Tag Archives: Outil

SWIP: un workflow intégré pour l’inversion et le profile de la dispersion des ondes de surface

SWIP est une boîte à outils développée par Sylvain Pasquet qui fournit un workflow intégré pour l’inversion et le profilage de la dispersion des ondes de surface, récemment appliqué avec succès à l’imagerie de la zone critique. Un tutoriel a été publié en géophysique : Sylvain Pasquet et Ludovic Bodet (2017). « SWIP: An integrated workflow for surface-wave dispersion inversion and […]

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SWIP: An integrated workflow for surface-wave dispersion inversion and profiling

The simultaneous estimation of 2D pressure (P-) and S-wave velocities (VP and VS, respectively) is a promising approach for imaging subsurface mechanical properties. It can be performed with a single acquisition setup by combining P-wave refraction and surface-wave (SW) analysis. Although SW methods are commonly applied for the 1D estimation of VS, 2D profiling requires the implementation of specific processing […]

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Autonomous Sensors for Measuring Continuously the Moisture and Salinity of a Porous Medium

Papers - Publications scientifiques

The article describes a new field sensor to monitor continuously in situ moisture and salinity of a porous medium via measurements of its dielectric permittivity, conductivity and temperature. It intends to overcome difficulties and biases encountered with sensors based on the same sensitivity principle. Permittivity and conductivity are determined simultaneously by a self-balanced bridge, which measures directly the admittance of […]

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Presentation of a Complex Permittivity-Meter with Applications for Sensing the Moisture and Salinity of a Porous Media

Papers - Publications scientifiques

This paper describes a sensor dedicated to measuring the vertical profile of the complex permittivity and the temperature of any medium in which sensor electrodes are inserted. Potential applications are the estimate of the humidity and salinity in a porous medium, such as a soil. It consists of vertically-stacked capacitors along two conductive parallel cylinders of 5 cm in diameter and at a 10-cm […]

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