Hinderer J. auteur aut IRD Riccardi U. auteur aut IRD Rosat S. auteur aut IRD Boy J. P. auteur aut IRD Hector Basile auteur aut IRD Calvo M. auteur aut IRD Littel F. auteur aut IRD Bernard J. D. auteur aut IRD text journalArticle eng text/pdf born digital access We investigate a nearly 8-year record (2010-2018) of the superconducting gravimeter OSG-060 located at Djougou (Benin, West Africa). We first perform a tidal analysis with ET34-ANA v7.1 software that leads to the gravimetric amplitude and phase factors for all separable waves according to the available time duration. We test nine different ocean tide models for the main eleven tidal constituents (Ssa, Mm, Mf, Q1, O1, P1, K1, N2, M2, S2, K2). After correction for ocean tidal loading we obtain the real and imaginary parts of the residual vector. We also investigate atmospheric loading which is dominated in this equatorial location by the thermal waves S1 and S2 that are modulated in amplitude by annual and semi-annual components. After correction for ocean loading, we test different air pressure corrections on the tidal gravimetric factors for the waves Sa, Ssa, S1 and S2. We show the rather large discrepancy that exists between the classical single admittance pressure reduction and a hybrid model using global atmospheric models everywhere except in the local zone where the model pressure is replaced by the observed pressure. specialized Time variable gravity Superconducting gravimeter Africa Tides Loading BENIN DJOUGOU 066 134 art. 101692 [11 p.] 2020 0264-3707 https://www.documentation.ird.fr/hor/fdi:010078880 10.1016/j.jog.2019.101692 0264-3707 [F B010078880] https://www.documentation.ird.fr/hor/fdi:010078880 https://www.documentation.ird.fr/intranet/publi/2020/04/010078880.pdf Accès réservé (Intranet de l'IRD) IRD - Base Horizon / Pleins textes 2020-05-19 2025-02-24 fdi:010078880 fre