Earthquake happens because
- Releasing heavy amount of strain energy
- Landslide of crust
- magma eruption [volcanic fact]
- fault plane slippage
- Sheare stress
Earthquake
- Tectonic
- Volcanic
When a tectonic earthquake happens it happens in large amount of scale . But volcanic earthquake is much small in scale .
Focus -
The most effective earthquake point .Generally within 110 km under earth's surface .
Indian Ocean [tsunami]
Year - 2004
In Richter scale the magnitude was 9.2 .
Valdivia
Year- 1960
In Richter scale the magnitude was 9.5 .
Alaska
Year- 1964
In Richter scale the magnitude was 9.1 .
Ecuador & Colombia
Year - 1906
Almost 2000 people were killed . In Richter scale it's magnitude was 8.8 which produced a strong tsunami .
Cascadia
Year -[ 1700-1701] approximate
In Richter scale the magnitude was approximately 9.0 .
Sumatra
Year - 1833
In Richter scale the magnitude was 9.0-9.1 .
Rat Islands in Alaska
Year - 1965 In Richter scale the magnitude was 8.9 .
