Observatoire Multidisciplinaire des Instabilités de Versants

OMIV Observatory Missions

The Multidisciplinary Observatory of Versant Instabilities (OMIV) monitors four on-going landslides which are representative of the mechanisms involved in the French Alps (hard/soft rock, relatively slow/fast-moving slope).

On each site, the OMIV observatory provides continuous open access recordings of the landslide kinematics, its seismic response, and the hydro-geochemistry characteristics of the slope. These data sets are unique examples worldwide.

The OMIV observatory, a SO-INSU label since 2007 is labelled for:

  • 4 sites in the French Alps (Avignonet, La Clapière, Séchilienne, Super-Sauze);
  • 3 observables on each site:
    1. The displacement kinematics using tiltmeters, extensometers, GPS sensors, remote sensing imaging;
    2. The landslide seismic patterns (endogenous damage using micro-earthquakes and velocity change through time and the slope responses to regional earthquake shaking);
    3. The hydraulic response to weathering forcing (hydro-geochemistry measurements);
  • post-processed data and services
  • free open data sets provided close to real time

The observatory network uses 11 GPS stations, 60 tacheometric benchmarks, 45 1-component and 9 3-component seismic sensors.

All data are openly accessible through a single portal.

OMIV studied landslides

La Clapière Séchilienne Mas d'Avignonet Super Sauze
Site management: GéoAzur Site management: ISTerre Site management: ISTerre Site management: IPGS

Other landslides are studied by OMIV partners. See here.

Overview of data status by observable, as of November 2014