EOSC 114 Chapter Notes - Chapter 13: Lahar, Lava Dome
27 Aug 2017
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Hazard can also cause environmental harm or damage. The magmas are either erupted as lavas or pyroclastic materials in explosive eruptions. Particular types of hazards: lava flow, fallout deposits (the ash are falling out from the sky, pyroclastic flows (very damaging, lahars (mud flows) they can happen without volcanic eruption, sector collapse (can be related to landslide, toxic gases. Lava flows: usually not that dangerous to human life, flows downslope with gravity, buildings, plants or crops are not able to get out of the way. National park hard make sure that it is a volcanic area. The lava flows down into the ocean and threatens the closing of the port (affect fishing). Pyroclastic falls (ash falls) the gas that is jetted out of the volcano gets high up into the atmosphere. Creates a lot of turbulence on the plane. The wind controls the direction of where the ash cloud moves.
