Publications
Filter Total Items: 3004
Magma intrusion and volatile ascent beneath Norris Geyser Basin, Yellowstone National Park Magma intrusion and volatile ascent beneath Norris Geyser Basin, Yellowstone National Park
Recent activity has provided new insights into the causes of surface deformation in and around the Yellowstone Caldera, a topic that has been debated since the discovery of caldera floor uplift more than four decades ago. An episode of unusually rapid uplift (>15 cm/yr) centered near Norris Geyser Basin along the north caldera rim began in late 2013 and continued until a Mw 4.9...
Authors
Charles Wicks, Daniel Dzurisin, Jacob B. Lowenstern, Jerry L. Svarc
Constraints on eruption processes and event masses for the 2016–2017 eruption of Bogoslof volcano, Alaska, through evaluation of IASI satellite SO2 masses and complementary datasets Constraints on eruption processes and event masses for the 2016–2017 eruption of Bogoslof volcano, Alaska, through evaluation of IASI satellite SO2 masses and complementary datasets
Bogoslof volcano, Alaska, experienced at least 70 explosive eruptions between 12 December 2016 and 31 August 2017. Due to its remote location and limited local monitoring network, this eruption was monitored and characterized primarily using remote geophysical and satellite techniques. SO2 emissions from Bogoslof were persistently detected by the Infrared Atmospheric Sounding...
Authors
Taryn Lopez, Lieven Clarisse, Hans Schwaiger, Alexa R. Van Eaton, Matthew W. Loewen, David Fee, John J. Lyons, Kristi L. Wallace, Cheryl Searcy, Aaron Wech, Matthew M. Haney, David J. Schneider, Nathan Graham
An experimental investigation of interaction between andesite and hyperacidic volcanic lake water An experimental investigation of interaction between andesite and hyperacidic volcanic lake water
Alteration in magmatic-hydrothermal systems leads to distinct changes in rock texture and mineralogy, and a strong redistribution of elements between fluid and rock. Here, we experimentally interacted andesite scoria with hyperacidic, high-sulfidation style fluids from Kawah Ijen volcano (Indonesia) at 25 and 100˚C, seeking to reproduce the textures observed in natural samples from this...
Authors
Vincent van Hinsberg, Kim Berlo, Jacob B. Lowenstern
Mechanisms for ballistic block ejection during the 2016–2017 shallow submarine eruption of Bogoslof volcano, Alaska Mechanisms for ballistic block ejection during the 2016–2017 shallow submarine eruption of Bogoslof volcano, Alaska
Ejection of ballistic blocks was a characteristic feature of the 2016–2017 Bogoslof eruption. High-resolution satellite images acquired throughout the duration of the 9-month long eruptive period permitted the recognition and mapping of ballistic blocks on the surface of Bogoslof Island. Many of the satellite images recorded the accumulation of ballistic material over several individual...
Authors
Christopher F. Waythomas, Larry G. Mastin
Petrologic insights into rift zone magmatic interactions from the 2011 eruption of Kīlauea Volcano, Hawaiʻi Petrologic insights into rift zone magmatic interactions from the 2011 eruption of Kīlauea Volcano, Hawaiʻi
The high frequency of historical eruptions at Kīlauea Volcano presents an exceptional opportunity to address fundamental questions related to the transport, storage, and interaction of magmas within rift zones. The Nāpau Crater area on Kīlauea’s East Rift Zone (ERZ) experienced nine fissure eruptions within 50 years (1961–2011). Most of the magma intruded during these frequent eruptions...
