Bathymetry model of the Venable Ice Shelf and the eastern portion of the Abbot Ice Shelf from the inversion of Operation IceBridge gravity anomalies measured from Sanders Geophysics Limited Airborne Inertially Referenced Gravimeter (AIRGrav). File Naming Convention: ----------------------- IGBTH4_20241127.XYZ Data were named according the following file naming convention: _.xyz Table 1. File Naming Convention ------------------------------- Variable: Description: IGBTH4 File name prefix indicating Level-4 bathymetry data YYYYMMDD Four-digit year, two-digit month, and two-digit day of data delivery date .xyz Indicates ASCII text x, y, z data file File Parameters, Units, and Descripton: --------------------------------------- Name (Units): Description LINE (n/a): Line numbers of individual profiles FAG070_mGal (mGal): Free Air Gravity Anomaly, measured FAG_calc_mGal (mGal): Free Air Gravity Anomaly, calculated LON (Degrees): Longitude on WGS-84 ellipsoid LAT (Degrees): Latitude on WGS-84 ellipsoid X (Meters): X Coordinate (EPSG 3031) Y (Meters): Y Coordinate (EPSG 3031) BATHY_m (Meters): Modeled bathyetry from gravity inversion, positive up, with respect to the WGS-84 ellipsoid File Size: ---------- 102 KB Projection Information: ----------------------- Polar stereographic projected coordinates true to scale at 71 S, 0 up, 180 down, WGS-84 ellipsoid (EPSG 3031) Data Repository: ---------------- National Snow and Ice Data Center (NSIDC) https://nsidc.org/data/igbth4/versions/1 Date Last Updated: ----------------- 02 December 2024