The 2007 caldera collapse at Piton de la Fournaise : new insights from multi-temporal structure-from-motion
We produced new multi-temporal Digital Elevation Models (DEMs) of the April 2007 summit collapse at Piton de la Fournaise from previously unused aerial photographs. This dataset revealed the precise temporal evolution of collapsed volume and caldera morphological changes. Four days after the onset o...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Volcanica
2020-04-01
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| Series: | Volcanica |
| Subjects: | |
| Online Access: | https://www.jvolcanica.org/ojs/index.php/volcanica/article/view/55 |
| _version_ | 1819071439965257728 |
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| author | Allan Derrien Aline Peltier Nicolas Villeneuve Thomas Staudacher |
| author_facet | Allan Derrien Aline Peltier Nicolas Villeneuve Thomas Staudacher |
| author_sort | Allan Derrien |
| collection | DOAJ |
| description | We produced new multi-temporal Digital Elevation Models (DEMs) of the April 2007 summit collapse at Piton de la Fournaise from previously unused aerial photographs. This dataset revealed the precise temporal evolution of collapsed volume and caldera morphological changes. Four days after the onset of an eruption at an unusually low elevation, the summit started to collapse (20:48 UTC April 5th). During the first 30 hours, collapsing was relatively fast (840 m3 s-1 average), and continued for at least the following 12 days, at a slower rate (46 m3 s-1 average). On April 19th, the collapse reached 96% of its final volume, while the remaining 4% were probably attained by May 1st (end of lava emission at the vent). The post-collapse hydrothermal activity in the caldera is closely associated with the main ring faults evidenced as active during the collapse, which are now preferential paths for fluids to reach the surface. |
| first_indexed | 2024-12-21T17:21:51Z |
| format | Article |
| id | doaj.art-c639ba368dfb4f5c96bfc8a21bf309a6 |
| institution | Directory Open Access Journal |
| issn | 2610-3540 |
| language | English |
| last_indexed | 2024-12-21T17:21:51Z |
| publishDate | 2020-04-01 |
| publisher | Volcanica |
| record_format | Article |
| series | Volcanica |
| spelling | doaj.art-c639ba368dfb4f5c96bfc8a21bf309a62022-12-21T18:56:08ZengVolcanicaVolcanica2610-35402020-04-0131556510.30909/vol.03.01.556555The 2007 caldera collapse at Piton de la Fournaise : new insights from multi-temporal structure-from-motionAllan Derrien0Aline Peltier1Nicolas Villeneuve2Thomas Staudacher3Institut de Physique du Globe de ParisObservatoire Volcanologique du Piton de la FournaiseObservatoire Volcanologique du Piton de la Fournaise; Université de La RéunionObservatoire Volcanologique du Piton de la FournaiseWe produced new multi-temporal Digital Elevation Models (DEMs) of the April 2007 summit collapse at Piton de la Fournaise from previously unused aerial photographs. This dataset revealed the precise temporal evolution of collapsed volume and caldera morphological changes. Four days after the onset of an eruption at an unusually low elevation, the summit started to collapse (20:48 UTC April 5th). During the first 30 hours, collapsing was relatively fast (840 m3 s-1 average), and continued for at least the following 12 days, at a slower rate (46 m3 s-1 average). On April 19th, the collapse reached 96% of its final volume, while the remaining 4% were probably attained by May 1st (end of lava emission at the vent). The post-collapse hydrothermal activity in the caldera is closely associated with the main ring faults evidenced as active during the collapse, which are now preferential paths for fluids to reach the surface.https://www.jvolcanica.org/ojs/index.php/volcanica/article/view/55calderacollapse4d mappingpiton de la fournaisegeodynamicsvolcano |
| spellingShingle | Allan Derrien Aline Peltier Nicolas Villeneuve Thomas Staudacher The 2007 caldera collapse at Piton de la Fournaise : new insights from multi-temporal structure-from-motion Volcanica caldera collapse 4d mapping piton de la fournaise geodynamics volcano |
| title | The 2007 caldera collapse at Piton de la Fournaise : new insights from multi-temporal structure-from-motion |
| title_full | The 2007 caldera collapse at Piton de la Fournaise : new insights from multi-temporal structure-from-motion |
| title_fullStr | The 2007 caldera collapse at Piton de la Fournaise : new insights from multi-temporal structure-from-motion |
| title_full_unstemmed | The 2007 caldera collapse at Piton de la Fournaise : new insights from multi-temporal structure-from-motion |
| title_short | The 2007 caldera collapse at Piton de la Fournaise : new insights from multi-temporal structure-from-motion |
| title_sort | 2007 caldera collapse at piton de la fournaise new insights from multi temporal structure from motion |
| topic | caldera collapse 4d mapping piton de la fournaise geodynamics volcano |
| url | https://www.jvolcanica.org/ojs/index.php/volcanica/article/view/55 |
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