Institute for Crustal Studies
2000-2001 Annual Report

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July 28, 2000

Silent earthquakes in Japan Islands and their implication for short term prediction by Professor Ichiro Kawasaki, Toyama University, Japan

July 31, 2000

Fault rotors, strong patches and average friction: suggestions from foam rubber modeling and field evidence by Jim Brune, University of Nevada, Reno

August 3, 2000

How do you stop an earthquake? By Ruth Harris, USGS

August 4, 2000

Effective friction law of an heterogeneous faults: some insights from numerical experiments of initiation of shear instability by Michel Campillo, Universite Joseph Fourier, France

August 7, 2000

Thrust fault modeling and observations by Jim Brune, University of Nevada, Reno

August 11, 2000

Physics of Normal faulting: Evidence from Physical Modeling and Precarious Rocks by Jim Brune, University of Nevada, Reno

August 30, 2000

A study of the distribution of heterogeneous stress along the fault surface by Valerie Vidal, visiting postdoctoral researcher from Grenoble, France

October 31, 2000

Dynamic Modeling of the 1992 Landers Earthquake by Jim Langer, University of California, Santa Barbara

December 7, 2000

Mapping Impulsive Dynamic Fracture onto Earthquake Faults by Stefan Nielsen, Universita degli Studi di Napoli, Itlay.

February 3, 2001

Calibrating rates of downstream fining in Himalayan rivers by Jerôme Lavé, CNRS, Grenoble, France.

February 6, 2001

Denudation rates in the Transverse Ranges as calibrated through landslides, sediment loads, fire history, and thermal chronology by Jerôme Lavé, CNRS, Grenoble, France

February 7, 2001

Use of rivers as active and passive geomorphic markers to calibrate deformation rates in the Himalayan orogen by Jerôme Lavé, CNRS, Grenoble, France

February 16, 2001

Seismic Safety of Yucca Mountain as a repository for high level radioactive waste by Jim Brune, University of Nevada, Reno

February 20, 2001

The Seismicity of the Northeastern U.S. : Old Questions and New Insights by John Ebel of Boston College.

May 17, 2001

Imaging lithospheric roots beneath young continental collision zones: the Transverse Ranges, CA and the Southern Alps, New Zealand by Monica Kohler, University of California, Los Angeles


Off Campus-Invited Lectures


"Xenoliths from the lower crust of Tibet," presented by Brad Hacker at the Boston University, Arizona State University, New Mexico State University, University of Texas, El Paso and Texas Tech University.


"Ultrahigh-pressure metamorphism," presented by Bradley Hacker at the Goldschmidt Conference of the Geochemical Society

"Why intermediate-depth earthquakes?," presented by Bradley Hacker at the Fall meeting of the American Geophysical Union.

"Rheology, buoyancy, seismicity, and H2O content of oceanic crust," presented by Brad Hacker at the Pennsylvania State University

"Intraslab earthquakes and dehydration," presented by Brad Hacker at the

Japan Marine Science & Technology Center (JAMSTEC).

"Intermediate-depth earthquakes and dehydration," presented by Brad Hacker at the USGS-University of Washington, Juan de Fuca Slab Earthquake Science and Hazards Appraisal Workshop.

"Intermediate-depth earthquakes and dehydration," presented by Brad Hacker at the MARGINS Central America Workshop, Costa Rica.

"Exhumation of Norwegian ultrahigh-pressure rocks," presented by Brad Hacker at the Ultrahigh-Pressure Workshop, Tokyo.

"Exhumation of Norwegian ultrahigh-pressure rocks," presented by Brad Hacker at the International Eclogite Conference, Niihama.

February 2001

"The Garner Valley Test Site," presented by Jamison H. Steidl for the new directions for the National Geotechnical Experimentation Site (NGES) program, funded by NSF Engineering Civil and Mechanical Systems, Colorado School of Mines, Golden, Colorado.

March 2001

"Borehole pore pressure and ground motion instrumentation," presented by Jamison H. Steidl at the International Workshop on Borehole instrumentation and Near-source seismology, Tsukuba, Japan, NSF funded.

April 9, 2001

"3D visualization of the Santa Barbara Channel Faults" by M. Kamerling, C. Sorlein, R.J. Archuleta was presented to the GSA-AAPG joint meeting in Univesral City, California.

