Publication Date:
2017-04-04
Description:
In this paper we have developed a new method for measuring in situ soil permeability,
which is based on the theory of radial gas advection through an isotropic porous medium. The method was
tested in the laboratory and at several locations on the island of Vulcano (Aeolian Islands, Italy). It
consists of a special device which generates a gas source at a depth of 50 cm and it permits measurement of
the relative induced pressure in nearby soil at different depths. The characteristic error of the method was
less than 10%.
Furthermore, soil permeability measurements were carried out in the island of Vulcano during different
periods of the year (between May 2000 and June 2001). A strong decrease in permeability in the upper
layers of the soil during and after rainfall was noted, with very poor correlations between the spatial
distributions of soil CO2 flux and shallow soil permeability.
Description:
Published
Description:
897-914
Description:
JCR Journal
Description:
reserved
Keywords:
Gas soil permeability
;
volcanic areas
;
radial gas advection
;
soil degassing
;
04. Solid Earth::04.08. Volcanology::04.08.01. Gases
Repository Name:
Istituto Nazionale di Geofisica e Vulcanologia (INGV)
Type:
article
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