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Real-time, in-class seismic wave demonstrations using laptops Michael Wysession

Real-time, in-class seismic wave demonstrations using laptops Michael Wysession Washington University St. Louis, MO. Real-time, in-class seismic wave demonstrations using laptops For Mac laptops, go to: http://www.suitable.com/tools/seismac.html

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Real-time, in-class seismic wave demonstrations using laptops Michael Wysession

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  1. Real-time, in-class seismic wave demonstrations using laptops Michael Wysession Washington University St. Louis, MO

  2. Real-time, in-class seismic wave demonstrations using laptops For Mac laptops, go to: http://www.suitable.com/tools/seismac.html For PC laptops and desktops, go to: http://qcn.stanford.edu/ For additional links, including seismometer lesson plans: http://www.iris.edu/hq/programs/education_and_outreachhttp://earthquake.usgs.gov/

  3. The Stanford Quake-Catcher Network (QCN):

  4. The QCN seismometer screen:

  5. Step 1: Identify the 3 components

  6. Step 1: Identify the 3 components

  7. Step 1: Identify the 3 components UP - DOWN LEFT - RIGHT FRONT - BACK

  8. Step 2: Figure Out What It Is Measuring

  9. Step 2: Figure Out What It Is Measuring

  10. Step 2: Figure Out What It Is Measuring • Motions are measured as accelerations, with units of “g” • It is an Accelerometer (like with car airbags) • Applications: Airplanes, Rollercoasters

  11. Step 2: Ask What Students Expect to Happen When the Laptop is Pushed

  12. Step 2: Ask What Students Expect to Happen When the Laptop is Pushed Probably get an answer something like this:

  13. That’s not what they expected!!

  14. Step 2: Ask What Students Expect to Happen When the Laptop is Pushed Probably get an answer something like this: Displacement

  15. Step 2: Ask What Students Expect to Happen When the Laptop is Pushed Probably get an answer something like this: Displacement How about Velocity?

  16. Step 2: Ask What Students Expect to Happen When the Laptop is Pushed Probably get an answer something like this: Displacement How about Velocity?

  17. Step 2: Ask What Students Expect to Happen When the Laptop is Pushed Probably get an answer something like this: Displacement How about Velocity? How about Acceleration?

  18. Step 2: Ask What Students Expect to Happen When the Laptop is Pushed Probably get an answer something like this: Displacement How about Velocity? How about Acceleration?

  19. Step 2: Ask What Students Expect to Happen When the Laptop is Pushed Probably get an answer something like this: Displacement How about Velocity? How about Acceleration? Yes, It really is Acceleration!

  20. That’s not what they expected!!

  21. Step 3: Have students try to replicate an actual 3-Component seismogram!

  22. Sample of Real 3-Component Seismogram:

  23. Sample 3-Component Seismac Seismogram:

  24. Opportunity to talk about some more complex aspects, like surface wave retrograde motion and dispersion, and mode splitting

  25. Step 4: Seismic Attenuation with Distance

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