1. NASA CSUN/JPL PAIR PROGRAM GLOBAL POSITIONING SYSTEM (GPS) THEORY, DATA ANALYSIS, & MODELING Dr. Gerry Simila Department of Geological Sciences Drs. C. Shubin & W. Horn Department of Mathematics

2. 1994 NORTHRIDGE EARTHQUAKE  Magnitude 6.7  Blind Thrust Fault (previously unknown)  40 cm Vertical Uplift (north of CSUN)  CSUN Damages = $350 million  Most Costly Natural Disaster ($20+ billion)  Catalyst for 250 GPS Network (SCIGN)

3. 1994 Northridge Earthquake

4. CSUN Parking Structure

5. OBJECTIVES  Students are introduced to the basic concepts of GPS, Plate Tectonics, and Earthquakes.  Students will use several software packages for data analysis: EXCEL, MATLAB, and JPL’s DISLOC & GPS/GIPSY programs.  Student’s will apply their knowledge to analyze and model GPS data for earthquake displacements.  Student’s learn about current GPS research project from guest speakers – lecture series.

6. COURSE FORMAT  Course format was 12 days in duration.  Class instruction/analysis was 6 hours/day.  Lecture in the morning and data analysis in the afternoon.  Computer program instruction in afternoon lab.

7. CONTENT  Week 1  Week 2  Week 3

8. WEEK 1  MORNING: 1) Plate Tectonics, Faulting, and Earthquakes 2) GPS Concepts (coordinate system, reference systems, lat. & long., map scales); 3) GPS Measurements and Time Series Analysis; 4) Introduction to Stress and Strain; 5) GPS and Northridge Earthquake; 6) Earthquakes, Faulting, and Earthquake Double Couple Mechanism and Seismic Moment; 7) Elastic Crack Fault Models of Okada/ DISLOC (C. Shubin).

9. WEEK 1  AFTERNOON: GPS Data Analysis (EXCEL); JPL/SCIGN web site Exercise; NASA Mission Mathematics (C. Shubin); Introduction to MATLAB; Stress/ Strain Analysis (EXCEL)  HOMEWORK: Mathematical exercises were assigned for content topics on GPS, earthquakes, stress, and strain.

10. WEEK 2  MORNINGS: MATLAB and Finite Element Modeling (W. Horn); Fault Modeling (DISLOC) and Tectonics; GPS Analysis and GIPSY (Dr. Ken Hurst, JPL).  AFTERNOONS: Software programs (MATLAB, GIPSY) operations.  HOMEWORK: GPS Analysis and Fault Modeling.

11. WEEK 3  Student Research Project: GPS data modeling for the 1994 Northridge earthquake using MATLAB and DISLOC.  Student Presentations  JPL tour

12. CHALLENGES  Course designed for science and math students with varied majors and background courses.  Synthesizing the content material for students.  Time schedule for content and student project.  Student enthusiasm for intensive course.

13. GPS COURSE IMPLEMENTATION  Part of GEOL 460 & 464 (Theoretical & Applied Geophysics)  Part of ES300 (Earth Science) Pre-service teachers  Proposed GEOL 595-GP Special Topics