution:
- Varies
Spatial Resolution:
- 5 km to 7 km
- 5 km to 7 km
Spatial Reference System(s):
- WGS 84 / Antarctic Polar StereographicEPSG:3031
- WGS 84 / NSIDC Sea Ice Polar Stereographic NorthEPSG:3413
Spatial Coverage:
- N:-53S:-90E:180W:-180
- N:90S:60E:180W:-180
Blue outlined yellow areas on the map below indicate the spatial coverage for this data set.
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