Publications
Filter Total Items: 2692
Don Swanson: A field volcanology career worth celebrating
Don Swanson has profoundly influenced generations of volcanologists and has made major contributions to our understanding of both silicic and basaltic volcanic systems. He provides an exceptional example of how a gifted scientist can develop entirely new paradigms related to large-scale problems on the basis of decades of study, as exemplified by his work on the emplacement of flood basalts, monit
Authors
Michael P. Poland, Michael O. Garcia, Victor E. Camp, Anita Grunder
Temperature-dependent variations in mineralogy, major element chemistry and the stable isotopes of boron, lithium and chlorine resulting from hydration of rhyolite glass: Constraints from hydrothermal experiments at 150 to 350°C and 25 MPa
Rhyolite-hosted hydrothermal systems in the continental crust contain valuable energy and mineral resources that make them of special interest across several scientific disciplines. Despite extensive research on these systems, the temperature-dependence of chemical reactions between host rocks and aqueous-rich fluids and the mineralogical transformations resulting from these reactions are not well
Authors
Jeffery T. Cullen, Shaul Hurwitz, Jaime D. Barnes, John C. Lassiter, Sarah Penniston-Dorland, Simone Kasemann, James Thordsen
Volcanic hazards in the Pacific U.S. Territories
The Commonwealth of the Northern Mariana Islands, Guam, and American Samoa lie along the western side of the famed Pacific Ring of Fire. Here, the processes of active island and submarine volcanoes produce activity both underwater and in the atmosphere that poses potential hazards to the daily lives of residents and travelers. Since 2000, CNMI volcanoes have erupted six times, and one submarine vo
Authors
Gabrielle Tepp, Brian Shiro, William W. Chadwick
By
Volcano Hazards Program, Volcano Science Center, Agrigan, Ahyi Seamount, Alamagan, Anatahan, Asuncion, Daikoku Seamount , East Diamante, Esmeralda Bank, Farallon de Pajaros, Fukujin Seamount , Guguan, Kasuga 2, Maug Islands, Ofu-Olosega, Pagan, Ruby, Sarigan, South Sarigan Seamount, Supply Reef, Ta'u Island, Tutuila Island, Zealandia Bank, Subduction Zone Science
Potential for increased hydrothermal arsenic flux during volcanic unrest: Implications for California water supply
The hydrothermal systems associated with the restless high-threat volcanoes at Lassen and Long Valley, California, each release large amounts of arsenic (As) to surface waters – ~6 and ~8 metric tons/yr, respectively. The hydrothermal As output can increase during volcanic unrest, as illustrated by a two-fold increase during unrest at Lassen in 2014–15. During that period of unrest, increased As c
Authors
Steven E. Ingebritsen, William C. Evans
Editorial: Synthetic Aperture Radar and natural hazards: Applications and outlooks
The ability of Synthetic Aperture Radar (SAR) to image the Earth’s surface, even through dense cloud cover and in night-and-day conditions, can facilitate the evaluation and monitoring of natural hazards and the management of natural disasters. The family of SAR satellite sensors orbits the Earth at an altitude ranging from 500 to 800 km, following sun-synchronous, near-polar orbits, slightly incl
Authors
Federico Di Traglia, Andrea Ciampalini, Giuseppe Pezzo, Maurizio Battaglia
Hydroacoustic, meteorologic and seismic observations of the 2016 Nansen Ice Shelf calving event and iceberg formation
On 7 April 2016, the Nansen Ice Shelf (NIS) front calved into two icebergs, the first large-scale calving event in >30 years. Three hydrophone moorings were deployed seaward of the NIS in December 2015 and over the following months recorded hundreds of short duration, broadband (10-400 Hz) cryogenic signals, likely caused by fracturing of the ice-shelf. The majority of these icequakes occur betwee
Authors
Robert Dziak, W. S. Lee, Joe Haxel, Haru Matsumoto, Gabrielle Tepp, T-K Lau, Lauren Roche, S H Yun, C. K. Lee, J. Y. Lee, S.T. Yoon
Shear velocity structure from ambient noise and teleseismic surface wave tomography in the Cascades around Mount St. Helens
Mount St. Helens (MSH) lies in the forearc of the Cascades where conditions should be too cold for volcanism. To better understand thermal conditions and magma pathways beneath MSH, data from a dense broadband array are used to produce high‐resolution tomographic images of the crust and upper mantle. Rayleigh‐wave phase‐velocity maps and three‐dimensional images of shear velocity (Vs), generated f
Authors
Kayla Crosbie, Geoff A. Abers, Michael Everett Mann, Helen A. Janiszewski, Kenneth C Creager, Carl W Ulberg, Seth C. Moran
The eruptions of Sinabung and Kelud Volcanoes, Indonesia
No abstract available.
Authors
Kasbani, Hendra Gunawan, Wendy A. McCausland, John S. Pallister, Masato Iguchi, Setsuya Nakada
Coexisting discrete bodies of rhyolite and punctuated volcanism characterize Yellowstone's post‐Lava Creek Tuff caldera evolution
Ion‐microprobe 206Pb/238U geochronology and trace element geochemistry of the unpolished rims and sectioned interiors of zircons from Yellowstone caldera's oldest post‐caldera lavas provide insight into the magmatic system during the prelude and aftermath of the caldera‐forming Lava Creek supereruption. The post‐caldera lavas compose the Upper Basin Member of the Plateau Rhyolite and fall into two
Authors
Christy B Till, Jorge A. Vazquez, Mark E. Stelten, Hannah I Shamloo, Jamie S Shaffer
Locating shallow seismic sources with waves scattered by surface topography: Validation of the method at the Nevada Test Site
Accurate and robust source location is fundamental in seismology. Previously, we proposed a new full waveform location method using waves scattered by topography near the source, and we demonstrated its potential in obtaining accurate source location using synthetic data. In the work presented here, we validate this method with observed seismic data from the 1993 Non-Proliferation Experiment, a ch
Authors
Nian Wang, Yang Shen, Xueyang Bao, Ashton F. Flinders
Hydroacoustic, seismic, and bathymetric observations of the 2014 submarine eruption at Ahyi Seamount, Mariana Arc
Ahyi seamount, a shallow submarine volcano in the Northern Mariana Islands, began erupting on April 23, 2014. Hydroacoustic eruption signals were observed on the regional Mariana seismic network and on distant hydrophones, and NOAA scuba divers working in the area soon after the eruption began heard and felt underwater explosion sounds. The NOAA crew observed yellow orange bubble mats along the sh
Authors
Gabrielle Tepp, William W. Chadwick, Matthew M. Haney, John J. Lyons, Robert Dziak, Susan Merle, Dave Butterfield, Charles W. Young
Toutle River debris flows initiated by atmospheric rivers: November 2006
In early November, 2006, an atmospheric river brought heavy rainfall and high freezing levels to the Pacific Northwest. Without snowpack to buffer the hydrologic response, the storm caused widespread landslides and debris flows in drainages sourced from every central Cascades volcano. At Mount St. Helens, in southwestern Washington State, intense rainfall in the crater of the volcano caused at lea
Authors
Adam R. Mosbrucker, Kurt R. Spicer, Jon J. Major