ALLEGRE, Vincent; DENIS, Alain; COINTE, Alain; COUREAU, Jean-Luc

doi:10.3997/2214-4609.202120104

Métadonnées

Afficher la notice complète

Licence d’utilisation du document

ALLEGRE, Vincent

Institut de Mécanique et d'Ingénierie [I2M]

DENIS, Alain

Archéologie, Terre, Histoire, Sociétés [Dijon] [ARTeHiS]
Génie des procédés frigorifiques pour la sécurité alimentaire et l'environnement [UR FRISE]

COINTE, Alain

Université de Bordeaux [UB]

Langue

Communication dans un congrès avec actes

Ce document a été publié dans

27th European Meeting of Environmental and Engineering Geophysics, Near Surface Geoscience Conference and Exhibition, 2021-08, Virtual. 2021, vol. 2021, p. 1-5

European Association of Geoscientists & Engineers

Résumé en anglais

The mechanical response of a few maritime pines was investigated by a series of experiments at the field scale. During the overturning of two trees, a seismic array was deployed at the ground surface to continuously monitor the micro-seismicity associated with the failure of their root-system. We identified seismic events during the traction process applied to each tree. A threshold force value and a significant duration of the traction process seem to be needed in order for cracks to happen, and for seismic events to be recorded. We identified tens of seismic events, especially during the most advanced stages of the experiments, prior to complete failure of the root-system. However, a few events were observed during early stage of the experiment, when the mechanical solicitation was still in the elastic regime. Using pairs of geophones and seismic intensity ratios, we localized the epicenters of most of the events within the seismic network. According to the sensitivity of the array, all epicenters are roughly localized within a 1 square-meter area. The estimation of epicenters show that the events are aligned to the direction of traction, on the opposite side of the tree.< Réduire

Mots clés en anglais

Forestry

Seismology

Epicentre

Field experiment

Field scale

Localised

Maritime pines

Mechanical response

Root system

Seismic event

Seismic monitoring

System failures

Métadonnées

Partager cette publication !

Licence d’utilisation du document

Seismic Monitoring of a Maritime Pine Root-System Failure During Its Overturn: A Field Experiment

Langue

Ce document a été publié dans

Résumé en anglais

Mots clés en anglais

URI

DOI

Unités de recherche