Modeling of geodynamic effects affecting tide and GNSS measurements
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Abstract
Studies of the different types of tides have become more important because of their application in the precise determination of the orbit of artificial satellites and in the maintenance of the precise coordinates of Global Navigation Satellite System (GNSS) stations. This research provides the modeling of some geodynamic components that directly influence the solidity of the GNSS and tide stations, as well as inserting errors in the accurate determination of the Mean Sea Level (MSL). Using the Precision Point Positioning (PPP) approach to verify the crustal displacement and the modeling of the earth Tide and ocean tide load, the objective of this work is to analyze and quantify each of the geodynamic forces that act in the tide gauge and the GNSS station RBMC-NEIA. The models analyzed for the ocean tide load and the earth tide, as well as the crust displacement, are in agreement with the geodynamic influence applied to the station and the tide gauge, where it is verified that they have little vertical movement and the MSL maintains a low variation, increasing gradually over time.
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