Three-dimensional density structure of La Soufrière de Guadeloupe lava dome from simultaneous muon radiographies and gravity data

Abstract : Muon imaging has recently emerged as a powerful method to complement standard geophysical tools in the understanding of the Earth's subsurface. Muon measurements can yield a “radiography” of the average density along the muon path, allowing to image large volumes of a geological body from a single observation point. Here we jointly invert muon data from three simultaneous telescope acquisitions together with gravity data to estimate the three-dimensional density structure of the La Soufrière de Guadeloupe lava dome. Our unique datas et allows us to achieve an unprecedented spatial resolution with this novel technique. The retrieved density model reveals an extensive, low-density anomaly where the most active part of the volcanic hydrothermal system is located, supporting previous studies that indicate this region as the most likely to be involved in a partial edifice collapse.
Type de document :
Article dans une revue
Geophysical Research Letters, American Geophysical Union, 2017, 44 (13), pp.6743-6751. 〈10.1002/2017GL074285〉
Liste complète des métadonnées

Littérature citée [33 références]  Voir  Masquer  Télécharger

https://hal-insu.archives-ouvertes.fr/insu-01561114
Contributeur : Isabelle Dubigeon <>
Soumis le : mercredi 12 juillet 2017 - 13:34:11
Dernière modification le : mardi 29 mai 2018 - 12:50:56

Fichier

Rosas-Carbajal_et_al-2017-Geop...
Fichiers éditeurs autorisés sur une archive ouverte

Identifiants

Collections

Citation

Marina Rosas-Carbajal, Kevin Jourde, Jacques Marteau, Sebastien Deroussi, Jean-Christophe Komorowski, et al.. Three-dimensional density structure of La Soufrière de Guadeloupe lava dome from simultaneous muon radiographies and gravity data. Geophysical Research Letters, American Geophysical Union, 2017, 44 (13), pp.6743-6751. 〈10.1002/2017GL074285〉. 〈insu-01561114〉

Partager

Métriques

Consultations de la notice

129

Téléchargements de fichiers

17