eruption column

a cloud of ash emitted during a volcanic eruption

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  • Eruption column — over Mount Pinatubo in the Philippines An eruption column consists of hot volcanic ash emitted during an explosive volcanic eruption. The ash forms a column rising many kilometres into the air above the peak of the volcano. In the most explosive… …   Wikipedia

  • eruption column — ALASKA VOLCANO OBSERVATORY GLOSSARY The vertical portion of the eruption cloud that rises above a volcanic vent …   Glossary of volcanic terms

  • eruption cloud — ALASKA VOLCANO OBSERVATORY GLOSSARY Cloud of gas, ash, and other fragments that forms during an explosive volcanic eruption and travels long distances with the prevailing winds. USGS PHOTO GLOSSARY OF VOLCANIC TERMS A cloud of tephra and gases… …   Glossary of volcanic terms

  • 1980 eruption of Mount St. Helens — Photograph of the eruption column, May 18, 1980 Volcano Mount St. Helens …   Wikipedia

  • Hatepe eruption — The Hatepe eruption (named for the Hatepe Plinian pumice fall deposit [cite journal |last=Talbot |first=J. P. |authorlink= |coauthors=Self, S.; Wilson, C. J. N. |year=1994 |month= |title=Dilute gravity current and rain flushed ash deposits in the …   Wikipedia

  • plinian eruption — ALASKA VOLCANO OBSERVATORY GLOSSARY An explosive eruption in which a steady, turbulent stream of fragmented magma and magmatic gases is released at a high velocity from a vent. Large volumes of tephra and tall eruption columns are characteristic …   Glossary of volcanic terms

  • vulcanian eruption — GLOSSARY OF VOLCANIC TERMS An explosive volcanic eruption generally expelling less than 1km3 of material, but with an eruption column that may reach heights of up to 10 20km (Nakada, 2000, p. 945). These eruptions last on the order of seconds to… …   Glossary of volcanic terms

  • 1888 Eruption of Mount Bandai — The 1888 Eruption of Mount Bandai was a major volcanic eruption which occurred during the Meiji period of the Empire of Japan. The eruption occurred on 1888 07 15, and pyroclastic flows buried villages on the northern foot of the mountain, and… …   Wikipedia

  • Oruanui eruption — A large eruption column during the Oruanui eruption as it may have appeared from space The Oruanui eruption of New Zealand s Taupo Volcano was the world s largest known eruption in the past 70,000 years, with a Volcanic Explosivity Index of 8. It …   Wikipedia

  • Vulcanian eruption — Vulcanian eruptions usually commence with phreatomagmatic eruptions which can be extremely noisy due the rising magma heating water in the ground. This is usually followed by the explosive throat clearing of the vent and the eruption column is… …   Wikipedia

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