2009 Portland GSA Annual Meeting (18-21 October 2009)

Paper No. 18
Presentation Time: 9:00 AM-6:00 PM


FOUTZ, Anna M., Earth Science and Geology, Chaffey College, 5885 Haven Ave., Rancho Cucamonga, CA 91737, DONOHUE, Jennifer, Science Department, San Gorgonio High School, 2299 Pacific St, San Bernardino, CA 92404, JIRSA, Linda, Science Department, Arlington High School, 2951 Jackson St, Riverside, CA 92503, KLINE, Mark, Science Department, Banning High School, 100 W Westward Ave, Banning, CA 92220, PITTS, Patricia, Science Department, Citrus Valley High School, 800 West Pioneer Avenue, Redlands, CA 92374, WALLACE, Seth, Science Department, Bloomington High School, 10750 Laurel Ave, Bloomington, CA 92316, WILLIAMS, Jeni, Science Department, Patriot High School, 4355 Camino Real, Riverside, CA 92509, MCGILL, Sally, Geological Sciences, California State University, San Bernardino, 5500 University Parkway, San Bernardino, CA 92407, SPINLER, Joshua, Geosciences, University of Arizona, 1040 E. 4th Street, Tucson, AZ 85721, DEGROOT, Robert, Southern California Earthquake Center, University of Southern California, 3651 Trousdale Parkway, Los Angeles, CA 90089 and BENNETT, Richard A., Department of Geosciences, University of Arizona, Gould-Simpson Building #77, 1040 East 4th St, Tucson, AZ 85721, anna.foutz@sbcglobal.net

This EarthScope-funded research project is a collaboration between secondary educators, high school students, and undergraduate and graduate students and faculty at the California State University, San Bernardino and University of Arizona. As high school educators and their students work along-side one another, they are exposed to and contribute to an authentic research process that will lead to publishable results. The scientific goal of this project was to measure plate tectonic movement within the San Bernardino mountain area and the Inland Empire, southern California, utilizing the Global Positioning System (GPS). Teachers and students collected survey-mode GPS data from 22 sites during a 5-day campaign from June 26 - 30, 2009. The data are currently being processed at the University of Arizona using GAMIT-GLOBK. The results that will be presented include GPS data collected by the CSUSB group from 2002-2008 with NSF and SCEC funding, along with older GPS measurements for some sites from the SCEC data center. We used one-dimensional elastic modeling to infer the slip rates of the faults that make up the North America-Pacific plate boundary in proximity to the San Bernardino Mountains. The GPS velocities are well fit by a San Andreas fault slip rate anywhere between 5 and 13 mm/yr, with a best-estimate of 10 mm/yr. The information obtained may be useful for understanding and characterizing seismic hazards in this part of Southern California.