Sangay volcano (Ecuador): the opening of two new vents, a drumbeat seismic sequence and a new lava flow in late 2021
On 2 December, 2021 we recorded a sequence of drumbeat seismic events at Sangay volcano. This sequence lasted several hours and resulted in two explosive emissions whose eruptive columns reached 9 km above crater. Unexpectedly, these explosions did not produce any ash fallout in the inhabited areas...
| Main Authors: | , , , , , , , , , , , , , , , , |
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| Format: | Article |
| Language: | English |
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Volcanica
2022-10-01
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| Series: | Volcanica |
| Subjects: | |
| Online Access: | https://www.jvolcanica.org/ojs/index.php/volcanica/article/view/157 |
| _version_ | 1798019822701772800 |
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| author | Silvana Hidalgo Francisco Javier Vasconez Jean Battaglia Benjamin Bernard Pedro Espín Sébastien Valade María-Fernanda Naranjo Robin Campion Josué Salgado Marco Córdova Marco Almeida Stephen Hernández Gerardo Pino Elizabeth Gaunt Andrew Bell Patricia Mothes Mario Ruiz |
| author_facet | Silvana Hidalgo Francisco Javier Vasconez Jean Battaglia Benjamin Bernard Pedro Espín Sébastien Valade María-Fernanda Naranjo Robin Campion Josué Salgado Marco Córdova Marco Almeida Stephen Hernández Gerardo Pino Elizabeth Gaunt Andrew Bell Patricia Mothes Mario Ruiz |
| author_sort | Silvana Hidalgo |
| collection | DOAJ |
| description | On 2 December, 2021 we recorded a sequence of drumbeat seismic events at Sangay volcano. This sequence lasted several hours and resulted in two explosive emissions whose eruptive columns reached 9 km above crater. Unexpectedly, these explosions did not produce any ash fallout in the inhabited areas around the volcano. This drumbeat sequence was produced after a series of morphological changes, including the opening of two new vents (W and N) and a landslide. These occurred during an enhanced period of ground deformation and degassing. Further analysis of satellite images allowed us to determine that this sequence was associated with the widening of the recently open vent north of the main crater, and the extrusion of a new lava flow. Timely communication of this event to the authorities and the population was ensured by the IG-EPN by following internal protocols. The corresponding short reports reached more than 300,000 people. |
| first_indexed | 2024-04-11T16:45:48Z |
| format | Article |
| id | doaj.art-35df4f498a3a4c24b92d67466558258e |
| institution | Directory Open Access Journal |
| issn | 2610-3540 |
| language | English |
| last_indexed | 2024-04-11T16:45:48Z |
| publishDate | 2022-10-01 |
| publisher | Volcanica |
| record_format | Article |
| series | Volcanica |
| spelling | doaj.art-35df4f498a3a4c24b92d67466558258e2022-12-22T04:13:33ZengVolcanicaVolcanica2610-35402022-10-015229531110.30909/vol.05.02.295311141Sangay volcano (Ecuador): the opening of two new vents, a drumbeat seismic sequence and a new lava flow in late 2021Silvana Hidalgo0https://orcid.org/0000-0001-6386-9502Francisco Javier Vasconez1https://orcid.org/0000-0003-2000-1636Jean Battaglia2https://orcid.org/0000-0002-9513-1200Benjamin Bernard3https://orcid.org/0000-0002-0333-5493Pedro Espín4https://orcid.org/0000-0003-1945-8110Sébastien Valade5https://orcid.org/0000-0002-6687-7302María-Fernanda Naranjo6https://orcid.org/0000-0003-2555-7983Robin Campion7https://orcid.org/0000-0003-1638-8479Josué Salgado8https://orcid.org/0000-0002-9584-0656Marco Córdova9https://orcid.org/0000-0002-1038-1041Marco Almeida10https://orcid.org/0000-0002-6694-8916Stephen Hernández11https://orcid.org/0000-0002-8990-4027Gerardo Pino12https://orcid.org/0000-0002-7483-6666Elizabeth