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Related: About this forumEcuador's Reventador volcano erupts in a splash of lava
Ecuador's Reventador volcano erupts in a splash of lava
Posted December 22, 2019
Ecuador's rumbling Reventador volcano lit up the night sky on Sunday (December 22), spewing incandescent rock and lava down its slopes.
- video at link -
https://uk.reuters.com/video/watch/ecuadors-reventador-volcano-erupts-in-a-id646364566?chan=c9rkm5dr
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Ecuador's Reventador volcano erupts in a splash of lava (Original Post)
Judi Lynn
Dec 2019
OP
Judi Lynn
(160,545 posts)1. Ecuador's El Reventador Volcano Continually Remakes Itself
A research team from Ecuadors Geophysical Institute keeps a close eye on an unusually active and unstable volcano in the nations remote jungles.
Explosion and pyroclastic flows at El Reventador volcano. The Instituto Geofísico of the Escuela Politécnica Nacional in Quito, Ecuador, monitors this active volcano using field campaigns and a network of instruments. Credit: E. Gaunt, IG/EPN
By Marco Almeida, H. Elizabeth Gaunt, and Patricio Ramón 18 March 2019
El Reventador is currently the most active volcano in Ecuador. When this volcano (whose name translates as the Exploder) erupts, it sends incandescent rock projectiles into the air, along with ash columns approximately 3 kilometers high. The volcano also releases significant amounts of lava flows, volcanic bombs, and ash from flow and fall deposits onto the surrounding ground. This relatively small stratovolcano has destroyed and rebuilt its edifice on a large scale throughout its evolution. Its eruptive behavior changes rapidly, and its complex behavior is significantly different from that of all other volcanoes in the Ecuadorian Andes.
Aerial view of El Reventador volcano, showing the
emission column after an explosion on 27 August
2017. Credit: P. Ramon, IG/EPN
During the past 3 years, El Reventador has repeatedly destroyed and rebuilt itself on a smaller scale, and inherent instabilities in its edifice pose an ongoing hazard. This hazard is particularly severe on the active cone, where complex effusive and explosive events occur on a daily basis. Our research group, which monitors this remote jungle volcano, has found evidence of multiple small collapses in the border flanks of the crater, complex multivent behavior, and the opening and closing of new vents on a relatively short timescaleweeks to months. Our studies are providing new insights into the inner workings of this volcanic system.
Monitoring El Reventador
El Reventador (Figure 1a) is part of the back-arc volcanism on the eastern side of the Cordillera Real of Ecuador, located approximately 90 kilometers (km) east of the capital city of Quito. The Instituto Geofísico (IG) of the Escuela Politécnica Nacional (EPN) in Quito monitors the activity of this remote volcano. A very large explosive eruption in 2002 initiated the current period of activity, prompting the IG to install a permanent, telemetered seismic monitoring station in 2003.
Over the past 16 years, the IGs monitoring capabilities at El Reventador have expanded into a comprehensive network of seismometers, infrasound stations, thermal and visual cameras, a digital optical absorption spectroscopy (DOAS) gas monitoring station, and acoustic flowmeter lahar monitoring stations within the caldera itself (Figure 1b). Since 2016, 10 ash meters installed on the volcano have collected high-quality volcanic ash samples for ongoing petrological monitoring of the eruption [Bernard, 2013].
More images and text:
https://eos.org/science-updates/ecuadors-el-reventador-volcano-continually-remakes-itself
Cartoonist
(7,317 posts)3. I saw one of those volcanic bombs in the video
Early on, lower left
Xipe Totec
(43,890 posts)2. El Reventador literally means The Exploder. Aptly named. nt