Publications
Educational Publications
Educational Publications
Selected publications about earthquakes In plain language.
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Simulation of active tectonic processes for a convecting mantle with moving continents Simulation of active tectonic processes for a convecting mantle with moving continents
Numerical models are presented that simulate several active tectonic processes. These models include a continent that is thermally and mechanically coupled with viscous mantle flow. The assumption of rigid continents allows use of solid body equations to describe the continents' motion and to calculate their velocities. The starting point is a quasi-steady state model of mantle...
Authors
V. Trubitsyn, M. Kaban, Walter D. Mooney, C. Reigber, P. Schwintzer
Crustal structure across the Altyn Tagh Range at the northern margin of the Tibetan Plateau and tectonic implications Crustal structure across the Altyn Tagh Range at the northern margin of the Tibetan Plateau and tectonic implications
We present new seismic refraction/wide-angle-reflection data across the Altyn Tagh Range and its adjacent basins. We find that the crustal velocity structure, and by inference, the composition of the crust changes abruptly beneath the Cherchen fault, i.e., ∼100 km north of the northern margin of the Tibetan plateau. North of the Cherchen fault, beneath the Tarim basin, a platform-type...
Authors
J. Zhao, Walter D. Mooney, X. Zhang, Z. Li, Z. Jin, N. Okaya
Seismic characteristics of central Brazil crust and upper mantle: A deep seismic refraction study Seismic characteristics of central Brazil crust and upper mantle: A deep seismic refraction study
[1] A two‐dimensional model of the Brazilian central crust and upper mantle was obtained from the traveltime interpretation of deep seismic refraction data from the Porangatu and Cavalcante lines, each approximately 300 km long. When the lines were deployed, they overlapped by 50 km, forming an E‐W transect approximately 530 km long across the Tocantins Province and western São Francisco...
Authors
J.E. Soares, J. Berrocal, R.A. Fuck, Thomas Mooney, D.B.R. Ventura
Crustal structure of mainland China from deep seismic sounding data Crustal structure of mainland China from deep seismic sounding data
Since 1958, about ninety seismic refraction/wide angle reflection profiles, with a cumulative length of more than sixty thousand kilometers, have been completed in mainland China. We summarize the results in the form of (1) a new contour map of crustal thickness, (2) fourteen representative crustal seismic velocity–depth columns for various tectonic units, and, (3) a Pn velocity map. We...
Authors
S. Li, Walter D. Mooney, J. Fan
Recordings of the 2004 Parkfield earthquake on the General Earthquake Observation System array: Implications for earthquake precursors, fault rupture, and coseismic strain changes Recordings of the 2004 Parkfield earthquake on the General Earthquake Observation System array: Implications for earthquake precursors, fault rupture, and coseismic strain changes
The 2004 Parkfield earthquake generated a unique set of near-field, high-resolution colocated measurements of acceleration, volumetric strain, and velocity at 11 stations in the General Earthquake Observation System (geos) array. The recordings indicate no precursory strain or displacement was discernable at sensitivities of 10−11 strain and 5 × 10−8 m 25 sec prior to the earthquake at...
Authors
R. D. Borcherdt, M.J.S. Johnston, G. Glassmoyer, C. Dietel
Impacts of land subsidence caused by withdrawal of underground fluids in the United States Impacts of land subsidence caused by withdrawal of underground fluids in the United States
No abstract available.
Authors
Thomas L. Holzer, Devin L. Galloway
Map showing features and displacements of the Scenic Drive landslide, La Honda, California, during the period March 31-May 7, 2005 Map showing features and displacements of the Scenic Drive landslide, La Honda, California, during the period March 31-May 7, 2005
No abstract available.
Authors
Ray E. Wells, Michael J. Rymer, Carol S. Prentice, Karen L. Wheeler
Holocene fault scarps and shallow magnetic anomalies along the southern Whidbey Island fault zone near Woodinville, Washington Holocene fault scarps and shallow magnetic anomalies along the southern Whidbey Island fault zone near Woodinville, Washington
No abstract available.
Authors
Brian L. Sherrod, Richard J. Blakely, Craig Weaver, Harvey Kelsey, Elizabeth Barnett, Ray Wells
Blind comparisons of shear-wave velocities at closely-spaced sites in San Jose, California: Proceedings of a Workshop held at the US Geological Survey, Menlo Park, May 3, 2004 Blind comparisons of shear-wave velocities at closely-spaced sites in San Jose, California: Proceedings of a Workshop held at the US Geological Survey, Menlo Park, May 3, 2004
Shear-wave velocities within several hundred meters of Earth's surface are important in specifying earthquake ground motions for engineering design. Not only are the shearwave velocities used in classifying sites for use of modern building codes, but they are also used in site-specific studies of particularly significant structures. Many are the methods for estimating sub-surface shear...
Past and future earthquakes on the San Andreas Fault Past and future earthquakes on the San Andreas Fault
No abstract available.
Authors
Ray J. Weldon, Thomas E. Fumal, Glenn Biasi, Katherine M. Scharer
Erratum: Empirical evidence for acceleration-dependent amplification factors Erratum: Empirical evidence for acceleration-dependent amplification factors
Incorrect versions of Figures 5 and 6 containing normalization errors were accidentally published by Borcherdt (2002). They should be replaced with the figures shown here. The text and tabulated regression values published in Borcherdt (2002) are correct and refer to the figures shown here.
Authors
Roger D. Borcherdt