reuben ppt

TSUNAMI WAVESCaused by Earthquakes under Ocean, or

other events – landslides, volcanic eruptions, asteroid impacts, etc.

In Deep Ocean the Tsunami Wave is only about 3 feet high but 100 miles wide and moving at speed of a jet airplane.

Alfred Wegner observed that South America and Africa continents fit like a gig saw puzzle

Proposed Continental Drift of Plates (Plate Tectonics) and that 200 million Years ago a super continent of Pangaea existed.

SEA FLOOR SPREADING

Occurs along the Mid-Atlantic Ridge pushing the African and European Plates away from the North and South American Plates at about 1 inch/year

This then pushes the Pacific Ocean floor under the Plates on the opposite side of America Plates and Euroasian and Africa Plates

Conclusions

The Tsunami caused by the Sumatra EQ killed >300,000 people because there was no Warning System.

Source region for Sumatra Tsunami extends from Banda Aceh through the Nicobar Islands.

We need a method for estimating size of great earthquakes within a time frame useful to the Tsunami Warning System.