| Date / Place |
Speaker |
Topic / Related Papers |
Thu, Aug 31, 2006
4pm, 141 McCone Hall |
Mark Wenzel
UC Berkeley |
Layered mantle convection on Mars timetable |
Thu, Sep 7, 2006
4pm, 141 McCone Hall |
Ingrid Johanson
UC Berkeley |
Transitioning: What the 2004 Parkfield earthquake reveals about a unique fault regime timetable |
Thu, Sep 14, 2006
4pm, 141 McCone Hall |
Gene Humphreys
U. Oregon |
North America dynamics and western U.S. tectonics timetable |
Thu, Sep 21, 2006
4pm, 141 McCone Hall |
James Berryman
JGBerryman@lbl.gov
LBNL |
Geomechanics of Fractured Reservoirs Related Papers:
- Geomechanical analysis with rigorous error estimates for a double-porosity reservoir model - Most rocks in the crust are fractured, and both their fluid flow characteristics and their geomechanical behavior are strongly affected by the fractures. A semi-analytical model for random polycrystals of porous laminates has been developed that permits detailed calculations of both geomechanical and transport coefficients
for model reservoirs. This approach enables the use of rigorous error estimates of the Voigt, Reuss, and Hashin-Shtrikman types. In related efforts, recent numerical experiments (by V. Grechka of Shell) on fractured systems having moderately high densities of flat cracks can be used to test the validity of these methods. The resulting comparisons provide some surprising insights into both models of this type and the expected behavior of fractured reservoirs.timetable |
Thu, Sep 28, 2006
4pm, Sibley Auditorium |
Kerry Emanuel
joint BASC |
Hurricanes and Global Warming Related Papers:
- Emanuel, K: Hurricanes: Tempests in a greenhouse, Physics Today, 59(8):74-75, August 2006 - Emanuel K: Increasing destructive of tropical cyclones over the past 30 years. Nature 436: 686-688, August 4 2006timetable |
Thu, Oct 5, 2006
4pm, 141 McCone Hall |
Rosemary Knight
rknight@pangea.stanford.edu
Stanford |
Near-Surface Geophysics: Electromagnetic Experiments in the Laboratory and Into the Field Related Papers:
- The near-surface of Earth (the top ~100 m) is the region that supports human infrastructure, provides water and mineral resources, and is the interface between solid and liquid Earth for many of the biogeochemical cycles that sustain life. The area of research that develops and applies geophysical methods to study this region of Earth is referred to as near-surface geophysics. The focus of our research is the sensitivity of the electromagnetic properties of Earth materials to the presence of fluids, and to the material properties that govern their movement. Laboratory studies of the dielectric constant, electrical conductivity, and proton-NMR response of rocks and soils are providing a growing understanding of the link between geophysical properties, all of which can be measured remotely, and material properties such as water content, salinity, clay content, surface area, and permeability. In the laboratory, the relationships between the geophysical properties and material properties are not simple. Extending these relationships to field-scale studies is one of the key challenges impeding progress in near-surface geophysics and requires exploring new ways of acquiring, inverting, and transforming field data. - Moysey S. and R.J. Knight, Modeling the field-scale relationship between dielectric constant and water content in heterogeneous systems, Water Resources Research, 40, DOI 10.1029/2003WRR002589, 2004.- Knight, R.J., Ground penetrating radar for environmental applications, Annu. Rev. Earth Planet. Sci., 29, 229-55, 2001. Copyright held by Annual Reviews.timetable |
Thu, Oct 12, 2006
4pm, 141 McCone Hall |
Qingzhu Yin
UC Davis |
The window through the extinct radioactivities in the early Solar System: before and after 4567 Ma timetable |
Thu, Oct 19, 2006
4pm, 141 McCone Hall |
Jody Bourgeois
U. Washington |
Does Kamchatka belong to North America? Insights from neotectonics and tsunami studies. Related Papers:
- Pedoja, K., Bourgeois, J., Pinegina, T., Higman, B.: Does Kamchatka belong to North America? An extruding Okhotsk block suggested by coastal neotectonics of the Ozernoi Peninsula, Kamchatka, Russia. Geology; May 2006; v.34; no. 5; p. 353-356 - Bourgeois, J., Pinegina, T., Ponomareva, V., Zaretskaia, N.: Holocene tsunamis in the southwestern Bering Sea, Russian Far East, and their tectonic implications. GSA Bulletin; March/April 2006; v. 118; no. 3/4; p. 449-463timetable |
Thu, Oct 26, 2006
4pm, 141 McCone Hall |
Yehuda Ben-Zion
benzion@usc.edu
USC |
Earthquake Dynamics and Fault Zone Damage Related Papers:
- For the class (I) studies - For the class (II) studies-
I review results on earthquake dynamics and rock damage associated with (I) regional lithospheric model for coupled evolution of earthquakes and faults, and (II) dynamic rupture on a bimaterial interface. Class (I) studies employ 3D quasi-static calculations with a thermodynamically-based continuum damage framework that accounts for evolving geometrical and material properties of faults (e.g., Lyakhovsky et al., JGR 97; Ben-Zion and Lyakhovsky, GJI 06). Class (II) studies use 2D dynamic calculations in a model with a single planar frictional fault and Coulomb plastic yielding off the fault (e.g., Andrews, JGR 05; Ben-Zion and Shi, EPSL 05).timetable |
Thu, Nov 2, 2006
4pm, 141 McCone Hall |
Goran Ekstrom
Columbia University |
Greenland's Glacial Earthquakes Related Papers:
- Ekstrom, G., M. Nettles, and V.C. Tsai, Seasonality and Increasing
Frequency of Greenland Glacial Earthquakes, Science, 311, 1756-1758, 2006 timetable |
Thu, Nov 9, 2006
4pm, 141 McCone Hall |
Frank Pazzaglia
fjp3@lehigh.edu
Lehigh University |
The geomorphic and geologic evidence for active tectonics in the Northern Apennines: Revision of geodynamic models for Mediterranean subduction. timetable |
Thu, Nov 16, 2006
4pm, 141 McCone Hall |
Larissa Dobrzhinetskaya
UC Riverside |
Microdiamonds from UHPM Terranes: Evidence of Deep Subduction of Continental Material timetable |
Thu, Nov 30, 2006
4pm, 141 McCone Hall |
Tom Dunne
UC Santa Barbara |
Sediment budget for the Andes-Amazon sediment dispersal system timetable |
Thu, Dec 7, 2006
4pm, 141 McCone Hall |
Lis Green
UC Berkeley |
The influence of geochemical and microbiological weathering on hillslope erosion and landscape evolution timetable |