Volcanology lecture 18 - tsunamis

Where do most tsunamis originate from?

Subduction zones

What was the magnitude of the boxing day tsunami earthquakes?

9.2

How many countries did the boxing day tsunami hit?

12

Roughly how many people were killed in the boxing day tsunami?

227,000

Why were so many people killed during the boxing day tsunami?

There was no warning system

How many people were displaced by the boxing day tsunami?

1.8 million

How many more women than moment were killed in Sri Lanka, India and Indonesia in the boxing day tsunami?

4 times as many

What was the magnitude of the Japan earthquake 2011?

9.1

How many people were killed in the 2011 Japan tsunami?

20,000

Was there an extensive early warning system in place for the Japan 2011 tsunami?

Yes

The Pacific tsunami warning system includes how many countries?

More than 20

How many seismographs record data for the Pacific tsunami warning system?

20

How many stations record local sea level rise for the Pacific tsunami warning system?

80

What does DART stand for?

Deep ocean Assessment and Reporting of Tsunamis

Why is there great concern about the Cascadia subduction zone?

A megathrust earthquake could generate a large tsunami

Where would the Cascadia subduction zone megathrust l