CroninProjects.org/ Vince/ PhysGeoLab/EQsLab-F21.html

Seismograms from the M7 earthquake near the Loyalty Islands on November 19, 2017. Graphic from the IRIS Data Center (ds.iris.edu/spud/eventplot/14570840).



Earthquakes Lab


This document is subject to revision, so reload this page in your browser every time you visit so that you will be certain to view the most current content. Revised October 28, 2021.

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Important Notes

Lab Assignment

  1. View the video introducing the material in Chapter 11 of the AGI/NAGT Lab Manual at https://goo.gl/gMj34o.
  2. View the pronunciation guide for names and geoscience terms used in the Earthquakes Lab (chapter 11) of the AGI/NAGT Lab Manual: https://youtu.be/Ih7KuDhjwX4
  3. Read: AGI/NAGT Lab Manual, chapter 11, Section Introduction (the whole enchilada), Page 292
  4. Read: AGI/NAGT Lab Manual, chapter 11, Section Earthquakes and Seismic Waves and all of its subsections, Pages 293-294.
  5. OPTIONAL but Recommended: Take advantage of any of the following IRIS educational resources.
    1. IRIS animation, Building Resonance: Structural Stability During Earthquakes (5 min 31 sec.) https://www.iris.edu/hq/inclass/uploads/videos/A_005_buildingresonance.mp4
      More information about this video is available at https://www.iris.edu/hq/inclass/animation/building_resonance_the_resonant_frequency_of_different_seismic_waves
    2. IRIS animation, Buildings & Bedrock: Effects of Amplification & Liquifaction (1 min 12 sec.) https://www.iris.edu/hq/inclass/uploads/videos/A_4D_amplificliquefaction.mp4
      More information about this video is available at https://www.iris.edu/hq/inclass/animation/buildings__bedrock_effects_of_amplification__liquefaction
  6. Do: AGI/NAGT Lab Manual, chapter 11, Activity 11.1, Earthquake Hazards Inquiry, Parts C, D, and E ONLY, p. 300. If you get stuck, contact your Graduate Teaching Assistant (GTA) or Dr. Cronin and they'll try to help you get unstuck.
  7. Do: AGI/NAGT Lab Manual, chapter 11, Activity 11.2, How Seismic Waves Travel Through Earth, pages 301-302.
    IMPORTANT Notice!There is an error in the Lab Manual, in Activity 11.2, part E, page 302. The arrival times for the P and S waves are incorrect, and should be as follows:
    P wave arrival 11:12:36
    S wave arrival 11:17:06
    Ask for help when-or-if you need it!
  8. OPTIONAL but Recommended: Take advantage of any of the following IRIS educational resources.
  9. Read: AGI/NAGT Lab Manual, chapter 11, Section Interpreting Seismograms, Pages 294-296.
  10. OPTIONAL but Recommended: Take advantage of any of the following IRIS educational resources.
  11. Do: AGI/NAGT Lab Manual, chapter 11, Activity 11.3, Locate the Epicenter of an Earthquake, pages 303-305.
    Ask for help when-or-if you need it!
    You might choose to complete this exercise with the assistance of the following IRIS Web ap:
    Earthquake Triangulation : https://www.iris.edu/app/triangulation/
    More information about this Web ap is available via https://www.iris.edu/hq/inclass/software-web-app/earthquake_triangulation
    Direct access to ap: https://www.iris.edu/app/triangulation/
  12. View IRIS Animations
    Take 2: Epicenter vs Hypocenter (1 min 59 sec.) available at https://www.iris.edu/hq/inclass/uploads/videos/A_Take2_Epicenter_vs_Hypocenter.mp4
    More information about this video is available at https://www.iris.edu/hq/inclass/animation/take_2_epicenter_vs_hypocenter__
    Earthquake: Foreshock -- Mainshock -- Aftershock (6 min 32 sec.) available at https://www.iris.edu/hq/inclass/uploads/videos/A_004_ForeshockAftershock.mp4