Gaunt13https://orcid.org/0000-0002-1787-2062Andrew Bell14https://orcid.org/0000-0002-5633-6289Patricia Mothes15https://orcid.org/0000-0002-0650-5531Mario Ruiz16https://orcid.org/0000-0002-0872-6573Instituto Geofísico - Escuela Politécnica NacionalInstituto Geofísico de la Escuela Politécnica NacionalUniversité Clermont Auvergne, CNRS, IRD, OPGC, Laboratoire Magmas et Volcans, Clermont-Ferrand, FranceInstituto Geofísico - Escuela Politécnica NacionalInstituto Geofísico - Escuela Politécnica NacionalInstituto de Geofísica, Universidad Nacional Autónoma de México, Mexico City, MexicoInstituto Geofísico - Escuela Politécnica NacionalInstituto de Geofísica, Universidad Nacional Autónoma de México, Mexico City, MexicoInstituto Geofísico - Escuela Politécnica NacionalInstituto Geofísico - Escuela Politécnica NacionalInstituto Geofísico - Escuela Politécnica NacionalInstituto Geofísico - Escuela Politécnica NacionalInstituto Geofísico - Escuela Politécnica NacionalInstituto Geofísico - Escuela Politécnica NacionalSchool of GeoSciences, University of Edinburgh, Edinburgh, UKInstituto Geofísico - Escuela Politécnica NacionalInstituto Geofísico - Escuela Politécnica NacionalOn 2 December, 2021 we recorded a sequence of drumbeat seismic events at Sangay volcano. This sequence lasted several hours and resulted in two explosive emissions whose eruptive columns reached 9 km above crater. Unexpectedly, these explosions did not produce any ash fallout in the inhabited areas around the volcano. This drumbeat sequence was produced after a series of morphological changes, including the opening of two new vents (W and N) and a landslide. These occurred during an enhanced period of ground deformation and degassing. Further analysis of satellite images allowed us to determine that this sequence was associated with the widening of the recently open vent north of the main crater, and the extrusion of a new lava flow. Timely communication of this event to the authorities and the population was ensured by the IG-EPN by following internal protocols. The corresponding short reports reached more than 300,000 people.https://www.jvolcanica.org/ojs/index.php/volcanica/article/view/157sangaydrumbeat sequencemorphological changesrapid public outreachvolcano monitoring |
| spellingShingle | Silvana Hidalgo Francisco Javier Vasconez Jean Battaglia Benjamin Bernard Pedro Espín Sébastien Valade María-Fernanda Naranjo Robin Campion Josué Salgado Marco Córdova Marco Almeida Stephen Hernández Gerardo Pino Elizabeth Gaunt Andrew Bell Patricia Mothes Mario Ruiz Sangay volcano (Ecuador): the opening of two new vents, a drumbeat seismic sequence and a new lava flow in late 2021 Volcanica sangay drumbeat sequence morphological changes rapid public outreach volcano monitoring |
| title | Sangay volcano (Ecuador): the opening of two new vents, a drumbeat seismic sequence and a new lava flow in late 2021 |
| title_full | Sangay volcano (Ecuador): the opening of two new vents, a drumbeat seismic sequence and a new lava flow in late 2021 |
| title_fullStr | Sangay volcano (Ecuador): the opening of two new vents, a drumbeat seismic sequence and a new lava flow in late 2021 |
| title_full_unstemmed | Sangay volcano (Ecuador): the opening of two new vents, a drumbeat seismic sequence and a new lava flow in late 2021 |
| title_short | Sangay volcano (Ecuador): the opening of two new vents, a drumbeat seismic sequence and a new lava flow in late 2021 |
| title_sort | sangay volcano ecuador the opening of two new vents a drumbeat seismic sequence and a new lava flow in late 2021 |
| topic | sangay drumbeat sequence morphological changes rapid public outreach volcano monitoring |
| url | https://www.jvolcanica.org/ojs/index.php/volcanica/article/view/157 |
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