April 2001

"Strike Slip faults,." presented by Arthur Sylvester at the University of Norway in Svalbard.

April 2001

"Strike Slip faults," presented by Arthur Sylvester at the University of Iceland.

April 2001

"Understanding strong motion: An iterative approach," presented by Jamison H. Steidl at the U.S. Geological Survey, Earthquake Hazards Team Seminar Series, Menlo Park, California. June 2001

"SCEC Borehole Initiative and Ground Motion Modeling," presented by Jamison H. Steidl at the U.S. Geological Survey, FOQUS-LA Planning Workshop, Menlo Park, California.

June 2001

"SCEC Borehole Instrumentation Program," presented by Jamison H. Steidl at the sixth annual CalTrans Sismic Research Workshop, Sacramento, California

June 27, 2001

"Calibrating rates of erosion at the catchment to orogen scale," key note address by Doug Burbank at the joint Geological Society of America-Geological Society of London "Earth System Processes" meeting in Edinburgh.


Outside Advisory/Planning Committees

Burbank worked extensively this year developing the 20-year NASA plan for the Solid Earth Sciences and Natural Hazards (initial presentations at Spring 2001 AGU in Boston) and convened a workshop on the GEO-PBO (the geologic component of the Plate Boundary Observatory, one of four parts of the Earthscope initiative).



November 16, 2000 SCEC/ROSRINE Workshop on Borehole Array Data Utilization. Palm Springs, CA

Organized by Dr. Steidl

July 17-18 KECK Symposium held at UCSB

Deformation and Dissipation Mechanisms at Sticking and Slipping Interfaces

Febraury 1-4 Nepal workshop held at UCSB

Interaction of tectonics, erosion, and climate along a transect from Tibet to the Himalayan foreland.


Research Experience for Graduates

Twenty-one graduate students are involved in research administered through ICS. These students are involved in field research both locally and internationally. Many have presented their research with talks or posters at professional meetings: e.g., American Geophysical Union, Geological Society of America, Seismological Society of America, annual Southern California Earthquake Center. In addition to the abstracts presented, ICS graduate students are also involved as co-authors on articles in referred journals.

Beth Pratt is using cosmogenic nuclide exposure-age dating to reconstruct the record of river incision in the central Himalaya. She has discovered that, despite the sustained bedrock incision by rivers over the past 100,000 years, there are major pulses of sedimentation that inundate the river valleys with sediment and create massive river terraces. These aggradational episodes appear to be driven by increases in the strength of the Asian monsoon.

Amber Johnstone spent June and July, 2001, in central Nepal attempting to calibrate the changes in water and sediment fluxes that are driven by the summer monsoon. Along with grad student Manny Gabet, she developed routines for sediment and water sampling, trained Nepalese assistants in data collection procedures, and hiked up to >18,000 feet!

Kurt Knipmeyer is working the behavior and properties of sheared concentrated suspensions of hard-sphere particles in a Newtonian fluid. The flow properties of systems near the concentration at which viscosity diverges will be investigated with a specific focus on the phenomenon of jamming.

Anthony Foglia is working on a project in which he will use a new "rate-and-state" theory of plastic deformation to study seismic wave propagation through compacted soils. This new theory has been developed over the last several years by Langer and coworkers for the study of deformation and fracture in amorphous solids.

David Root is working with Brad Hacker on the "Exhumation of ultrahigh-pressure rocks in the Scandinavian Caledonides" and "Phase transformations and their effects on the thermal, petrological, and seismological structure of subducting oceanic lithosphere."

Laura Rademacher has focused her graduate studies on important questions in aqueous geochemistry: the chemical evolution of shallow groundwater and quantification of chemical weathering rates along different hydrologic pathways in catchments. With her field-based result, she hopes to gain better insights into the physical and chemical mechanisms of weathering. This is an important topic because weathering rates are fundamental in determining acid deposition neutralization and affect many global geochemical cycles including carbon dioxide. The initial results of her research were recently published in a special issue of Chemical Geology. This paper presents a new method of determining the chemical evolution of groundwater in a forested catchment using springs. It builds on the classic weathering study of Garrels and Mackenzie (1967) that is found in most aqueous geochemistry text books by providing a chronology for the chemical changes and thus allowing weathering rates to be calculated.

