Monitoring of water fluxes by self-potential
and TDR probes in the unsaturated vadoze zone
during an intense cyclone
Frédéric Feder a,b, A. Finizola c, M. Crovisier c and N. Payet. a,c
a CIRAD, UPR recyclage et risque, La Réunion, F-97 408 Saint-Denis, FRANCE b CIRAD, UPR recyclage et risque, LMI IE SOL, BP 1386, Dakar, SÉNÉGAL
c Géosciences Réunion – IPGP, université de la Réunion, F-97715 Saint-Denis, FRANCE
Andosol
Réunion Island
A pit dug down to 9 m and was
equipped with TDR (humidity)
and Self-Potential (SP) probes
connected to a datalogger
Gamède cyclone:
360 mm in 3 days
The more the measurements of
humidity are close to the surface, the
more they increase earlier and quickly.
The SP signals are divided into two groups according to the depth.
As the depth increases, the signals of SP probes reach their minimum later. These fluctuations have remained low
over the entire signal (a few mV to ten mV) throughout the period.