Estimates of mass variations from GRACE data in Argentina

AYELEN PEREIRA; MARÍA CRISTINA PACINO; RENE FORSBERG

Rosario

Jornada; II Jornadas de Ciencia y Tecnología. Divulgación de la Producción Científica y Tecnológica de la UNR; 2008

Secretaría de Ciencia y Tecnología de la UNR

Nota: Este es el mismo trabajo que fue presentado en el Simposio Internacional de la IAG Gravity, Geoid and Earth observation, Grecia, Junio 2008.Gravimetric satellite missions introduce a new concept in the gravitational field modeling, since they provide valuable information about the geodynamic behavior of our planet. The satellite campaign GRACE allows to obtain monthly variations of the gravity field for a certain region; furthermore, these changes can be derived in terrestrial water storage (groundwater, snow) and postglacial rebound, for example. The aim of this work is to show the temporal variation of the gravity field detected over the continental territory of Argentina with a software especially made by the KMS for GRACE solutions. Trend as well as Amplitude maps of these variations show important features in three zones. One of them located at the Patagonia, at glacial regions; another one in correspondence with the Paraná River basin, one of the biggest rivers in the world. We can also detect a variation near Los Andes Mountain Chain, in a traditional oil exploration and exploitation area. In a next stage, this variations will be compared and verified with data obtained from others sources, like hydrological and glacial models.