Compare the strength of the earthquake which caused each tsunami. What was the maximum height of each tsunami wave as it reached the shore?

1 answer

To provide a comprehensive comparison of the strength of earthquakes that caused tsunamis and the maximum height of the resulting tsunami waves, we can look at some of the most significant tsunami events in history. Here are a few notable examples:

  1. 2004 Indian Ocean Earthquake and Tsunami

    • Earthquake Strength: Magnitude 9.1-9.3
    • Date: December 26, 2004
    • Maximum Tsunami Height: Over 30 meters (approximately 100 feet) in some areas, particularly in Aceh, Indonesia.
  2. 2011 Tōhoku Earthquake and Tsunami

    • Earthquake Strength: Magnitude 9.0
    • Date: March 11, 2011
    • Maximum Tsunami Height: Approximately 40.5 meters (over 133 feet) recorded in some areas, particularly in Miyako, Japan.
  3. 1960 Valdivia Earthquake and Tsunami

    • Earthquake Strength: Magnitude 9.5
    • Date: May 22, 1960
    • Maximum Tsunami Height: Approximately 25 meters (82 feet) in some locations in Chile; however, waves reached the U.S. West Coast and caused heights of about 10 meters (33 feet).
  4. 1946 Aleutian Islands Earthquake and Tsunami

    • Earthquake Strength: Magnitude 8.6
    • Date: April 1, 1946
    • Maximum Tsunami Height: Approximately 25 meters (82 feet) at Scotch Cap Lighthouse in the Aleutians.
  5. 2010 Haiti Earthquake

    • Earthquake Strength: Magnitude 7.0
    • Tsunami: This earthquake did not generate a significant tsunami as traditionally defined, but it caused severe destruction due to the earthquake's strength and shallow depth.

Summary

  • Most Powerful Earthquake: The 1960 Valdivia Earthquake with a magnitude of 9.5.
  • Tallest Tsunami Recorded: The 2011 Tōhoku Tsunami with a maximum height of 40.5 meters.

Each of these events showcases the relationship between the strength of earthquakes and the resulting tsunami waves, with stronger earthquakes often leading to larger and more destructive tsunamis. However, local geography and other factors also significantly influence the height of tsunami waves when they reach land.