François Prévot
Responsable du WP 4.3 Chercheur Institut de physique du globe de Paris Université Paris Diderot Aller sur la page de François Prévot Aller voir la tâche CRITEX de François Prévot
Read moreLaurent Prevot
Responsable WP 1.2 Chargé de recherche LISAH Aller sur la page de Laurent Prevot Aller voir la tâche CRITEX de Laurent Prevot
Read moreMathieu Sebilo
Responsable du WP 8.2 Chercheur Sorbonne – Université Pierre et Marie Curie – Paris 6 Institut d’Ecologie et d’Environnement de Paris (IEES Paris) Aller sur la page de Mathieu Sebilo Aller voir la tâche CRITEX de Mathieu Sebilo
Read morePascal Sailhac
Responsable WP 6.5 Enseignant-chercheur Ecole et Observatoire des Sciences de la Terre Aller sur la page de Pascal Sailhac Aller voir la tâche CRITEX de Pascal Sailhac
Read moreSmall-Scale Seismic Monitoring of Varying Water Levels in Granular Media
Physical properties of soils in the vadose zone, and especially their water content, are characterized by strong spatial and temporal variations mostly driven by weather and anthropogenic activities. To understand this variability and help water resource management, seismic methods have been recently suggested as a complement to electrical and electromagnetic techniques. The simultaneous in situ estimation of pressure (P) and […]
Read more2D characterization of near-surface VP/VS: surface-wave dispersion inversion versus refraction tomography
The joint study of pressure (P-) and shear (S-) wave velocities (VP and VS), as well as their ratio (VP/VS), has been used for many years at large scales but remains marginal in near-surface applications. For these applications, VP and VS are generally retrieved with seismic refraction tomography combining P and SH (shear-horizontal) waves, thus requiring two separate acquisitions. Surface-wave […]
Read moreIntegrated Workflow for Surface-wave Dispersion Inversion and Profiling
While surface-wave prospecting methods are classically applied for the one-dimensional (1D) estimation of shear (S-) wave velocities (Vs), two-dimensional (2D) profiling still requires implementing specific processing and inversion tools that are not yet widely available in the community. We present here a free and open-source tool performing surface-wave inversion and profiling (SWIP) in order to retrieve 2D lateral variations of […]
Read moreInterpretation of magnetic resonance measurements in the varying earth’s magnetic field
At the scale of a magnetic resonance sounding (MRS) field setup, the earth’s magnetic field in the subsurface may vary laterally with depth and over time. These variations can be caused by different natural factors and generally cannot be compensated for by accurate tuning of the measuring device. The varying geomagnetic field (GMF) causes nonresonance conditions of excitation that affect […]
Read moreDistributed Temperature Sensing as a down-hole tool in hydrogeology
Distributed Temperature Sensing (DTS) technology enables down-hole temperature monitoring to study hydrogeological processes at unprecedentedly high frequency and spatial resolution. DTS has been widely applied in passive mode in site investigations of groundwater ow, in-well flow, and subsurface thermal property estimation. However, recent years have seen the further development of the use of DTS in an active mode (A-DTS) for which heat sources are deployed. […]
Read moreUsing DGT passive samplers and MC-ICPMS to determine Pb and Zn isotopic signature of natural water
Increasing numbers of studies use zinc (Zn) and lead (Pb) isotopic compositions to track anthropogenic pollutions in surface water and groundwater. However, given the low content in Pb and Zn in natural waters, we are often restricted for analysis by MC-ICPMS. One solution is to use passive Diffusive Gradients in Thin films (DGT) samplers for in-situ preconcentration of these metals. […]
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