Preferential Water Infiltration Path in a Slow-Moving Clayey Earthslide Evidenced by Cross-Correlation of Hydrometeorological Time Series (Charlaix Landslide, French Western Alps)

Table 1

Dates and characteristics of the experiments.

Experiment	Installation date	Characteristics	Sampling period
Inclinometer i1	September 2010	Borehole equipped with a 25 m deep inclinometer casing.	1 to 3 months
		Definitively sheared in late November 2012
ERT profile pe01	03 August 2012	62 electrodes, 5 m apart, in a multigradient configuration	X
Coring s1	September 2012	25.2 m deep coring	X
Boreholes p1 and p2	September 2012	8.5 m and 12.5 m deep boreholes equipped with pressure sensors	1 hour
Inclinometer i2	July 2013	Borehole equipped with a 40 m deep inclinometer casing.	1 to 3 months
		Definitively sheared after mid-March 2015
ERT profile pe02	09 August 2013	76 electrodes, 2 m apart, in a multigradient and dipole-dipole	X
		Configuration
EM profiling	17 February 2014	EM31 mapping in the SE part of the landslide	X
GNSS monitoring	27 November 2014	Real-time kinematic GNSS measurements	1 to 3 months
	10 March 2015
	28 July 2015
EM profiling	28 July 2015	EM31 mapping in the NW part of the landslide	X
GNSS monitoring	7 October 2015	Real-time kinematic GNSS measurements	1 to 3 months
	17 March 2016
Water infiltration tests w1 and w2	17 March 2016	Beerkan infiltration tests	X
GNSS monitoring	15 June 2016	Real-time kinematic GNSS measurements	1 to 3 months
	29 September 2016
	8 December 2016
	22 June 2017