The third GEOTREF PhD has been defended by Viven Navelot at 2 pm, the 31^st October 2018, in the Ecole Nationale Supérieure de Géologie de Nancy: Structural and petrophysical characterization of a geothermal system in a volcanic subduction arc context. Example of the Guadeloupe archipelago.

Abstract

Geothermal systems located on active volcanic islands lying above subduction areas are increasingly being prospected and exploited as they represent significant, renewable and accessible energy resources with relatively low operating costs. The Basse-Terre Island in the Guadeloupe archipelago and more precisely the Vieux-Habitants area gathers several indicators allowing to suppose the occurrence of a high-temperature hydrothermal system.

The second GEOTREF PhD has been defended by Keurfon Luu on septembre 2018 at 2 pm, the 28^th September, in the Ecole des Mines de Paris : Numerical optimization using stochastic evolutionary algorithms: application to seismic tomography inverse problems.

Abstract

Seismic traveltime tomography is an ill-posed optimization problem due to the non-linear relationship between traveltime and velocity model. Besides, the solution is not unique as many models are able to explain the observed data. The non-linearity and non-uniqueness issues are typically addressed by using methods relying on Monte Carlo Markov Chain that thoroughly sample the model parameter space. However, these approaches cannot fully handle the computer resources provided by modern supercomputers.

GEOTREF will be represented in Lille, Francia with 3 oral communications on Thursday the 25^th, October, in the morning, in the session 15:3 Geothermal energy.

Characterization of an exhumed high temperature paleo-geothermal reservoir by clay minerals and secondary phases identifications in Terre-de-Haut island (Les Saintes archipelago, Guadeloupe).

L’étude de paléo-réservoirs exhumés dans les Petites Antilles : vers une meilleure compréhension des réservoirs géothermaux profonds en contexte d’arc volcanique.

Caract̩risation des propri̩t̩s r̩servoirs de roches volcaniques appliqu̩e au projet de g̩othermie GEOTREF sur Basse РTerre de Guadeloupe.

The first GEOTREF PhD has been defended by Lucie Legendre the 12^th of July, 2018, in the Université des Antilles, pôle Guadeloupe: Kinematics of brittle deformations along the northern Lesser Antilles Arc.

Publication of a GEOTREF article in Journal of Volcanology and Geothermal Research.

Petrophysical properties of volcanic rocks and impacts of hydrothermal alteration in the Guadeloupe Archipelago (West Indies).

A parallel Competitive Particle Swarm Optimization for non-linear first arrival traveltime tomography and uncertainty quantification.

GEOTREF was represented in Vienna, Austria with 3 oral communications.

Structural and thermo-physical characterizations of a potential geothermal system in Basse-Terre Island (Guadeloupe archipelago, Lesser Antilles).

Short summary of petrophysical and structural studies to characterize a geothermal system in Guadeloupe.