Results 171 to 180 of about 93,230 (195)

Magma Chamber Response to Ice Unloading: Applications to Volcanism in the West Antarctic Rift System. [PDF]

open access: yesGeochem Geophys Geosyst
Coonin AN   +5 more
europepmc   +1 more source

Volcano Geodesy: Recent developments and future challenges

open access: yesJournal of Volcanology and Geothermal Research, 2017
Peer ...
Michael Poland, Freysteinn Sigmundsson
exaly   +6 more sources

Unraveling long-term volcano flank instability at Pacaya Volcano, Guatemala, using satellite geodesy

Journal of Volcanology and Geothermal Research, 2021
Abstract Edifice collapse represents one of the most dangerous volcanic hazards threatening communities and infrastructure near volcanoes, having caused over 20,000 casualties in the past 400 years. Despite its prevalence across volcanic settings, flank instability has mostly been considered at ocean island volcanoes.
Christelle Wauthier
exaly   +2 more sources

Volcano geodesy and magma dynamics in Iceland

Journal of Volcanology and Geothermal Research, 2006
Abstract Here we review the achievements of volcano geodesy in Iceland during the last 15 years. Extensive measurements of crustal deformation have been conducted using a variety of geodetic techniques, including leveling, electronic distance measurements, campaign and continuous Global Positioning System (GPS) geodesy, and interferometric analysis ...
Halldor Geirsson   +2 more
exaly   +4 more sources

Volcano geodesy: challenges and opportunities for the 21st century

Philosophical Transactions Series A, Mathematical, Physical, and Engineering Sciences, 2000
Intrusions of magma beneath volcanoes deform the surrounding rock and, if the intrusion is large enough, the overlying ground surface.
Daniel Dzurisin
exaly   +2 more sources

Volcano geodesy in the Cascade arc, USA

Bulletin of Volcanology, 2017
Experience during historical time throughout the Cascade arc and the lack of deep-seated deformation prior to the two most recent eruptions of Mount St. Helens might lead one to infer that Cascade volcanoes are generally quiescent and, specifically, show no signs of geodetic change until they are about to erupt.
Michael Poland   +2 more
exaly   +2 more sources

Magma storage and diking revealed by GPS and InSAR geodesy at Pacaya volcano, Guatemala

Bulletin of Volcanology, 2019
GPS measurements from a campaign network at Pacaya volcano, Guatemala, occupied from 2009 to 2015 were combined with InSAR data from 2013 to 2014 to model deformation sources for two eruptive time periods: 2009–2011 and 2013–2014. The GPS data for both of these time periods show downward vertical and outward horizontal deformation greater than 25 cm at
Christelle Wauthier   +2 more
exaly   +2 more sources

The changing shapes of active volcanoes: History, evolution, and future challenges for volcano geodesy

Journal of Volcanology and Geothermal Research, 2006
At the very heart of volcanology lies the search for the dplumbing systemsT that form the inner workings of Earth’s active volcanoes. By their very nature, however, the magmatic reservoirs and conduits that underlie these active volcanic systems are elusive; mostly they are observable only through circumstantial evidence, using indirect, and often ...
Michael Poland, Andrew Newman
exaly   +2 more sources

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