Determination of vertical land movements through the integration of tide gauge observations and satellite altimetry data at the Brazilian Vertical Datum from 2002 to 2015

Satellite altimetry missions and tide gauges allow the monitoring of sea level variations over time. While monitor relative to a local reference, satellite do so in relation Earth’s geocenter. From comparison between time series generated by these two methods, we observed differences that may be related possible vertical land movement (VLM). Our objective this study is determine linear trends VLMs from difference trend found TOPEX/Poseidon, JASON 1, 2 3 (v SA ) gauge Imbituba Santa Catarina (SC), Brazil TG ). For this, demarcated cells along tracks at radius up 500 km ocean location station. The mean values for v (1992-2017) (2002-2015) were 2.5 mm/a ±1.2 5.4 ±1.9 mm/a, while (2007-2015) 7.1 ±4.6 13.0 ±4.2 respectively. VLM obtained combination GNSS showed results with better consistency longer series.