Earthquake and Tsunami:
Maps, charts and statistics

by George Weber


 

 

 

Table of Contents

 

1. The Cause: moving geological plates 

2. Earthquake: the first disaster

21. The Big One: the Richter scale 9.0 event of 26 December 2004

2.2. Sequence of events on 26 December 2004

2.3. Aftershocks

2.4. The Richter scale 8.7 event of 28 March 2005 (Simeulue/Nias islands)

2.5. The Richter scale 6.8 event of 10 April 2005 (Siberut island)

2.6. The Richter scale 6.7 event of 5 July 2005 (Nias island)

2.7. The Richter scale 7.2 event of 24 July 2005 (Nicobar islands)

2.8. The Richter scale 4.4 event of 26th October 2005 (Simeulue island) 

2.9. The Richter scale 6.5 event of 19 November 2005 (Simeulue island)

3. What is a tsunami?

3.1. Difference between tsunami and storm waves

3.2. How a tsunami starts - in principle

3.3. How a tsunami destroys - in principle

3.4. How the tsunami of 26 December 2004 started 

4. Tsunami: the second disaster

4.1. Sumatra

4.2. Andaman and Nicobar islands

4.3. Thailand

4.4. Mainland India

4.5. Sri Lanka

 

5. Grim statistics: dead, missing, injured, displaced

 

6. What next?

6.1. Earthquakes and tsunamis

6.2. Volcanoes

  

For news items on the disaster, see Tsunami NEWS

For photographs of the disaster, see Tsunami: the Tragedy in pictures

For a short as well as a detailed explanation of the Richter scale see:
- http://www.seismo.unr.edu/ftp/pub/louie/class/100/magnitude.html

For a definition of the Mercalli scale see:
- http://www.seismo.unr.edu/ftp/pub/louie/class/100/mercalli.html

 

 

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Last changed 27 August 2006