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Tsunamis Defined

Definition
Tsunamis are defined as extremely large ocean waves triggered by underwater earthquakes, volcanic activities or landslides.

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The word tsunami was coined from the Japanese word "津波", translating to "harbor wave" in English. Tsunamis are sometimes referred to as "tidal waves" by the general public, which is a misnomer as tsunamis are unrelated to the tides.

Tides result from the imbalanced extraterrestrial gravitational influences of the moon, the Sun, and planets. The formation of a tsunami also has nothing to do with atmospheric disturbances. Tsunamis normally occur in Pacific Ocean, and are relatively rare in areas surrounding the Indian subcontinent. The December 26th tsunami disaster is an example of a tsunami which was triggered by an earthquake.


Tsunami approaching the coasts
Source: Wikipedia.org

References

  • USGS Earthquake Hazards Program-Latest Earthquakes. US Geological Survey. Retrieved March 5, 2005, from http://earthquake.usgs.gov/eqinthenews/2004/usslav/
  • 26 December 2004 Tsunam. National Institute of Oceanography, India. Retrieved March 5, 2005, from http://www.nio.org/jsp/tsunami.jsp
  • Tsunami!: The WWW Tsunami Information Resource. Earth and Space Sciences (Geology and Geophysics) at UW Retrieved March 5, 2005, from http://www.ess.washington.edu/tsunami/toc.html
  • Sumatra Earthquake 26 December 2004. British Geological Survey. Retrieved from http://www.earthquakes.bgs.ac.uk/latest_info.htm

Content Outline

  • USGS Earthquake Hazards Program-Latest Earthquakes. US Geological Survey. Retrieved March 5, 2005, from http://earthquake.usgs.gov/eqinthenews/2004/usslav/
  • 26 December 2004 Tsunam. National Institute of Oceanography, India. Retrieved March 5, 2005, from http://www.nio.org/jsp/tsunami.jsp
  • Tsunami!: The WWW Tsunami Information Resource. Earth and Space Sciences (Geology and Geophysics) at UW Retrieved March 5, 2005, from http://www.ess.washington.edu/tsunami/toc.html
  • Sumatra Earthquake 26 December 2004. British Geological Survey. Retrieved from http://www.earthquakes.bgs.ac.uk/latest_info.htm