Volcano Examples Flashcards
Nevaldo Del Ruiz 1985
Colombia
Not erupted since 1845 + 1595
Amero on debris
Lahars down E slope in Chinchina killed 1800
Amero 22,000 died
Hazards mapped + due presented 1 day after event
Mount Merapi, Indonesia
26 oct 2010
High pop density increased vulnerability
Indo Australian under Sunda
Explosive
8 seismometers hazard maps satellite observations = well prepared
Raised alert level to 4
BUT spiritual leader + gamekeeper valued spirits
Lahars Mangelang 3000 killed
Soil + nature = good reason to stay
Eyofjallajokull Iceland 2010
Began march ended October Constructive = Eurasian + N American plate mid Atlantic ridge High pressure N Atlantic = clockwise winds Ash to S + E island Sparsely population = x LT - impacts Air traffic 313 airports shut in Europe Lost 130m pounds a day Well prepared
Mount Pinatubo, Philippines 1991
Largest volcanic eruption in 50 yrs
Subduction andesitic magma
Successful management strategy
Team from PHIVOLCS monitor seismic activity
6 point scale made = simplify communication
Watched Lahar vid = reinforce effects
350 died secondary hazards killed 800
Tribal Aetas people refused to leave
Diseases eg measles
94% camp deaths Aetas people
2m affected + 80,000 ha farmland destroyed
Mount Pelée, Martinique
Caribbean island Acid some volcano destructive 1902 Viscous magma = andesite/rhyolite Animals suffered from gases 5 May pyro clastic flow through Blanche valley Election = gov didn't want scattered pop Warnings of eruptions - loud explosions 8 May pyro clastic flow down flank killed all but 2/29,000 St Pierre Port
