DefVolc: Interface and web service for fast computation of volcano displacement - CNRS - Centre national de la recherche scientifique Accéder directement au contenu
Communication Dans Un Congrès Année : 2022

DefVolc: Interface and web service for fast computation of volcano displacement

Valerie Cayol
Yo Fukushima
  • Fonction : Auteur
Delphine Smittarello
  • Fonction : Auteur
Farshid Dabaghi
  • Fonction : Auteur
  • PersonId : 949682
Marine Tridon
  • Fonction : Auteur
Olivier Bodart
  • Fonction : Auteur
Jean-Luc Froger
  • Fonction : Auteur
Nicolas d'Oreye
  • Fonction : Auteur
Chrsitelle Wauthier
  • Fonction : Auteur
Tara Shreve
  • Fonction : Auteur

Résumé

DefVolc is a suite of programs and a web service intended to help the rapid interpretation of InSAR data, acquired on volcanoes at an increased frequency thanks to the various dedicated satellites. Our objective is to help to rapidely inverse volcano displacements, whether these displacements result from fractures (sheet intrusions or faults) or massive magma reservoirs. These sources may have complex geometries, and they may deform simultaneously. Moreover, volcanoes are associated with prominent topographies. This makes the analysis of surface displacements complex. To appropriately analyse the InSAR displacements, we conduct inverse modelling, using 3D elastostatic boundary element models and a neighbourhood optimization algorithm. We simultaneously invert non-linear model parameters (source geometry and location) and linear model parameters (source stress changes), and further assess mean model parameters and confidence intervals. In order to speed up the setting up of inversions, we developed a users friendly graphical interface. In order to accelerate the inversions, they run on clusters. A web server is proposed to registered users in order to run the inversions on University Clermont Auvergne clusters. An application is shown for the May 2021 Nyiragongo eruption, for which models were conducted as the intrusive crisis was going on.
Fichier non déposé

Dates et versions

hal-04308623 , version 1 (27-11-2023)

Identifiants

  • HAL Id : hal-04308623 , version 1

Citer

Valerie Cayol, Yo Fukushima, Delphine Smittarello, Farshid Dabaghi, Marine Tridon, et al.. DefVolc: Interface and web service for fast computation of volcano displacement. Colloque Scientifique 2022 du Groupe de Recherche Interdisciplinaire Grand Rift Africain (GDR Rift), CNRS, Nov 2022, Lyon, France. ⟨hal-04308623⟩
9 Consultations
1 Téléchargements

Partager

Gmail Facebook X LinkedIn More