The objectives of OMIV are to provide to the scientific community consistent and harmonized monitoring datasets that will allow:

• to document and learn more on the physical processes that control landslide dynamics,
• to use these dataset to develop and validate landslide deformation/propagation models,
• to extract patterns that may characterize changes in the landslide response to forcing and propose possible forerunners,
• provide benchmarks datasets for the development of original landslide investigation methods.

The OMIV landslides are monitored using a multi-technique approach.

OMIV multi-technique monitoring approach

OMIV has the responsibility for data acquisition and distribution:

• on 4 sites in the French Alps (La Clapière, Séchilienne, Super-Sauze, Mas Avignonet)
• for 4 categories of observation (deformation, seismology, meteorology, hydro-geochemistry)

In 2017, SNO-OMIV operates 16 GPS (12 dual frequency, 4 low-cost single frequency), 60 tacheometric benchmarks, 50 vertical (1C) and 14 three-component (3C) seismic sensors, 7 meteorological stations, 7 hydrological stations (with different parameters), and 11 water sampling points.

The detailed objectives of OMIV are:

1. To maintain on the long-term the recording of these four categories of observation on-site,
2. To develop the same acquisition protocol on the monitored landslides (measurement techniques, space and time data acquisition frequency, quality control criteria),
3. To validate, store and provide an open access of the raw data to the scientific community,
4. To propose advanced products in the form of time series of displacement, time series of hydro-meteorological observations, and seismic catalogues.