IANIGLA   20881
INSTITUTO ARGENTINO DE NIVOLOGIA, GLACIOLOGIA Y CIENCIAS AMBIENTALES
Unidad Ejecutora - UE
artículos
Título:
A Terrestrial Reference Frame (TRF), coordinates and velocities for South American stations: contributions to Central Andes
Autor/es:
MACKERN, M. VIRGINIA; MATEO, M. LAURA; ROBIN, ANA MARIA; CALORI, ANDREA
Revista:
Advances in Geosciences (ADGEO)
Editorial:
Copernicus Publications
Referencias:
Año: 2009 vol. 22 p. 181 - 184
ISSN:
1680-7340
Resumen:
Satellite positioning systems allow the fixing of
the location of a point on the Earths surface with very good
precision and accuracy. To do this, however, it is necessary
to determine the point coordinates taking account the reference
system and the movements that affect them because of
tectonic plate movements. These reference systems are materialized
by a significant number of continuous measurement
stations in South America. In SIRGAS (Sistema de Referencia
Geoc´entrico para las Am´ericas), there are four Analysis
Centers that process the data collected from satellites of the
Global Navigation Satellite Systems (GNSS), with the primary
purpose to maintain the international terrestrial reference
frame through calculation of the coordinates and velocities
of the continuous GNSS stations of the SIRGAS-CON
Network.
In this work, we demonstrate the quality of the solutions
from CIMA, one of the SIRGAS official processing centers
operating in Mendoza, Argentina, in comparison with other
South American processing centers. The importance of precise
calculations of coordinates and velocities in a global
frame is also shown. Finally, we give estimations of velocities
from stations located within deformation zones in the
Central Andes.