PBO station P150 on Martis Peak, California

Plate Boundary Observatory Site P150 on Martis Peak, California. Data from this site are available via UNAVCO. Photo by Vince Cronin.

Documents for the GETSI workshop at AGU, 2017

Website for this GETSI module

GPS, Strain, and Earthquakes

NOTE that the most current module materials can be downloaded via the link provided above. Some of the files linked below were derived from this resource set on or about 8 December 2017.

Files used in (or prepared for) the workshop presentation

  1. Thoughts on the genesis of this project: 1.GettingStarted.pptx (5.8 MB PowerPoint file)
  2. The downloadable file "offline_content_module_live4036" containing this module's documents, accessible via (193.4 MB folder)
  3. Brief intro to GPS: 3.intro-gps-unit3resources-excerpt.pptx (24.5 MB PowerPoint file)
  4. The affective domain in unit 1: 4.Tohoku.pptx (2.1 MB PowerPoint file)
  5. Video comparing GPS responses to Tohoku, Japan, earthquake and the anticipated M9 earthquake in Cascadia: 5.Japan-vs-PacificNW_What-can-GPS-tell-us.mp4 (10.7 MB mp4 file)
  6. Video discussing earthquake early warning systems in Japan (Tohoku earthquake) and Cascadia: 6.GPSEarthquakeEarlyWarning.mp4 (22.4 MB mp4 file)
  7. Getting velocity information for PBO GPS sites: 7.SAF-PBO-GPS-Velocities.key (35.3 MB Keynote file)
  8. Using GPO velocities to determine crustal strain, part 1: 8.Strain.key (1.6 MB Keynote file)
  9. Illustration of deformed triangles relevant to GPS triangle-strain analysis: 9.gps_triangle_strain_ellipse.docx (1.6 MB MS Word file)
  10. Using GPO velocities to determine crustal strain, part 2: 10.GPSstrainIntro-Oct2017.ppt (7.8 MB PowerPoint file)
  11. Using GPO velocities to determine crustal strain, part 3: 11.gps_inf_str_anal-unit4.pptx (2.8 MB PowerPoint file)
  12. Data and worksheet for P395-P396-P406: 12.P395-396-406-data.key (15.9 MB Keynote file)
  13. The GPS triangle strain calculator implemented in Excel: 13.gps_strain_calculator_excel.v3.xls (56 KB MS Excel file)
  14. Results of the P395-396-406 strain analysis: 14.P395-396-406-analysis.key (56.2 MB Keynote file)
  15. Mathematica computable document format (cdf) code allowing visualization of the strain ellipse, given maximum (e1h) and minimum (e2h) horizontal extensions and the azimuth of the major axis of the strain ellipse (direction of e1h): 15.StrainEllipseVisualization.cdf> (411 MB cdf file)
  16. Student project involving extensional, contractional, and strike-slip settings: 16.unit_4_velocity_field.v2.pptx (3.4 MB PowerPoint file)

Other resources