Examination and evaluation of real-time oceanographic data on the internet
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and OCEAN BASINS |
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ATMOSPHERE DYNAMICS |
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Introduction to Questions on Earthquakes:
- Your answers to the following questions should reflect your individual efforts.
- Reminder: you should submit your answers via oncourse.
| Earthquakes and Plate Tectonics: Questions (contd.) | pt | |
| Earthquakes and Plate Boundaries | ||
| From the list of recent events (
http://gldss7.cr.usgs.gov/neis/bulletin/bulletin.html
) identify earthquakes that occur associated with specific types of plate
boundaries. (Alternatively examine the listing at: http://gldss7.cr.usgs.gov/neis/qed/qed.html , which includes earthquakes covering the past 30 days) Click on the location selected to view the map that indicates the site of the event and the position of plate boundaries as yellow lines. The characteristics of plate boundaries, whether divergent, convergent or transform, and a map of their global positions are described separately ( plates ). |
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| 8. | Select two events occurring on different divergent plate boundaries. (Give details of their dates, times, depths, magnitudes and locations.) HINT | 4 |
| 9. | Select two events occurring on different convergent boundaries where both plates are oceanic. (Give details of their dates, times, depths, magnitudes and locations.) HINT |
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| 10. | Select two events occurring on different convergent boundaries where one plate is oceanic and the other continental. (Give details of their dates, times, depths, magnitudes and locations.) HINT |
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| 11. | Select one event occurring at a convergent boundary where both plates are continental. (Give details of the date, time, depth, magnitude and location of the event.) HINT |
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| 12. | Select one event occurring at a transform plate boundary. (Give details of the date, time, depth, magnitude and location of the event.) HINT |
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| 13. | Select one event that does not occur at a plate boundary? (Give details of the date, time, depth, magnitude and location of the event.) HINT | 3 |
| Examine the world map of earthquakes with magnitudes >7:
http://gldss7.cr.usgs.gov/neis/eqlists/MAG7/mag7.html |
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| 14. | Are major earthquakes (magnitudes >7) similarly associated with all three types of plate boundary (convergent, divergent, tranform)? HINT | 3 |
| Deep Earthquakes | ||
| From the longer list of recent events ( http://gldss7.cr.usgs.gov/neis/qed/qed.html ) identify deep (>100km) earthquakes and assess their plate boundary settings. | ||
| 15. | Select four events from different regions that record deep (>100km) earthquakes. (Give details of their dates, times, depths, magnitudes and locations.) | 4 |
| 16. | Is there any correspondence between the locations of deep earthquakes (>100km) and their tectonic setting based on evidence from your answer to Q. 15? HINT |
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| Rexamine the world map of earthquakes with
magnitudes >7: http://gldss7.cr.usgs.gov/neis/eqlists/MAG7/mag7.html |
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| 17. | Is there any correspondence between the locations of intense earthquakes (magnitude >7) and their tectonic setting based on the positions of their occurrence on the world map? HINT |
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Department of Geological Sciences,
1001 E. Tenth Street, Bloomington, IN 47405-1403
Phone: (812) 855-5582 Last updated: 16 September 2002
Comments: simon@indiana.edu
Copyright 2002, The Trustees of Indiana University