GEOGRAPHY

CASE STUDIES: GEOPHYSICAL

HideShow resource information

EARTHQUAKES

1989 Loma Prieta Earthquake

  • 63 people killed
  • 7.0 on the Richter Scale
  • 3000 injured
  • Collapse of Nimitiz Freeway
  • Estimated damage of $6 billion
  • Epicentre in Santa Cruz Mountains

1995 Kobe Earthquake

  • 7.3 on the Richter Scale
  • Epicentre on the Awaji Island, 20 km from Kobe
  • 6434 people died, of them 4600 in Kobe
  • Japan's worst earthquake since 1923
  • 10 trillion Yen in damage, which was 2.5% of Japan's GDP at the time
  • Hanshin expressway toppled



1 of 2

VOLCANOES

Mount Pinatubo 1991

  • Located on Luzon Island, Philippines
  • Biggest eruption since 1912
  • Ejected 10 cubic kilometres of magma
  • Awoken by Luzon Earthquake, which recorded 7.7 on the Richter Scale
  • Climatic eruption brough pyroclastic flows and lahars due to Typhoon Yuna
  • Ash cloud covered 125,000 square kilometres
  • Over 800 people killed
  • 2.1 million people affected despite evacuation
  • 8000 houses completely destroyed and infrastructure costs were 3.8 billion pesos

Mount St Helens 1980

  • Most deadly eruption in history of USA
  • Killed 57 people and destroyed 200 homes and 185 miles of highway
  • Released 1600 times amount of thermal energy of that of Hiroshima
  • North face slid away causing mudslides and pyroclastic flows
  • Cost $1.1 billion.
2 of 2

Comments

No comments have yet been made

Similar Geography resources:

See all Geography resources »See all Natural hazards resources »