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| Titel |
Towards water content monitoring in the vadose zone from active seismic |
| VerfasserIn |
Ludovic Bodet, Marine Dangeard, Sylvain Pasquet, Roger Guérin, Damien Jougnot, Laurent Longuevergne, Agnès Rivière, Julien Thiesson |
| Konferenz |
EGU General Assembly 2017
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| Medientyp |
Artikel
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| Sprache |
en
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| Digitales Dokument |
PDF |
| Erschienen |
In: GRA - Volume 19 (2017) |
| Datensatznummer |
250149041
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| Publikation (Nr.) |
 EGU/EGU2017-13355.pdf |
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| Zusammenfassung |
| V P/V S or Poison’s ratio classically permit imaging fluids in rocks but this strategy remains
underused in near-surface applications, hence in hydrogeophysics. Yet, P-wave refraction
tomography and surface-wave dispersion inversion can be combined to produce 2D V P and
V S sections from a single acquisition set up. This approach recently proved to be efficient in
the study of various hydrosystems and in the imaging of the Critical Zone. We
now suggest its time-lapse application in order to help the monitoring of water
content in the vadose zone/aquifer continuum. With both laboratory experiments
and field data, we show how the temporal variations of P-wave travel times and
surface-wave dispersion are strongly associated to the variations of water content
observed locally, thus encouraging to exploit the full wealth of seismic signals in
hydrogeophysics. |
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