Drrr

• Mt. Pinatubo


  • Eruption in June 1991
• Mayon


  • Eruptions in 1984, 1993, 2001, 2009
• Taal Volcano


  • Eruptions in 1911 & 1965
• Violent eruption


  Magma has been blown to pieces
• Effusive eruption


  Lava is flowing out of the volcano
• Volcanic hazard


  A phenomena arising from volcanic activity that pose potential threat to people or property in a given area within a given period of time
• Lava flows


  • Streams-like flows of incandescent molten rock erupted from a crater
• Lava domes


  • Degassed/very viscous = extrude extremely slowly
• 5 Negative - Lava flows


  Threaten human life - burying, crushing, covering, burning everything in their path
• Ashfall or tephra fall


  Showers of airborne fine to coarse-grained volcanic particles
• Ashfall or tephra fall


  Can cause poor visibility, loss of agricultural lands, clogging, dangerous for aircrafts, harmful gases, acids, salts and heat, can collapse infrastructures
• Ashfall or tephra fall


  • Roofs of homes in Tagaytay on January 14
• Pyroclastic flows & surges

  Turbulent mass of ejected fragmented volcanic materials, mixed with gases that flow downslope at very high speed
• Pyroclastic flows & surges


  Destroy anything on its path, burn sites, burn forest, farmlands, destroy crops & buildings, cause burial and incineration
• Lahars


  Rapidly flowing thick mixture of volcanic sediments and water
• Lahars


  Can destroy bridges, roads, houses, etc by direct impact, can block tributary & submerge villages, can bury valleys and communities with debris
• Volcanic gases


  Gases and aerosols released into the atmosphere
• Debris avalanche or volcanic landslide

  Massive collapse of a volcano triggered by an earthquake
• Ballistic projectiles


  Volcanic materials directly ejected from the volcano's vent with force and trajectory
• Ballistic projectiles


  • Breadcrust bomb (ballistic) from a Holocene eruption of Augustine
• Tsunami


  Sea waves or wave train that are generated by sudden displacement of water
• Give 5 Negative of Lava Flows


  Threaten human life,crushing, burning, covering and burying.