Dataset : OMIV - Time series of electrical resistivity data recorded on landslides

Access to data

Rights

Collection	OMIV

Quotation

Observatoire Multidisciplinaire des Instabilités de Versant (2021): OMIV - Time series of electrical resistivity data recorded on landslides. Observatoire Multidisciplinaire des Instabilités de Versant. FR-18008901306731-2021-03-16

General metadata

Identifier : local : FR-18008901306731-2021-03-16

Description :

Time series of electrical resistivity data acquired on OMIV landslides at a daily or sub-daily frequency depending on the sites and observation periods. The data are acquired at the surface through electrical panels or at depths in boreholes.
For the electrical panels, the resistivity data are disseminated at three processing levels:
- Level 1: raw electrical intensity and potential data,
- Level 2: filtered apparent resistivity data,
- Level 3: inverted resistivity data.
For boreholes, data is provided at level 2: filtered apparent resistivity data.
Additional data (logging data, electrical resistivity profiles acquired in temporary campaigns) are provided if available.

Disciplines :

geochemistry & geophysics (sciences of the universe), geology (sciences of the universe), geosciences, multidisciplinary (sciences of the universe)

Keywords :

drilling, electrical resistivity, geophysics, hydrogeology (GEMET), landslide (GEMET)

Dates :

Data acquisition : from 1 May 2011 ongoing

Data provision : 1 Mar 2021

Metadata record :

Creation : 16 Mar 2021

Update : 22 Mar 2021

Language : English (eng)

Audience : University: licence, University: master, Research, Policy maker

Coverages

Spatial coverage :

CLAP_P1: on Earth, latitude 44° 14' 53" N, longitude 6° 56' 15" E, at 1141m of altitude
LVAL_P1: on Earth, latitude 44° 24' 19" N, longitude 6° 38' 24" E, at 1474m of altitude
VENC_P1: on Earth, latitude 43° 43' 22" N, longitude 7° 7' 47" E, at 200m of altitude
PEG2: on Earth, latitude 43° 47' 46" N, longitude 3° 19' 14" E, at 338m of altitude
PEG_P1: on Earth, latitude 43° 47' 37" N, longitude 3° 19' 17" E, between 358m and 359m of altitude
SAUZ_P1: on Earth, latitude 44° 20' 55" N, longitude 6° 40' 34" E, at 1871m of altitude

Time coverage :

CLAP_P1: 2012-11-01 and after
VENC_P1: 2018-07-01 and after
PEG2: 2012-04-06 and after
PEG_P1: between 2018-10-01 and 2019-12-01
SAUZ_P1: between 2011-05-01 and 2012-08-01
LVAL_P1: between 2012-12-01 and 2019-05-01

Administrative metadata

Data creator	Affiliation
Observatoire Multidisciplinaire des Instabilités de Versant (FRA)

Contributors	Affiliation	Role
Maurin Vidal	OSU OCA (FRA)	data collector
Romain Besso	OSU OCA (FRA)	data collector
Jean-Philippe Malet	OSU EOST (FRA)	project member
Stéphanie Gautier	OSU OREME (FRA)	project member
Thomas Lebourg	OSU OCA (FRA)	project member
Juliette Fabre	OSU OREME (FRA)	related person
Myriam Lajaunie	OSU EOST (FRA)	related person
Catherine Bertrand	Chrono-environnement (FRA)	project member
Birgit Jochum	GBA (AUT)	related person
David Ottowitz	GBA (AUT)	related person
Xavier Wanner	OSU OREME (FRA)	related person

Publisher : Observatoire Multidisciplinaire des Instabilités de Versant

Label : Service National d'Observation Observatoire Mutidisciplinaire des Instabilités de Versants

Science contact : Stéphanie Gautier

Computing contact : Juliette Fabre

Project and funders :

SNO OMIV - Hydrogeophysics
- EOST, OCA, OREME, OSUG (OSU)
- INSU (CNRS)

Access : available

Technical metadata

Formats : text/csv

Data acquisition methods :

Observational data :
1. Surface electrical data:
5 sites were equipped with permanent Electrical Resistivity Tomography (ERT) devices (GEOMON or Syscal Pro).
Temporary ERT devices may also be deployed on some of these sites.
Raw data (intensity and electrical potential) and electrodes coordinates (profiles) are sent to OSU OREME data center. They are provided in CSV format, with a PDF file for site description.

2. Permanent borehole electrical data:
Borehole electrical data were measured on Pégairolles site since 2012 by a permanent electrode device designed and managed by Imageau. Raw data are sent to Imageau and stored there. Raw data of apparent resistivity are cleaned by scientists (outliers removed) and inserted into the OSU OREME database. Data are provided in CSV format.

3. Logging data
Logging measurements were made on Pégairolles site between 2009 and 2012 : diameter, borehole fluid properties, natural radioactivity, rock electrical resistivity, full waveform Sonic and acoustic and optical borehole images. Raw data were automatically cleaned (outliers removed) when inserted into OSU OREME database. Cleaned data are provided in TXT format.

4. Core data
Core samples from Pégairolles site were measured by a Multi-Sensor Core Logger. Raw data were automatically cleaned (outliers removed) when inserted into OSU OREME database. Cleaned data are provided in CSV format.
Simulation or computational data :
Surface electrical data:
Permanent or temporary surface electrical data (ERT) are automatically processed when inserted into OSU OREME database:
(i) apparent resistivity is computed, then filtered ;
(ii) filtered data is inverted with the Python Pygimli library to compute resistivity data.
Filtered and inverted data are respectively provided in CSV and VTK format.

Datatype : Dataset