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Scientists identify flank instability at a volcano with history of collapse

Scientists identify flank instability at a volcano with history of collapse
Landslides caused by the collapse of unstable volcanoes are one of the major dangers of volcanic eruptions. A method to detect long-term movements of these mountains using satellite images could help identify previously overlooked instability at some volcanoes, according to Penn State scientists.
“Whenever there is a large volcanic eruption, there is a chance that if a flank of the volcano is unstable there could be a collapse,” said Judit Gonzalez-Santana, a doctoral student in the Department of Geosciences. “To better explore this hazard, we applied an increasingly popular and more sensitive time-series method to look at these movements, or surface deformation, over longer time periods.” ....

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New method to identify previously overlooked instability at some volcanoes

New method to identify previously overlooked instability at some volcanoes
The results provide finer detail of volcanic flank motion.
The collapse of unstable volcanoes prompts landslides, one of the significant dangers of volcanic eruptions.
The large volcanic eruption indicates a flank of the unstable volcano, and there could be a collapse.
In a new study, Penn State Scientists suggests a more sensitive time-series method to detect these mountains’ long-term movements. The technique uses satellite images to identify previously overlooked instability at some volcanoes.
Utilizing the time-series technique, the scientists discovered surface deformation related to flank motion at Pacaya, an active volcano in Guatemala, from 2011 to 2013 when the volcano was mostly quiet and expanded, paving the way to an ejection in 2014. Past work had not recognized flank motion during this time. ....

Guatemala General , Christelle Wauthier , Judit Gonzalez Santana , Department Of Geosciences , Penn State Scientists , Interferometric Synthetic Aperture Radar , குவாத்தமாலா ஜநரல் , தீர்ப்பு கோன்சலஸ் சாந்தனா , துறை ஆஃப் புவி அறிவியல் , பென் நிலை விஞ்ஞானிகள் ,

Volcano news: Scientists identify potential landslides in event of a major eruption

Pacaya is more than 2,500 metres tall and is almost constantly active.
More than 10,000 people live within a three-mile radius of the volcano, which could be extremely problematic in the event of a landslide.
Judit Gonzalez-Santana, a doctoral student in the Department of Geosciences at Penn State University, said: “If you take into consideration the last avalanche (1,000 years ago) travelled 15 miles away, anyone living in the valleys around the volcano could be at risk.”
Now, researchers have begun using satellite observations of the volcano to measure flank stability.
Volcano news: Scientists identify potential landslides in event of a major eruption (Image: GETTY) ....

Guatemala General , Christelle Wauthier , Judit Gonzalez Santana , Geothermal Research , Department Of Geosciences At Penn State University , Mount Etna , Penn State University , Privacy Notice , Interferometric Synthetic Aperture Radar , குவாத்தமாலா ஜநரல் , தீர்ப்பு கோன்சலஸ் சாந்தனா , புவிவெப்ப ஆராய்ச்சி , துறை ஆஃப் புவி அறிவியல் இல் பென் நிலை பல்கலைக்கழகம் , ஏற்ற எட்னா , பென் நிலை பல்கலைக்கழகம் , ப்ரைவஸீ அறிவிப்பு ,

Scientists identify flank instability at a volcano with history of collapse

Scientists identified flank instability at Pacaya, an active volcano in Guatemala.
Image: Kirsten Stephens/Penn State
Landslides caused by the collapse of unstable volcanoes are one of the major dangers of volcanic eruptions. A method to detect long-term movements of these mountains using satellite images could help identify previously overlooked instability at some volcanoes, according to Penn State scientists.
“Whenever there is a large volcanic eruption, there is a chance that if a flank of the volcano is unstable there could be a collapse,” said Judit Gonzalez-Santana, a doctoral student in the Department of Geosciences. “To better explore this hazard, we applied an increasingly popular and more sensitive time-series method to look at these movements, or surface deformation, over longer time periods.” ....

Guatemala General , Christelle Wauthier , Judit Gonzalez Santana , Geothermal Research , Department Of Geosciences , Institute For Computational , Data Sciences , Penn State , Interferometric Synthetic Aperture Radar , Future Investigators , Space Science , குவாத்தமாலா ஜநரல் , தீர்ப்பு கோன்சலஸ் சாந்தனா , புவிவெப்ப ஆராய்ச்சி , துறை ஆஃப் புவி அறிவியல் , நிறுவனம் க்கு கணக்கீட்டு , தகவல்கள் அறிவியல் , பென் நிலை , எதிர்கால புலனாய்வாளர்கள் , இடம் அறிவியல் ,