EAGLE/ICECAP II GEOPHYSICAL OBSERVATIONS (SURFACE AND BED ELEVATION, ICE THICKNESS, GRAVITY DISTURBANCE AND MAGNETIC ANOMALIES)

These aerogeophysical data were collected as part of the ICECAP (International Collaborative Exploration of the Cryosphere through Airborne Profiling) collaboration in 2015/16 (ICP7) and 2016/17 (ICP8). These data were in part funded by the US National Science Foundation (grant PLR-1543452 to UTIG), Antarctic Gateway, ACE-CRC the G. Unger Vetlesen Foundation, and supported by the Australian Antarctic Division through project AAS-4346.

This data collection represents geolocated, time registered geophysical observations (L2 data). These data are derived from L0 and L1B data published as separate datasets. The data format are space delimited ASCII files, following the formats used for UTIG/AAD/NASA's predecessor ICECAP/OIB project at NASA's NSIDC DAAC. Fields are described in the # delimited detailed header for each granule.

MAGNETICS
Magnetics provides constraints on the depth to crystalline rock, and hence indicates the density of bathymetry
EMGEO2 geolocated magnetic anomaly profiles, 10 Hz ASCII

GRAVITY
Gravity data is used to infer bathymetry, by looking at the density contrast between water and bathymetry
EGCMG2 geolocated free air gravity disturbance profiles; 10 Hz ASCII

ALTIMETRY
Repeat track laser altimetry provides a history of thinning of outlet glaciers
ELUTP2 geolocated ice surface elevation profiles; 3.5 Hz ASCII

RADAR
Ice penetrating radar provides the geometry of the ice shelves and outlet glaciers, and provides constraints on properties at the base of the ice (e.g. subglacial waters, sub ice shelf melting)
ER2HI2 geolocated ice thickness, bed and surface elevation and echo amplitude, and surface range; 4 Hz ASCII; incoherent, unmigrated processing (pik1).