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A Project on Local Ties and Co-Locations in Antarctica
P.Sarti(1), J.Manning(2),
A.Capra(3), L.Vittuari(4)
(1) Institute of Radioastronomy - CNR, Italy;
(2) Geoscience Australia,
Australia;
(3)Polytechnic of Bari - II Fac. of Engineering, Taranto, Italy;
(4) DISTART
- University of Bologna, Italy
E-mail: p.sarti@ira.cnr.it
Abstracts
Co-locations between Space Geodesy techniques are nowadays fundamental
for global geodetic multitechnique products (e.g.: ITRF,
EOP). When co-locations involve
tide gauges and other geophysical instruments, the importance
of geodetic observatories increases, widening the research field
and the scientific perspectives.
In order
to be effective, co-locations must be accurately measured
with efficient
and comprehensive
local ties performed with terrestrial measurements. Work
is being done on this subject and a few methodologies have already been
tested and presented.
Geoscience
Australia and the Italian Institute of Radioastronomy-CNR
have separately developed methodologies capable to produce SINEX files for
co-located
Space Geodesy techniques.
The information contained in
SINEX files is fundamental for a complete and rigorous approach
to techniques combination.
These SINEX have been used or tested for ITRF2000 computation
and results have been very encouraging. Starting from this
positive experience and making
use
of the knowledge acquired on this topic, we have decided
to start a new project in one of the most inacessible and unknown parts
of planet earth:
Antarctica.
The quality of scientific information coming from this region
has to be of the
highest level and its quantity possibly increased: it is
fundamental for a good understanding of global geophysical processes. With
this presentation, we are
reviewing the most recent situation that concerns the Antarctic
co-locations and the amount and quality of information currently
available.
We
are also presenting the joint Italian-Australian project
on local ties that we
hope will be soon
part of the GIANT programme
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