Publication Date:
2022-09-01
Description:
In the last years the scientific literature has been enriched with new models of the Moho
depth in the Antarctica Continent derived by the seismic reflection technique and refraction
profiles, receiver functions and seismic surface waves, but also by gravimetric observations
over the continent. In particular, the gravity satellite missions of the last two decades have
provided data in this remote region of the Earth and have allowed the investigation of the
crust properties. Meanwhile, other important contributions in this direction has been given
by the fourth International Polar Year (IPY, 2007–2008) which started seismographic and
geodetic networks of unprecedented duration and scale, including airborne gravimetry over
largely unexplored Antarctic frontiers. In this study, a new model for the Antarctica Moho
depths is proposed. This new estimation is based on no satellite gravity measures, thanks to the
availability of the gravity database ANTGG2015, that collects gravity data from ground-base,
airborne and shipborne campaigns. In this new estimate of the Moho depths the contribution of
the gravity measures has been maximized reducing any correction of the gravity measures and
avoiding constraints of the solution to seismological observations and to geological evidence.
With this approach a pure gravimetric solution has been determined. The model obtained is
pretty in agreement with other Moho models and thanks to the use of independent data it can
be exploited also for cross-validating different Moho depths solutions.
Description:
Published
Description:
1404–1420
Description:
1T. Struttura della Terra
Description:
JCR Journal
Keywords:
Antarctica
;
Moho
;
Gravity inversion
;
Collocation
;
ANTGG2015
Repository Name:
Istituto Nazionale di Geofisica e Vulcanologia (INGV)
Type:
article
