Seismic signatures reveal persistence of soil compaction

Détails

Ressource 1Télécharger: RomeroRuiz2021.pdf (4536.27 [Ko])
Etat: Public
Version: Final published version
Licence: CC BY 4.0
ID Serval
serval:BIB_7AC98D7EAC70
Type
Article: article d'un périodique ou d'un magazine.
Collection
Publications
Institution
Titre
Seismic signatures reveal persistence of soil compaction
Périodique
Vadose Zone Journal
Auteur(s)
Romero-Ruiz Alejandro, Linde Niklas, Baron Ludovic, Solazzi Santiago Gabriel, Keller Thomas, Or Dani
ISSN
1539-1663
1539-1663
Statut éditorial
Publié
Date de publication
07/2021
Volume
20
Numéro
4
Langue
anglais
Résumé
A well-developed soil structure is a key attribute of a productive and functioning soil. Evidence shows that subtle changes in the spatial arrangement and binding of soil constituents impart large changes in soil mechanical and hydraulic properties and associated ecological services. However, these features remain difficult to quantify at spatial scales relevant for agricultural management. In this work, we propose a pedophysical model to interpret macroscopic seismic properties in terms of soil structure. The model captures subtle soil mechanical traits accounting for soil plastic deformation due to compaction. In order to evaluate the model, we use data from field monitoring at an experimental site that revealed elevated seismic velocities in plots that were compacted 5 yr prior to our measurements. Our results show that P-wave velocities carry a strong imprint of soil compaction and are well predicted by the proposed model. The model infers contact areas between aggregates that are nearly threefold larger for compacted than for non-compacted soils, indicating that soils have not recovered from compaction. The study illustrates the potential of seismic methods to identify chronic compaction at field scale.
Mots-clé
Soil Science
Web of science
Open Access
Oui
Création de la notice
30/07/2021 11:09
Dernière modification de la notice
04/08/2021 7:10
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