Authors
Brett H. Walker, Michael O. Garcia, Tim R. Orr
Seismic character and progression of explosive activity during the 2016-2017 eruption of Bogoslof volcano, Alaska Seismic character and progression of explosive activity during the 2016-2017 eruption of Bogoslof volcano, Alaska
Bogoslof volcano, in the central Aleutian arc, experienced a major eruption between December 2016 and August 2017 that was characterized by explosive activity (VEI 2 to 3) and the extrusion of lava domes. The Alaska Volcano Observatory tracked the activity in real-time using seismicity observed on distant stations as well as infrasound, lightning, satellite data, and occasional visual
Authors
Cheryl Searcy, John Power
Using conceptual models to relate multiparameter satellite data to subsurface volcanic processes in Latin America Using conceptual models to relate multiparameter satellite data to subsurface volcanic processes in Latin America
Satellite data have been extensively used to identify volcanic behavior. However, the physical subsurface processes causing any individual manifestation of activity can be ambiguous. We propose a classification scheme for the cause of unrest that simultaneously considers three multiparameter satellite observations. The scheme is based on characteristics of the volcanic system (open...
Authors
Kevin Reath, Matthew Pritchard, Juliet Biggs, Ben Andrews, Susi Ebmeier, Marco Bagnardi, Tarsilo Girona, Paul Lundgren, Taryn Lopez, Michael P. Poland
Goals and development of the Alaska Volcano Observatory Seismic Network and application to forecasting and detecting volcanic eruptions Goals and development of the Alaska Volcano Observatory Seismic Network and application to forecasting and detecting volcanic eruptions
The Alaska Volcano Observatory (AVO) seismic network has been in operation since 1988 and during this time has grown from 29 to 217 seismic stations providing real-time monitoring of 32 active volcanoes in Alaska, as well as useful data for regional earthquake monitoring. Since 1988, AVO has detected 59 volcanic eruptions at Aleutian arc volcanoes, and 31 of these have been captured by...
Authors
John Power, Matthew M. Haney, Steven M Botnick, James P. Dixon, David Fee, Max Kaufman, Dane M. Ketner, John J. Lyons, Thomas Parker, John F. Paskievitch, Cyrus Read, Cheryl Searcy, Scott D. Stihler, Gabrielle Tepp, Aaron Wech
Lassen Volcanic National Park Lassen Volcanic National Park
No abstract available.
Authors
R.F. Hopson, Michael A. Clynne
Clawpack: Building an open source ecosystem for solving hyperbolic PDEs Clawpack: Building an open source ecosystem for solving hyperbolic PDEs
Clawpack is a software package designed to solve nonlinear hyperbolic partial differential equations using high-resolution finite volume methods based on Riemann solvers and limiters. The package includes a number of variants aimed at different applications and user communities. Clawpack has been actively developed as an open source project for over 20 years. The latest major release...
Authors
Kyle T. Mandli, Aron J. Ahmadia, Marsha J Berger, Donna A Calhoun, David L. George, Yiannis Hadjimichael, David I. Ketcheson, Grady I. Lemoine, Randall J. LeVeque
Post-collapse gravity increase at the summit of Kīlauea Volcano, Hawaiʻi Post-collapse gravity increase at the summit of Kīlauea Volcano, Hawaiʻi
We conducted gravity surveys of the summit area of Kīlauea Volcano, Hawaiʻi, in November 2018 and March 2019, with the goal of determining whether there was any mass change at depth following the volcano's May–August 2018 caldera collapse. Surface deformation between the two surveys was minimal, but we measured a gravity increase (maximum 44 μGal) centered on the caldera that can be...
Authors
Michael P. Poland, Elske de Zeeuw-van Dalfsen, Marco Bagnardi, Ingrid A. Johanson
Assessment of leachable elements in volcanic ashfall: A review and evaluation of a standardized protocol for ash hazard characterization Assessment of leachable elements in volcanic ashfall: A review and evaluation of a standardized protocol for ash hazard characterization
Volcanic ash presents a widespread and common hazard during and after eruptions. Complex interactions between solid ash surfaces and volcanic gases lead to the formation of soluble salts that may be mobilized in aqueous environments. A variety of stakeholders may be concerned about the effects of ash on human and animal health, drinking water supplies, crops, soils and surface runoff. As...
Authors
Carol Stewart, David Damby, Ines Tomasek, Claire J. Horwell, Geoffrey S. Plumlee, Maria Aurora Armienta, Maria Gabriela Ruiz Hinojosa, Moya Appleby, Pierre Delmelle, Shane Cronin, Christopher J Ottley, Clive Oppenheimer, Suzette A. Morman