Three-dimensional density structure of La Soufrière de Guadeloupe lava dome from simultaneous muon radiographies and gravity data
| Autor: | Dominique Gibert, Sébastien Deroussi, Kevin Jourde, Jacques Marteau, Marina Rosas-Carbajal, Jean-Christophe Komorowski |
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| Rok vydání: | 2017 |
| Předmět: |
geography
Muon Muon tomography geography.geographical_feature_category 010504 meteorology & atmospheric sciences Anomaly (natural sciences) Lava dome Geophysics 010502 geochemistry & geophysics 01 natural sciences Physics::Geophysics law.invention Telescope Volcano law Muography General Earth and Planetary Sciences Image resolution Geology 0105 earth and related environmental sciences |
| Zdroj: | Geophysical Research Letters. 44:6743-6751 |
| ISSN: | 0094-8276 |
| Popis: | 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 Soufriere 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. |
| Databáze: | OpenAIRE |
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