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・ Volcanic bomb
・ Volcanic City
・ Volcanic cone
・ Volcanic crater
・ Volcanic Creek Cone
・ Volcanic dam
・ Volcanic desert
・ Volcanic Dungeon
・ Volcanic Eifel
・ Volcanic explosivity index
・ Volcanic field
・ Volcanic flight cancellation
・ Volcanic gas
・ Volcanic glass
・ Volcanic group
Volcanic hazards
・ Volcanic Hills
・ Volcanic Hills (California)
・ Volcanic Hills (Nevada)
・ Volcanic history of the Northern Cordilleran Volcanic Province
・ Volcanic impacts on the oceans
・ Volcanic Legacy Scenic Byway
・ Volcanic passive margin
・ Volcanic pipe
・ Volcanic plateau
・ Volcanic plug
・ Volcanic plume
・ Volcanic Repeating Arms
・ Volcanic rock
・ Volcanic Rock (album)


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Volcanic hazards : ウィキペディア英語版
Volcanic hazards

A Volcanic hazard is the probability that a volcanic eruption or related geophysical event will occur in a given geographic area and within a specified window of time. The risk that can be associated with a volcanic hazard depends on the proximity and vulnerability of an asset or a population of people near to where a volcanic event might occur.
==Lava flows==
There are different forms of effusive lava that can provide different hazards. Pahoehoe lava is smooth and ropy while Aa lava is blocky and hard. Lava flows normally follow the topography, sinking into depressions and valleys and flowing down the volcano. Lava flows will bury roads farmlands and other forms of personal property.〔Kusky, 24〕 This lava could destroy homes, cars, and lives standing in the way.〔Rosi, 63〕 Lava flows are dangerous, however, they are slow moving and this gives people time to respond and evacuate out of immediate areas. People can mitigate this hazard by not moving to valley or depressed areas around a volcano.〔Ernst, et. al, 6693〕

抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
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