INVESTIGADORES
PEREIRA ayelen
artículos
Título:
Evaluation of recent global geopotential models in Argentina
Autor/es:
AYELEN PEREIRA; MARÍA CRISTINA PACINO
Revista:
IAG Series. Gravity, Geoid and Earth Observation
Editorial:
Springer Berlin Heidelberg
Referencias:
Lugar: Berlín; Año: 2010 vol. 135 p. 383 - 388
ISSN:
0939-9585
Resumen:
Recent Earth Geopotential Models (EGMs) represent a great improvement to several applications related to gravity field modeling. These models offer higher accuracy and better resolution of the gravity field. In this research, the most recent model´s behavior like EIGENs, EGM2008 as well as the classic EGM96, are analyzed and compared in Argentina, aiming to know which one suits better in the country. This investigation also studies the differences between EGMs and geoid undulation values (calculated with height data from GPS and spirit leveling) and gravity anomalies (obtained from terrestrial gravimetric campaigns). In principle, a great difference is detected with the satellite-only geopotential models. The EGMs that perform better results are those that include satellite altimetry and terrestrial information in their calculation. The comparison between local data and the results of seven global models is shown with the residual statistic.
