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 | pt | |
| Recent Earthquakes | ||
| Examine the listing of recent major earthquakes:
http://gldss7.cr.usgs.gov/neis/bulletin/bulletin.html In answering several of these questions you need to provide the date, time and location (place name) of the earthquake. |
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| 1. | What are the depths of the shallowest and deepest earthquakes from the
list? (Give details of their dates, times and locations) |
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| 2. | What are the magnitudes of the weakest and strongest earthquakes from the list? (Give details of their dates, times and locations) |
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| Earthquake Magnitude | ||
| 3. | Based on the listing of recent earthquakes does there appear to be any correspondence between an earthquake depth and magnitude? HINT | 1 |
| Examine the world map depicting the magnitude and depth of
recent earthquakes: http://gldss7.cr.usgs.gov/neis/weekly/weekly_locations.html |
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| 4. | How does the information from the map help to understand whether the depth and magnitude of earthquakes are related or not? HINT |
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| The principal factors that control the
magnitude of an earthquake are discussed here: http://wwwneic.cr.usgs.gov/neis/general/handouts/measure.html |
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| 5. | The magnitude of an earthquake reflects its energy. How much more energy is involved in an earthquake of magnitude 6 compared to one of magnitude 5? HINT |
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| Consider the global number of earthquakes of magnitude >7 for each year in the last century: http://gldss7.cr.usgs.gov/neis/eqlists/7up.html | ||
| 6. | Is there any uniformity in the annual frequency of earthquakes? (Bonus) HINT |
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| 7. | Why is this information relevant to the challenge of predicting earthquakes? (Bonus) HINT | 2* |
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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