Publications
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Status and needs for seismic instrumentation of structures along the Hayward fault
The inventory of structures in heavily urbanized communities within the greater San Francisco (SF) Bay area that will experience strong ground motions from the rupture of the Hayward Fault includes a variety of types of recent and older structures built with a variety of materials and to different code standards. Those who remember the effects of the 1989 Loma Prieta earthquake on structures in th
Authors
Erol Kalkan, Mehmet Çelebi
Hawaiian Volcano Observatory Seismic Data, January to December 2007
The U.S. Geological Survey (USGS), Hawaiian Volcano Observatory (HVO) summary presents seismic data gathered during the year. The seismic summary is offered without interpretation as a source of preliminary data and is complete in that most data for events of M=1.5 are included. All latitude and longitude references in this report are stated in Old Hawaiian Datum.
The HVO summaries have been p
Authors
Jennifer S. Nakata, Paul G. Okubo
The Virtual Data Center Tagged-Format Tool: Introduction and executive summary
This Report introduces and summarizes the new Virtual Data Center (VDC) Tagged Format (VTF) Tool, which was developed by a diverse group of seismologists, earthquake engineers, and information technology professionals for internal use by the COSMOS VDC and other interested parties for the exchange, archiving, and analysis of earthquake strong-ground-motion data.
Authors
John R. Evans, Melinda Squibb, Christopher D. Stephens, W.U. Savage, Hamid Haddadi, Charles A. Kircher, Mahmoud M. Hachem
First in situ investigation of a dark wind streak on Mars
[1] Prominent low-albedo wind streaks issue from embayments at the north end of Victoria crater in Meridiani Planum, the site of surface investigations by the Mars Exploration Rover Opportunity. Opportunity was sent to examine the darkest of these wind streaks and compare it to the adjacent soil in the brighter corridor between the streaks. Two nearby sites inside and outside of the streak were se
Authors
Paul E. Geissler, J.R. Johnson, R. Sullivan, Kenneth E. Herkenhoff, K Mittlefeldt, Robin L. Fergason, D. W. Ming, R. I. G. Morrison, S. W. Squyres, Laurence A. Soderblom, M. P. Golombek
Rapid exposure and loss estimates for the May 12, 2008 Mw 7.9 Wenchuan earthquake provided by the U.S. Geological Survey's PAGER system
One half-hour after the May 12th Mw 7.9 Wenchuan, China earthquake, the U.S. Geological Survey’s Prompt Assessment of Global Earthquakes for Response (PAGER) system distributed an automatically generated alert stating that 1.2 million people were exposed to severe-to-extreme shaking (Modified Mercalli Intensity VIII or greater). It was immediately clear that a large-scale disaster had occurred. Th
Authors
P.S. Earle, D. J. Wald, T.I. Allen, K. S. Jaiswal, K.A. Porter, M.G. Hearne
WHE-PAGER Project: A new initiative in estimating global building inventory and its seismic vulnerability
The U.S. Geological Survey’s Prompt Assessment of Global Earthquake’s Response (PAGER) Project and the Earthquake Engineering Research Institute’s World Housing Encyclopedia (WHE) are creating a global database of building stocks and their earthquake vulnerability. The WHE already represents a growing, community-developed public database of global housing and its detailed structural characteristi
Authors
K.A. Porter, K. S. Jaiswal, D. J. Wald, M. Greene, Craig Comartin
An integrated geophysical approach for groundwater and seismic hazard management in Joshua Tree National Park, southern California
Two‐dimensional inversion of audiomagnetotelluric (AMT) sounding data define buried resistivity distributions that reflect subsurface geology and structure within the upper kilometer beneath Pleasant Valley, a 1–2 km‐deep pull‐apart basin in Joshua Tree National Park, southern California. The Park lies within the Eastern California Shear Zone just east of the San Andreas Fault, and is surrounded b
Authors
Darcy McPhee, Victoria E. Langenheim, Bruce A. Chuchel, Louise Pellerin
Liquefaction hazard maps for three earthquake scenarios for the communities of San Jose, Campbell, Cupertino, Los Altos, Los Gatos, Milpitas, Mountain View, Palo Alto, Santa Clara, Saratoga, and Sunnyvale, Northern Santa Clara County, California
Maps showing the probability of surface manifestations of liquefaction in the northern Santa Clara Valley were prepared with liquefaction probability curves. The area includes the communities of San Jose, Campbell, Cupertino, Los Altos, Los Gatos Milpitas, Mountain View, Palo Alto, Santa Clara, Saratoga, and Sunnyvale. The probability curves were based on complementary cumulative frequency distrib
Authors
Thomas L. Holzer, Thomas E. Noce, Michael J. Bennett
Water-chemistry data for selected springs, geysers, and streams in Yellowstone National Park, Wyoming, 2003-2005
Water analyses are reported for 157 samples collected from numerous hot springs, their overflow drainages, and Lemonade Creek in Yellowstone National Park (YNP) during 2003–2005. Water samples were collected and analyzed for major and trace constituents from ten areas of YNP including Terrace and Beryl Springs in the Gibbon Canyon area, Norris Geyser Basin, the West Nymph Creek thermal area, the a
Authors
James W. Ball, R. Blaine McCleskey, D. Kirk Nordstrom, JoAnn M. Holloway
Shallow-conduit dynamics at Stromboli Volcano, Italy, imaged from waveform inversions
Modelling of Very-Long-Period (VLP) seismic data recorded during explosive activity at Stromboli in 1997 provides an image of the uppermost 1 km of its volcanic plumbing system. Two distinct dyke-like conduit structures are identified, each representative of explosive eruptions from two different vents located near the northern and southern perimeters of the summit crater. Observed volumetric chan
Authors
Bernard A. Chouet, Marcello Martini
Remote-controlled pan, tilt, zoom cameras at Kilauea and Mauna Loa Volcanoes, Hawai'i
Lists of important volcano-monitoring disciplines usually include seismology, geodesy, and gas geochemistry. Visual monitoring - the essence of volcanology - is usually not mentioned. Yet, observations of the outward appearance of a volcano provide data that is equally as important as that provided by the other disciplines. The eye was almost certainly the first volcano monitoring-tool used by ear
Authors
Richard P. Hoblitt, Tim R. Orr, Frederic Castella, Peter F. Cervelli
Instrumentation recommendations for volcano monitoring at U.S. volcanoes under the national volcano early warning system
As magma moves toward the surface, it interacts with anything in its path: hydrothermal systems, cooling magma bodies from previous eruptions, and (or) the surrounding “country rock.” Magma also undergoes significant changes in its physical properties as pressure and temperature conditions change along its path. These interactions and changes lead to a range of geophysical and geochemical phenomen
Authors
Seth C. Moran, Jeff T. Freymueller, Richard G. LaHusen, Kenneth A. McGee, Michael P. Poland, John A. Power, David A. Schmidt, David J. Schneider, George Stephens, Cynthia A. Werner, Randall A. White