Indian Ocean tsunami 2004 Flashcards
1
Q
tsunami definition
A
waves set off by submarine earthquakes
2
Q
cause of indian ocean tsunami
A
mega thrust earthquake and landslide caused by sinking of indian plate under burma plate
3
Q
magnitude of earthquake
A
9.00 (Richter scale)
4
Q
social impacts
A
- 800,000 reported homeless
- 400,000 lost jobs
- 12,000 moved to relief camps
- smashed 2400 boats
- tourist from 30 countries died=afraid to return
5
Q
environmental impacts
A
- homes, crops and fishing boats destroyed
- salt water contaminated sources of fresh water and destroyed arable land
- damaged coral reefs
- almost all endangered sea turtles lost on east coast ofd Sri Lanka
- large areas of mangroves uprouted
6
Q
factors that limited the response rate
A
- level of technology used to detect tsunamis and send info to land
- peoples understanding of tsunamis
7
Q
warning system introduced
A
uses a sensor on the ocean floor that measures water pressure. these measurements are then sent to a buoy on the surface by acoustic signal before then being transmitted by satellite to send early warning signals to those on land
8
Q
issue with the warning system
A
will the warning reach land in enough time to act
