Distribution of Geophysical Hazards (SL IB Geography)

• Earthquakes occur at all types of plate boundaries
  • Most occur along the Pacific “Ring of Fire” (approximately 90%)

Distribution of earthquakes

• Most volcanoes occur at constructive and destructive plate boundaries
• The majority of active volcanoes (approximately 75%) are located around the rim of the Pacific Ocean called the “Ring of Fire”
• Hotspots occur away from plate boundaries and are plumes/columns of magma that escape through the Earth's crust

Distribution of volcanic eruptions

• The majority of mass movements occur in three main areas:
• Highland areas
• Along plate boundaries
• Coastal areas

Distribution of mass movement