This module is the second in the four-part Volcanic Ash series. It provides information about the geological, and geophysical processes related to volcanic activity and volcanic ash in the atmosphere and on the ground. It discusses four types of volcanic eruptions and describes six major volcanic hazards:
- Tephra
- Pyroclastic flow
- Lahar
- Lava flow
- Volcanic gas
- Tsunami
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This module will prepare the learners to:
- Identify the geological elements involved in volcanic eruptions
- Locate currently active volcanoes and major fault lines/plates in the world
- Describe the process of an explosive volcanic eruption
- Identify eruption types and describe their ash dispersion patterns
- List the most common volcanic hazards and the threats they pose
Aviation, dispersion, volcanic ash, volcanism, explosive eruption, plinian, hawaiian, strombolian, vulcanian, plate tectonics, volcanoes, Mount Pinatubo, Eyjafjallajokull, tephra, pyroclastic flow, lahar, lava flow, volcanic gas, tsunami, societal impacts, agriculture, public, HYSPLIT, Mount Redoubt, climate, radiation balance, marine,
November 6, 2013: The Fall 2013 update of "Volcanic Ash: Volcanism" includes content focused on additional geographic regions of volcanic activity, including Africa and New Zealand. Sections 2.0 Eruption Dynamics and 3.0 Volcanic Regions contain new graphics illustrating tectonic plate motion and active volcanic areas. The 2011 Puyehue Cordón-Caulle and 2010 Eyjafjallajökull eruptions are put into historical context.
