Geography-RESTLESS EARTH-tsunami-supervolcanoes
mind map to revise supervolcanoes and tsunami in restless earth topic
- Created by: zhzstudent
- Created on: 08-02-14 12:32
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- geography
- tsunami
- destructive plate boundary
- plates jerk
- displace column of water
- column split-water travel ashore
- displace column of water
- plates jerk
- boxing day tsunami 2004
- 91 manitude
- 30m high wave
- epicentre= west coast of summatra
- countries affected
- indoneisa
- thailand
- india
- sri lanka
- effects
- 230,000 killed
- 1.7 million homes lost
- towns villages destroyed
- infrastucture destoyed
- road
- water pipes
- 5-6 million need emergency food,water,medical
- environmental damage
- sea water= no crops
- coral reefs,amngroves,sand dunes destoryed
- response
- short term
- money pledged from foreign gov, charities, individual+business
- give-fod water, supplies, and tents and medical
- sent ships, soldiers,,specialist teams
- rescue
- distribute resources
- help clear up
- money pledged from foreign gov, charities, individual+business
- long term
- billions pounds- rebuild infrastucture
- progammes to rebuild house+ emplyment issues
- tsunami warning ysytem in INDIAN OCEAN
- disaster warning plans made
- trained volunteers help locals
- short term
- destructive plate boundary
- supervolcanoes
- characteristics
- destructve margines
- over hot spot
- caldera
- crater many times of vent
- large size
- large volume of material
- flat
- cover large area
- process
- magma rise through crust cracks
- magma basin forms
- pressure build- bulge-km wide
- bulge crack-create vent
- lava escape,erupt=earthquakes
- plumes of ash and rock
- magma basin empties
- bulge not supported
- bulge collapse =more lava
- eruption finished= caldera left
- bulge collapse =more lava
- bulge not supported
- magma basin empties
- plumes of ash and rock
- lava escape,erupt=earthquakes
- bulge crack-create vent
- pressure build- bulge-km wide
- magma basin forms
- magma rise through crust cracks
- example
- yellowstone
- thousands of cubic of ash and lava
- pyroclastic flow- kill burn bury
- tens of miles destoyed
- ash block sunlght
- ash cover field- no crop- stavattion
- characteristics
- tsunami
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