    More information about this video is available at https://www.iris.edu/hq/inclass/animation/earthquake_foreshockmainshockaftershock
  13. OPTIONAL Play with the IRIS web app Seismic Monitor to see recent earthquakes plotted on global or regional maps, accessible via https://www.iris.edu/hq/inclass/software-web-app/seismic_monitor
    Direct access to app: http://ds.iris.edu/seismon/
  14. Read: Read: AGI/NAGT Lab Manual, chapter 10, Subsections Brittle Deformation and Types of Faults, Pages 272-274
    • View: IRIS animation Fault: Strike-slip (18 sec.) available at https://www.iris.edu/hq/inclass/uploads/videos/A_003strike-slipfault.mp4. More information about this video is available at https://www.iris.edu/hq/inclass/animation/fault_strikeslip
    • View: IRIS animation Fault: Strike-slip direction (left lateral and right lateral) (21 sec.) available at https://www.iris.edu/hq/inclass/uploads/videos/A_003_Strike-Slip_Left-Right.mp4. More information about this video is available at https://www.iris.edu/hq/inclass/animation/fault_strike_slip_direction_left_lateral_and_right_lateral
  15. Read: AGI/NAGT Lab Manual, chapter 11, section Focal Mechanism Analysis, pages 295-298.
  16. Do: AGI/NAGT Lab Manual, chapter 11, Activity 11.4, San Andreas Fault Analysis at Wallace Creek, pages 306-307.
    Ask for help when-or-if you need it!
  17. Do: AGI/NAGT Lab Manual, chapter 11, Activity 11.5, New Madrid Seismic Zone, page 308.
    Ask for help when-or-if you need it!
  18. OPTIONAL but Recommended: Take advantage of any of the following IRIS educational resources.
    1. IRIS animation, Magnitude Explained: Moment Magnitude vs. Richter Scale (5 min 39 sec.) https://www.iris.edu/hq/inclass/uploads/videos/A_004A_momentmagnitude.mp4
      More information about this video is available at https://www.iris.edu/hq/inclass/animation/magnitudes_moment_magnitude_explained
    2. IRIS animation, Magnitude Perspective: Graphical Comparison of Earthquake Energy Release (NOAA) (1 min 52 sec.) https://www.iris.edu/hq/inclass/animation/magnitude_graphical_comparison_of_earthquake_energy_release#videoPlayer2
      More information about this video is available at https://www.iris.edu/hq/inclass/animation/magnitude_graphical_comparison_of_earthquake_energy_release
    3. IRIS animation, Take 2: Magnitude vs. Intensity (1 min 55 sec.) https://www.iris.edu/hq/inclass/uploads/videos/A_Take2_Magnitude_vs_Intensity.mp4
      More information about this video is available at https://www.iris.edu/hq/inclass/animation/take_2_magnitude_vs_intensity
    4. IRIS animation, Alaska: The Great Alaska Earthquake of 1964 (6 min 42 sec.) https://www.iris.edu/hq/inclass/uploads/videos/A_007__alaska_1964.mp4
      More information about this video is available at https://www.iris.edu/hq/inclass/animation/alaska_the_great_alaska_earthquake_of_1964
    5. IRIS animation, Alaska: Tectonics and Earthquakes (8 min 39 sec.) https://www.iris.edu/hq/inclass/uploads/videos/A_007_alaskatectonics.mp4
      More information about this video is available at https://www.iris.edu/hq/inclass/animation/alaska_tectonics_and_earthquakes
    6. IRIS animation, Subduction Zone: Tsunamis Generated by Megathrust Earthquakes (5 min 43 sec.) https://www.iris.edu/hq/inclass/uploads/videos/A_2_megathrustearthquakes.mp4
      More information about this video is available at https://www.iris.edu/hq/inclass/animation/subduction_zone_tsunamis_generated_by_megathrust_earthquakes
    7. IRIS animation, Mexico: Earthquakes & Tectonics (7 min 46 sec.) https://www.iris.edu/hq/inclass/uploads/videos/A_007_Mexico1984.mp4
      More information about this video is available at https://www.iris.edu/hq/inclass/animation/mexico_earthquakes__tectonics
