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  • GNSS Data Providers
    9 January 2017, by eprout01
  • About
    21 October 2022, by Médéric Gravelle

    The GNSS solution named ’GT3’ is produced by the German Research Centre for Geosciences (GFZ) for the International GNSS Service (IGS) working group TIGA. It contains position time series for 319 permanent GNSS stations expressed in the ITRF2014 reference frame over the period January 1994 to December 2020. This GNSS solution was carried out within the framework of the 3rd IGS reanalysis (reprocessing) campaign (Repro3). Among the 319 stations processed by GFZ, as many as 272 have (…)

  • DOI ULR6a solution
    16 mai 2024, par eprout01
  • Résultats des mesures de contrôle
    3 avril 2008, par Guy Woppelmann

    Les résultats des mesures de contrôles ’in situ’ sont directement intégrés dans les pages correspondants au marégraphe concerné. Les missions de contrôle font généralement l’objet d’un rapport dans lequel figure le résultat de l’exploitation des mesures d’étalonnage (diagramme de Van de Casteele). Voici un exemple : contrôle du marégraphe de Socoa (Saint Jean-de-Luz) en mai 2007.

  • Fournisseurs GNSS
    6 janvier 2017, par Mikaël Guichard
  • Download
    25 August 2020, by Médéric Gravelle

    – Vertical velocities table
    The GT2_Vertical-Velocities_Table provides the vertical GPS velocities and uncertainties from the 593 stations fulfilling the criteria of 3 years of minimum length and data gaps not exceeding 30%, estimated by the GFZ group.
    – Daily time series
    The GT2_neu.zip file contains individual station data files of daily position time series in ITRF2014 with respect to the position at the mid time series epoch. These positions are expressed in meters in the local (…)

  • About
    13 September 2013, by Mikaël Guichard

    – Relative sea level trends: The relative sea level trends have been estimated by the PSMSL from the RLR tide gauge dataset of annual times series longer than 30 years with more than 70% of valid data. Only results from tide gauges for which a robust GPS velocity is available are displayed. (More about the PSMSL relative sea level trends). Absolute sea level trends: The absolute (geocentric) sea level trends build upon the above-mentioned relative sea level trends by simply adding the (…)

  • About
    16 September 2014, by Médéric Gravelle

    The basic concept of plate tectonics is that, to a first approximation, the Earth surface is divided into several rigid plates that move with respect to one another but do not deform internally. The motion of each plate can be described by its Eulerian pole (coordinates and angular velocity). In order to better visualize the internal deformation of a single plate and to visualize the relative movements between plates, we propose a tool to select a reference plate, whose motion can be (…)

  • Download
    21 October 2022, by Médéric Gravelle

    – Vertical velocities table
    The GT3_Vertical-Velocities_Table provides the vertical GPS velocities and uncertainties from the 296 stations fulfilling the criteria of 3 years of minimum length and data gaps not exceeding 30%, estimated by the GFZ group.
    – Daily time series
    The GT3_neu.zip file contains individual station data files of daily position time series in ITRF2014 with respect to the position at the reference epoch. These positions are expressed in meters in the local frame (…)

  • Description of the DORIS tracking beacons
    10 December 2010, by Frank

    The DORIS network of tracking beacons was established by IGN in 1986 and has been run and maintained by them since then. Geodetic files describe the stations of the DORIS network. They are avilable on the web site of IDS (International DORIS Service) on a page that also has a dynamic map showing the geographical distribution of the network (click on the link).