Integrated analysis of the terrestrial orbit for the gravimetric data base in the Rio Grande Do Sul state

Full text: Since 1950, terrestrial gravity data of the State of Rio Grande do Sul (RS) have been collected by the Department of Geodesy of the Federal University of Rio Grande do Sul This paper proposes three methods for detecting outliers based on the residue between (M1) data from the digital elevation model of the Shuttle Radar Topography Mission (SRTM) and interpolated observation data of land altimetry surveys conducted; (M2) the interpolated data from the Gravity Recovery and Climate mission Experiment (GRACE) gravity confronting each observation with the observations of the Earth's gravity and (M3) the data relating to each observation Bouguer anomaly calculated and interpolated Bouguer anomalies corresponding. The first method identified 217 points (3.00% of the data) associated with altimetry. The second identified 645 points (8.93% of the data) associated with gravity. The third identified 60 points (0.83% of the data) associated with Bouguer anomaly calculated. The criterion for elimination of observations based on the identification of outliers coincident with at least two methods. The outliers corresponding points between altimetry, gravity and Bouguer anomaly were eliminated from the raw database and totaled 177 points, 2.45% of total bank. From the corrected data, we proceeded to the treatment of integrated analysis of geological validation geophysical information, which was generated by the Bouguer anomaly map of the RS. This study featured four geophysical fields in the study area