为您找到"
vulcanian
"相关结果约100,000,000个
A Vulcanian eruption is a type of volcanic eruption with a dense cloud of ash-laden gas exploding from the crater. Learn about its characteristics, examples, and dangers from this Wikipedia article.
Learn about vulcanian eruptions, a type of moderately explosive but intermittent volcanic activity that produces ash columns and pyroclastic flows. See examples of vulcanian eruptions in Alaska and California national parks.
Learn about vulcanian eruptions, short-lived, moderately explosive volcanic events named after Vulcano island. Find out their features, causes, and how they differ from other eruption styles.
Learn about the different types of volcanic eruptions, from Hawaiian to Plinian, and how they are classified by magma composition, gas content, and explosiveness. A Vulcanian eruption is a short, violent explosion of viscous lava that produces ash, gas, and pyroclastic flows.
The Vulcanian type, named for Vulcano Island near Stromboli, generally involves moderate explosions of gas laden with volcanic ash. This mixture forms dark, turbulent eruption clouds that rapidly ascend and expand in convoluted shapes.. A Pelean eruption is associated with explosive outbursts that generate pyroclastic flows, dense mixtures of hot volcanic fragments and gas described in the ...
Vulcanian eruptions will deposit moderately sorted or well-sorted tephra, covering larger areas than Strombolian types and smaller than Plinian eruptions. Since they are episodic, these eruptions will form stratified, relatively thin beds of fine ash, but some ash beds are as thick as one kilometer. This eruption will also deposit lapilli ...
Learn about the four types of volcanic eruptions: Hawaiian, Strombolian, Vulcanian, and Plinian. Vulcanian eruptions are the most explosive and can blast tephra and gas to a height of 5 to 10 km.
Other articles where Vulcanian eruption is discussed: volcano: Six types of eruptions: The Vulcanian type, named for Vulcano Island near Stromboli, generally involves moderate explosions of gas laden with volcanic ash. This mixture forms dark, turbulent eruption clouds that rapidly ascend and expand in convoluted shapes.
Vulcanian eruptions initiate when a coherent magma plug or dome that sealed the conduit is suddenly disrupted. Observational evidence of this initiation process consists of the formation of crystallized and degassed domes, ballistic clasts launched at the very beginning of an eruption, and dense ballistic clasts in deposits. ...
A vulcanian (note the different term from "volcanic") eruption is an intermediately violent type of explosive eruption, stronger than strombolian explosions but much weaker than Plinian eruptions. During vulcanian eruptions, a relatively large solid plug is ejected when magmatic gas pressure that had build up beneath it overcomes the strength ...