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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
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)
1994 Northridge Earthquake
CSUN Parking Structure
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.
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.
CONTENT
Week 1 Week 2 Week 3
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).
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.
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.
WEEK 3
Student Research Project: GPS data modeling for the 1994 Northridge earthquake using MATLAB and DISLOC.
Student Presentations JPL tour
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.
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
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