Fabia Terra worked on a project supported on "atmospheric excitation of earth's oscillaitons". She examined barometer data which provide the basic information of atmospheric forcing on the solid earth.


Research Experience for Undergraduates

SCEC sponsored summer internships for two undergraduates: Marie C. Ammerman and Tracy Pattelena under the mentorship of Drs. Archuleta and Olsen, respectively. Each produced reports and presented their results at the SCEC annual meeting. Marie Ammerman’s project entitled; "Inconclusive Evidence for Fault Zone Trapped Waves on the Bullion Fault" included analyzing data from aftershocks recorded by stations in the Bullion Wash Array. Tracy Pattelena studied the "Refinement of Near-Surface P and S Wave Velocities in the SCEC 3-D Velocity Model Using 3-D Wave form Modeling". Tracy Pattelena’s research focused on the ground motion in a portion of the San Fernando Valley (SFV) where control on the near-surface S wave velocity, a critical parameter for accurate prediction of strong ground motion, is mostly indirect and in many areas not well constrained.

This year undergraduates had the unique opportunity of participating in both Active and Passive Stages of LARSE II experiment, which took place in September, and October of 1999. The occurrence of the October of 1999 Hector Mines Bullion Wash Earthquake provided hands on experience in field deployment after an actual earthquake. One example was the challenge of gaining access to earthquake sites, setting up and maintaining the site according to the guidelines of the site owners without the benefit of months or years or preparation.

Carrie Glavich and Jon Schuller presented a poster at the SCEC 2000 Annual Meeting. The poster represented a summary of activities for 2000/2001 of the Portable Broadband Instrument Center (PBIC) located at UCSB/ICS. The PBIC has completed the basic timing corrections and preliminary event associations of the Hector Mines data. Further processing steps are underway and new data sets will be available. This preliminary data set is available via the web at The Santa Barbara Array has nine operational stations.


Public Service Activities

The Press

July 10, 2000

Marc Kamerling and Craig Nicholson were featured on the cover of the Santa Barbara Newspress for an article entitled "Rules faulted for gap in quake data-Seismology: Scientist say government feud is hindering study of offshore faults."

January 17, 2001

Kim Olsen's work on amplification of ground shaking during earthquakes was featured in articles ("New map shows seismic hot spots") published on January 17, 2001 (the 7th anniversary of the Northridge earthquake) in the Los Angeles Times, The San Fernando Valley Daily News, the Pasadena Star News and several Orange County papers.

January 23, 2001

Professor Ralph J. Archuleta’s "Early detection theory unreliable for quake warning", was submitted as a response to an editorial that appeared in the Santa Barbara Newspress on 12/26/00 entitled "Southern California needs a 10-county quake alert district".

April 9, 2001

Marc Kamerling was interviewed by KEYT regarding his abstract presentation, "3D visualization of the Santa Barbara Channel Faults" by M. Kamerling, C. Sorlein, R.J. Archuleta to GSA-AAPG meeting of April 9, 2001.


July 31, 2000

The Institute for Crustal Studies’ web site has been included in a book title, "Finding Homework Help on the Internet". Published by Scholastic in 2000. The book is targeted for children in grades 4 and up and will be distributed by Scholastic’s school book clubs.

October 11, 2000

Seismological set-up used for earth sciences presentation at La Colina Junior High School for five seventh grade science class of Peggy Lubchenko’s.

November 29, 2000

Seismological set-up used for earth sciences presentation at Marymount Elementary School for Sheila Wiley’s fifth grade science class.

November 30, 2000

Seismological set-up for meeting with Santa Barbara School District sixth grade teachers. The purpose of the meeting was to promote outreach services to teachers who would be teaching earth sciences for the first time.


The Public

November 4, 2000

Daniel Lavallee led a tour and talk about the Institute and the research it conducts for Parent’s and Family Weekend 2000.

May, 2001

For Staff Celebration Week we provided tours of the Institute, a demonstration of various instruments used by researchers and a worldwide web tour. The presentations lasted one hour and were conducted by Aaron Martin, Craig Nicholson, Elizabeth Cochran and Carrie Glavich

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