NOTES
Links to summaries of key issues for each topic
VISUALS
Links to images employed in lectures on a topic-by-topic basis
TEXT
Link to chapter outlines at online learning center at McGraw Hill.
NOTES
Links to summaries of key issues for each topic
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Tsunami, Seiches and Tides
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Notes on Topic:
The notes represent summaries
of key issues for each topic
They emphasize the terminology used to
describe the various phenomena.
| 1. Tsunami and Standing Waves: |
| Learning Objectives: |
- Appreciation of causes, characteristics and occurrence of tsunami
- Recognition of characteristics of standing waves in lakes
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| Tsunami: |
- Caused by submarine volcanic eruptions or earthquakes
- possess long periods (10 - 20 min)
- posses long wavelengths (100 - 200km)
- deep wave base
- move at 200m/s with speed limited by ocean depth
- create huge breakers when waves make landfall, leading to disasters
- warning system for tsunamis established in Pacific
- 7/12/93. Okushiri island, Hokkaido, 185 deaths.
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| Standing Waves: |
- Waves with stationary line or point: node (n)
- maximum variation in wave at antinodes
- period = time between successive antinodes at a given point
- oscillation or water pendulum
- occur in natural basins and lakes (seiches).
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Department of Geological Sciences,
1001 E. Tenth Street, Bloomington, IN 47405-1403
Phone: (812) 855-5582 Last updated: 7 December 2000
Comments: simon@indiana.edu
Copyright
2000, The Trustees of Indiana University
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