CroninProjects.org/ Vince/ Course/ PhysGeol/Geo1405-EQs-F20.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

This page is revised frequently throughout the semester. Reload this page in your browser every time you visit this page to be certain that you are reading the most current course information

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  1. Read: the study questions for this section, listed at https://croninprojects.org/Vince/Course/PhysGeol/Geo1405-Earthquake-Q2020.html and keep them in mind as you read the following assignments. Most, if not all, of the answers will be in the reading assignments for this topic.
  2. Scan: Earth eText, chapter 11 — the whole burrito.
    A reminder about how to get to the eText is provided HERE
    Don't neglect to view all of the AV stuff: videos, animations, tutorials, concept checkers. Do these things in light of the study questions, so that you pick-up some information and know where to look for more information as you work to find the answers to those questions and understand the associated content.
  3. View the video introducing the material in Chapter 11 of the AGI/NAGT Lab Manual at https://goo.gl/gMj34o.
  4. 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
  5. Read: AGI/NAGT Lab Manual, chapter 11, Section Introduction (the whole enchilada), Page 292
  6. Read: Earth eText, chapter 11, Section 11.2, Seismology: The Study of Seismic Waves and all of its subsections
  7. Read: AGI/NAGT Lab Manual, chapter 11, Section Earthquakes and Seismic Waves and all of its subsections, Pages 293-294.
  8. Read: Earth eText, chapter 11, Section 11.5, Subsection Amplification of Seismic Waves and Liquefaction with accompanying figure 11.24
  9. 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
  10. 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. Submit a PDF of your completed activity sheet to the Earthquakes assignment in Canvas — submission instructions HERE.
  11. 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
    If you get stuck, contact your Graduate Teaching Assistant (GTA) or Dr. Cronin and they'll try to help you get unstuck. Submit a PDF of your completed activity sheet to the Earthquakes assignment in Canvas — submission instructions HERE.
  12. OPTIONAL but Recommended: Take advantage of any of the following IRIS educational resources.
  13. Read: AGI/NAGT Lab Manual, chapter 11, Section Interpreting Seismograms, Pages 294-296.
  14. OPTIONAL but Recommended: Take advantage of any of the following IRIS educational resources.
  15. Do: AGI/NAGT Lab Manual, chapter 11, Activity 11.3, Locate the Epicenter of an Earthquake, pages 303-305.
    If you get stuck, contact your Graduate Teaching Assistant (GTA) or Dr. Cronin and they'll try to help you get unstuck. Submit a PDF of your completed activity sheet to the Earthquakes assignment in Canvas — submission instructions HERE.
    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/
  16. Read: Earth eText, chapter 11, Section 11.1
    • View: the Tutorial Video Smart Figures: Faults cause earthquakes available at https://goo.gl/7Bx2jN
  17. 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
  18. 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/
  19. 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
  20. Read: AGI/NAGT Lab Manual, chapter 11, section Focal Mechanism Analysis, pages 295-298.
  21. Do: AGI/NAGT Lab Manual, chapter 11, Activity 11.4, San Andreas Fault Analysis at Wallace Creek, pages 306-307.
    If you get stuck, contact your Graduate Teaching Assistant (GTA) or Dr. Cronin and they'll try to help you get unstuck. Submit a PDF of your completed activity sheet to the Earthquakes assignment in Canvas — submission instructions HERE.
  22. Do: AGI/NAGT Lab Manual, chapter 11, Activity 11.5, New Madrid Seismic Zone, page 308.
    If you get stuck, contact your Graduate Teaching Assistant (GTA) or Dr. Cronin and they'll try to help you get unstuck. Submit a PDF of your completed activity sheet to the Earthquakes assignment in Canvas — submission instructions HERE.
  23. Take one last pass through Sections 11.4 through 11.7 in Chapter 11 of the Earth eText, reading with the study questions in mind.
    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


    Mastering Geology Reminder

    Complete the Dyamic Study Module called Earthquakes and then complete HW11 (online homework for chapter 11) by going to Mastering Geology through the Canvas Learning Management System (LMS).


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