Institute for Crustal Studies
1998/99 Annual Report


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Other Projects and Activities


Seminars

UCSB

October 21, 1998

"On Accuracy and Precision" by Robert West.

November 4, 1998

"Estimation of Strong Ground Motion in the San Francisco Bay Area" by Eleanore Jewel, Ralph Archuleta and Kim B. Olsen.

December 17, 1998

"Apparent Nonlinear Effects of Seismic Wave Propagation in Heterogeneous Media" by Dan O'Connell.

January 20, 1999

"The Rupture and Slip Dynamics of Dipping Faults" by David Oglesby.

February 8, 1999

"Monitoring Seismicity in Kamachatka" by Anatoly Petukhin.

February 19, 1999

"Simulating Ground Motion for Subduction Earthquakes off the Mexican Coast" by Nikolai Chapiro.

March 17, 1999

"Comparison of Methods to Determine Gaseous Emissions to the Atmosphere Above Natural Marine Hydrocarbon Seeps" by Eric Egland.

March 19, 1999

"Nonlinear site response" by Bob Pyke.

May 19, 1999

"Mechanical Properties of Interplate Thrust Zones Revealed by Earthquake Rupture Processes" by Thorne Lay.

 

Off Campus — Invited Lectures

September 15, 1998

"Modeling Earthquake Rupture in a 3D Fault Model" by Kim Olsen. Presented at the University of Southern California, Los Angeles, CA.

October 1998

"Middle Miocene Shortening in Southern Tibet: III. Field and Structural Relations in the Kangmar Dome by Jeff Lee. Presented at the Geological Society of America Meeting, Toronto, Canada.

December 6, 1998

"Xenoliths from the North-Central Tibetan Plateau" by Bradley Hacker. Presented at the American Geophysical Union Meeting, San Francisco, CA.

December 6, 1998

"Structural Evolution of the Mabja Dome, Southern Tibet" by Jeff Lee. Presented at the American Geophysical Union Meeting, San Francisco, CA.

January 27, 1999

"Sequence Stratigraphy off the Northern Channel Islands, California: Stream

Capture and Thrust Earthquakes" by Chris Sorlien. Presented at Lamont-Doherty Earth Observatory, New York.

February 1999

"The Rise and Fall of Mountains: Simultaneous Contraction and Extension in Southern Tibet" by Jeff Lee. Presented at the Department of Geology, University of Vermont, Burlington, VT.

March 16, 1999

"The Decrease in Hydrocarbon Seepage Offshore Coal Oil Point, California, Associated With Oil Production" by Bruce Luyendyk. Presented at the Coast Geological Society Meeting, Ventura, CA.

April 20, 1999

"Seismic Sources, Rates of Deformation, and Earthquake Hazards of the Santa Barbara Fold Belt, California" by Larry D. Gurrola. Presented at the Coast Geological Society Meeting, Ventura, CA.

May 3, 1999

"Nonlinear Site Response: From Laboratory Modeling to Field Data Modeling" by Fabian Bonilla. Presented at the Seismological Society of America Spring Meeting.

May 3, 1999

"Broadband Modeling of Nonlinear Soil Response for the 1994 Northridge, California Earthquake" by Kim Olsen. Presented at the Seismological Society of America Spring Meeting.

May 3, 1999

"Importance of Integral Parameters for Seismological and Engineering Studies" by Alexei Tumarkin. Presented at the Seismological Society of America Spring Meeting.

May 4, 1999

"Source Parameter Inversion Using 3D Green’s Functions: Application to the 1979 Coyote Lake, California Earthquake" by Ralph Archuleta. Presented at the Seismological Society of America Spring Meeting.

May 4, 1999

"Three-Dimensional Simulations of the Dynamics of Dipping Faults" by David Oglesby. Presented at the Seismological Society of America Spring Meeting.

May 4, 1999

"3D Rupture Dynamics with Kinematic Constraints: The 1992 Landers Earthquake" by Kim Olsen. Presented at the Seismological Society of America Spring Meeting.

