Flashcards in EQ2 Deck (12)
what geographical factors influence vulnerability and resilience?
degree of urbanisation
what were the effects of the sichuan earthquake?
5 million homeless
45 million people in total affected
mt saint helens 1980
63 people killed by poisonous gases
lahars covered large area surrounding volcano.
sediment carried downstream ruined barge transport on Columbia River.
mt nyiragongo 2002
14 villages destroyed in lava flow
245 total deaths but rural area
lava flow made it difficult to travel around goma as it filled roads-aid unavailable in inaccessible regions.
tohuku tsunami 2011
pacific plate subducted under north american plate
estimated cost 300$ billion
level 7 nuclear incident at fukushima
continental collision boundary: indian and eurasian plate.
35% GDP lost
loss of tourism: unesco world heritage sites in kethmandu destroyed.
indian ocean 2004
countries affected lics: india, myamar, kenya, tanzania...
mangrove forests had been removed for tourist developments.
1.7 mill homeless
8 mill litres of oil spilled from oil plants in indonesia.
what is the mercali scale?
measures intensity of earthquakes-effect and damage
changes according to where you're measuring:damage near epicentre greater than further away.
what is the MMS?
measures magnitude of earthquake by measuring seismic energy released. uses newer technologies than richter, more accurate, basically a level richter
what is the VEI?
relative measure of explosiveness of volcnic eruptions, logarithmic scale.
whats on hazard profiles?
magnitude, speed of onset and areal extent,
duration, frequency, spatial predictability