Publications
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Advances in natural hazard science and assessment, 1963-2013
No abstract available.
Authors
Mary Lou Zoback, Eric Geist, John Pallister, David P. Hill, Simon Young, Wendy McCausland
The late Holocene dry period: multiproxy evidence for an extended drought between 2800 and 1850 cal yr BP across the central Great Basin, USA
Evidence of a multi-centennial scale dry period between ∼2800 and 1850 cal yr BP is documented by pollen, mollusks, diatoms, and sediment in spring sediments from Stonehouse Meadow in Spring Valley, eastern central Nevada, U.S. We refer to this period as the Late Holocene Dry Period. Based on sediment recovered, Stonehouse Meadow was either absent or severely restricted in size at ∼8000 cal yr BP.
Authors
Scott A. Mensing, Saxon E. Sharpe, Irene Tunno, Don W. Sada, Jim M. Thomas, Scott W. Starratt, Jeremy Smith
Composition and origin of rhyolite melt intersected by drilling in the Krafla geothermal field, Iceland
The Iceland Deep Drilling Project Well 1 was designed as a 4- to 5-km-deep exploration well with the goal of intercepting supercritical hydrothermal fluids in the Krafla geothermal field, Iceland. The well unexpectedly drilled into a high-silica (76.5 % SiO2) rhyolite melt at approximately 2.1 km. Some of the melt vesiculated while extruding into the drill hole, but most of the recovered cuttings
Authors
R.A. Zierenberg, P. Schiffman, G.H. Barfod, C.E. Lesher, N.E. Marks, Jacob B. Lowenstern, A.K. Mortensen, E.C. Pope, D.K. Bird, M.H. Reed, G.O. Friðleifsson, W.A. Elders
Rangewide glaciation in the Sierra Nevada, California
The 600-km-long Sierra Nevada underwent extensive Pleistocene glaciation except for its southernmost 100 km. Presently, ∼1700 small glaciers and ice masses near the crest of the range occur above 3250 m in elevation; these covered an area of ∼50 km2 in 1972. Fourteen of the largest glaciers decreased by about one half in area during the period from 1900 to 2004.Rock glaciers, generally glacial ice
Authors
James G. Moore, Barry C. Moring
Moderate-magnitude earthquakes induced by magma reservoir inflation at Kīlauea Volcano, Hawai‘i
Although volcano-tectonic (VT) earthquakes often occur in response to magma intrusion, it is rare for them to have magnitudes larger than ~M4. On 24 May 2007, two shallow M4+ earthquakes occurred beneath the upper part of the east rift zone of Kīlauea Volcano, Hawai‘i. An integrated analysis of geodetic, seismic, and field data, together with Coulomb stress modeling, demonstrates that the earthqua
Authors
Christelle Wauthier, Diana C. Roman, Michael P. Poland
Response of diatoms and silicoflagellates to climate change in the Santa Barbara Basin during the past 250 years and the rise of the toxic diatom Pseudo-nitzschia australis
Diatoms and silicoflagellate assemblages were examined in two year-increments of varved samples spanning the interval from 1748 through 2007 in Santa Barbara Basin (SBB) box core SBBC0806 to determine the timing and impact of possible 20th century warming on several different components of the plankton. Diatoms (Thalassionema nitzschioides =TN) and silicoflagellates (Distephanus speculum s.l. =DS)
Authors
John A. Barron, David Bukry, David B. Field, Bruce Finney
A fluid-driven earthquake swarm on the margin of the Yellowstone caldera
Over the past several decades, the Yellowstone caldera has experienced frequent earthquake swarms and repeated cycles of uplift and subsidence, reflecting dynamic volcanic and tectonic processes. Here, we examine the detailed spatial-temporal evolution of the 2010 Madison Plateau swarm, which occurred near the northwest boundary of the Yellowstone caldera. To fully explore the evolution of the swa
Authors
David R. Shelly, David P. Hill, Frederick Massin, Jamie Farrell, Robert B. Smith, Taka'aki Taira
On the absolute calibration of SO2 cameras
Sulphur dioxide emission rate measurements are an important tool for volcanic monitoring and eruption risk assessment. The SO2 camera technique remotely measures volcanic emissions by analysing the ultraviolet absorption of SO2 in a narrow spectral window between 300 and 320 nm using solar radiation scattered in the atmosphere. The SO2 absorption is selectively detected by mounting band-pass inter
Authors
Peter Lübcke, Nicole Bobrowski, Sebastian Illing, Christoph Kern, Jose Manuel Alvarez Nieves, Leif Vogel, Johannes Zielcke, Hugo Delgados Granados, Ulrich Platt
Constraints on the upper crustal magma reservoir beneath Yellowstone Caldera inferred from lake-seiche induced strain observations
Seiche waves in Yellowstone Lake with a ~78-minute period and heights
Authors
Karen Luttrell, David Mencin, Oliver Francis, Shaul Hurwitz
A new model for the growth of basaltic shields based on deformation of Fernandina volcano, Galápagos Islands
Space-geodetic measurements of surface deformation produced by the most recent eruptions at Fernandina – the most frequently erupting volcano in the Galápagos Archipelago – reveal that all have initiated with the intrusion of subhorizontal sills from a shallow magma reservoir. This includes eruptions from fissures that are oriented both radially and circumferentially with respect to the summit cal
Authors
Marco Bagnardi, Falk Amelung, Michael P. Poland
Population vulnerability and evacuation challenges in California for the SAFRR tsunami scenario
The SAFRR tsunami scenario models the impacts of a hypothetical yet plausible tsunami associated with a magnitude 9.1 megathrust earthquake east of the Alaska Peninsula. This report summarizes community variations in population vulnerability and potential evacuation challenges to the tsunami. The most significant public-health concern for California coastal communities during a distant-source tsun
Authors
Nathan Wood, Jamie Ratliff, Jeff Peters, Kimberley Shoaf
Continuous gravity measurements reveal a low-density lava lake at Kīlauea Volcano, Hawai‘i
On 5 March 2011, the lava lake within the summit eruptive vent at Kīlauea Volcano, Hawai‘i, began to drain as magma withdrew to feed a dike intrusion and fissure eruption on the volcanoʼs east rift zone. The draining was monitored by a variety of continuous geological and geophysical measurements, including deformation, thermal and visual imagery, and gravity. Over the first ∼14 hours of the drain
Authors
Daniele Carbone, Michael P. Poland, Matthew R. Patrick, Tim R. Orr