May 4, 1999

"Tectonic Geodesy Involves Undergraduate UCSB Students in Meaningful Seismological Research" by Arthur Sylvester. Presented at the Seismological Society of America Spring Meeting.

May 1999

"The Rise and Fall of Mountains: Simultaneous Contraction and Extension in Southern Tibet" by Jeff Lee. Presented at the Department of Geological Sciences, New Mexico State University, Las Cruces, NM.


Workshops

April 18-20, 1999

Stratigraphic Correlations in the Cape Roberts area of the western Ross Sea, Antarctica. Location: UCSB, Institute for Crustal Studies. Participants included Bruce Luyendyk, Christopher Sorlien and Rhea Hamilton as well as researchers from Spain and New Zealand.


Research Experience for Graduates

Twenty-four 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.

Rob Meyer spent three months last winter in the Antarctic working on using apatite fission-track and paleomagnetic methods to determine the location of range-bounding faults in the southern and central Ford Ranges of Marie Byrd Land.

Molly Trecker received a Mildred E. Mathias Graduate Student Research Grant to collect shells on Santa Cruz Island for dating the marine terrace on the island. These dates will help in calculating rates of deformation on active faults and folds in the Santa Barbara and Ventura area.

Antonio Garcia received the1999 University of California, Santa Barbara departmental block grant awarded to conduct dissertation research and the 1999 Sigma Xi research grant to conduct fieldwork for his doctoral dissertation.

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."

 

Research Experience for Undergraduates

SCEC sponsored summer internships for three undergraduates: Javier Santillan, Leland Green and Lowell Kessel under the mentorship of Drs. Steidl, Nicholson and Sylvester, respectively. Each produced reports and presented their results at the SCEC annual meeting. Javier Santillan’s project entitled, "Understanding Ground Motion Variations at the Van Norman Dam Complex Site" included installing seismic instruments and collecting data. Javier used this data to compare it with the data received during the 1994 Northridge earthquake. Leland Green studied the "Development of an Interface for 3-D Visualization of SCEC Earthquake Data on the World Wide Web". Leland has developed an interface that will allow viewers of the SCEC web page to access earthquake data, control the viewing perspective of these data, and produce time based animation of the database. The interface was developed using Java based tools. This will allow the interface to be displayed on any web browser (e.g. Netscape, Microsoft Internet Explorer) that has the ability to display Java applets. "Folding and Faulting along the San Andreas Fault, Palmdale, California; Implications for simple shear mechanics and education of the public" was the title of Lowell Kessel’s project. Lowell spent last summer mapping a section of the San Andreas Fault to better understand the movement in this tectonically active area.

Senior Neil Morgan won the Chancellor's Award for Undergraduate Research this year! This award is made to one graduating senior campus-wide who has demonstrated superior independent research–a substantial achievement.

 

Public Service Activities

The Press

Nicholson was interviewed by television and newspaper reporters about an earthquake in Oxnard last winter. Archuleta has also given many interviews this year to the press about earthquake activity around the world.

Schools

David Oglesby gave a talk to the undergraduate science internship program here at UCSB on July 9, 1998.

Aaron Martin and David Oglesby did an outreach presentation at La Colina Jr. High on February 3, 1999. Also in attendance were Mike Watkins, Javier Santillan and Eleanor Jewel for training as future presenters.

Graduate student David Oglesby and Mike Watkins did an outreach presentation at Laguna Blanca School on February 24, 1999.

Researchers and students from ICS explained earthquakes and seismology to students and their parents at the Community Earth and Safety Day on April 10, 1999 at the Montecito School in Santa Barbara.

 

The Public

Archuleta gave one of four general education talks during UCSB Parent’s weekend: "Earthquakes in Southern California."

Carrie Glavich, Aaron Martin, Fabia Terra, Carey Marcinkovich, Karen Powers, Brad Cordova participated in the Santa Barbara Earth Day festival on Sunday, April 18.

Fabian Bonilla and Aaron Martin did a presentation for SCEC interns at Jamie Steidl's Van Norman Dam borehole site near Northridge, California on August 15, 1998. Fabian talked about reference sites and the benefits of borehole installations. Aaron presented a brief overview of modern digital seismic recorders.






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