Publication Date:
2017-10-17
Description:
Gravity surveying is challenging in Antarctica because of its hostile environment and
inaccessibility. Nevertheless, many ground-based, airborne, and shipborne gravity campaigns have been
completed by the geophysical and geodetic communities since the 1980s. We present the first modern
Antarctic-wide gravity data compilation derived from 13 million data points covering an area of 10 million
km2, which corresponds to 73% coverage of the continent. The remove-compute-restore technique was
applied for gridding, which facilitated leveling of the different gravity data sets with respect to an Earth
gravity model derived from satellite data alone. The resulting free-air and Bouguer gravity anomaly grids of
10 km resolution are publicly available. These grids will enable new high-resolution combined Earth gravity
models to be derived and represent a major step forward toward solving the geodetic polar data gap
problem. They provide a new tool to investigate continental-scale lithospheric structure and geological
evolution of Antarctica.
Repository Name:
EPIC Alfred Wegener Institut
Type:
Article
,
isiRev
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