    8. IRIS animation, Central America--Earthquakes and Tectonics (9 min 28 sec.) https://www.iris.edu/hq/inclass/uploads/videos/A_007_centralAmerica.mp4
      More information about this video is available at https://www.iris.edu/hq/inclass/animation/central_americaearthquakes_and_tectonjics
    9. IRIS animation, Japan's Earthquakes & Tectonic Setting (10 min 03 sec.) https://www.iris.edu/hq/inclass/uploads/videos/A_007_Japan_regional.mp4
      More information about this video is available at https://www.iris.edu/hq/inclass/animation/japans_earthquakes__tectonic_setting
    10. IRIS Web app: Seismic Monitor for seeing recent earthquakes plotted on global or regional maps https://www.iris.edu/hq/inclass/software-web-app/seismic_monitor
      Direct access to ap: http://ds.iris.edu/seismon/
    11. IRIS Web app: IRIS Earthquake Browser, an interactive map for viewing many earthquake epicenters (or hypocenters in the 3D mode) simultaneously https://www.iris.edu/hq/inclass/software-web-app/iris_earthquake_browser
      Video introduction https://youtu.be/jlOMdHN_jVA
      Direct access to web ap: https://www.iris.edu/ieb/
    12. IRIS animation, Take 2: Can Earthquakes Be Predicted (Part 1) (1 min 41 sec.) https://www.iris.edu/hq/inclass/uploads/videos/A_Take2_Prediction1_FortuneTeller.mp4
      More information about this video is available at https://www.iris.edu/hq/inclass/animation/take_2__can_earthquakes_be_predicted_part_1
    13. IRIS animation, Take 2: Can Earthquakes be predicted? (Part 2) (1 min 38 sec.) https://www.iris.edu/hq/inclass/uploads/videos/A_Take2_Prediction2_HeartAttack.mp4
      More information about this video is available at https://www.iris.edu/hq/inclass/animation/take_2_can_earthquakes_be_predicted_part_2
    14. IRIS animation, Take 2: Seismic Hazard vs. Seismic Risk (1 min 57 sec.) https://www.iris.edu/hq/inclass/uploads/videos/A_Take2_Hazard_vs_Risk.mp4
      More information about this video is available at https://www.iris.edu/hq/inclass/animation/take_2_hazard_vs_risk
    15. IRIS animation, Pacific Northwest vs. Japan: Mirror-Image Subduction Settings? (4 min 12 sec.) https://www.iris.edu/hq/inclass/uploads/videos/A_007_gpspacificnwvsjapan.mp4
      More information about this video is available at https://www.iris.edu/hq/inclass/animation/pacific_northwest_vs_japan_similar_tectonic_settings
    16. IRIS animation, GPS as an Essential Component of Cascadia Earthquake Early Warning (6 min 55 sec.) https://www.iris.edu/hq/inclass/uploads/videos/A_004_eewpacificnw.mp4
      More information about this video is available at https://www.iris.edu/hq/inclass/animation/earthquake_early_warning_pacific_northwest_subduction_zone


    Summary of Assigned Lab Activities for This Week: Activities 11.1 (parts C, D, and E ONLY), 11.2, 11.3, 11.4, and 11.5



    Required Textbook And Online Resources

    AGI/NAGT Laboratory Manual in Physical Geology, 12th edition (paper copy) Print Lab Manual ISBN: 9780135836972

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    Contacting Your Teachers

    How To Contact Professor Cronin

    Professor Cronin is available to facilitate understanding of course material that you have been studying and to help you navigate around any temporary barriers to your learning.

    email: Vince_Cronin@baylor.edu

    mobile, for text or voice: listed on the "lecture"-course homepage on Canvas.
    Only contact him on his mobile device between 8 AM and 8 PM Central Time, and only if it is an important question/issue related to this course.

    How To Contact Your Graduate Teaching Assistant



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