Chapter 2 Flashcards
0
Q
Magnitude
A
The size of the event
1
Q
Frequency
A
How often an event of a certain size occurs
2
Q
El Nino/La Nina
Normal Wind
A
- the trade winds move warm surface water towards W.Pacific
- cold water wells up along the W.Coast of S.America
3
Q
El Nino
A
- air pressure over the W.Coast of S.America becomes low
- air pressure over N.Australia becomes high
- weak trade winds leads to warm water eastward flow
- upwelling of cold water on S.America coast is suppressed
4
Q
La Nina
A
- air pressure is high over W.Coast of S.America
- air pressure is low over N.Australia
- very strong trade wind towards west
- more warm water is pushed to the W.Pacific Ocean
