ppt about Volcanoes & differet aspects of it

1. PREPARED BY:- Chirantan Banik ME- 3 rd Yr. Roll- 071020107010 KALYANI GOVT. ENGG. COLLEGE GUIDED BY:- Prof. Biswajit Maity, HOD, Dept. of Physics, KALYANI GOVT. ENGG. COLLEGE

5. Type Lava Volcano Effects Icelandic Basalt None or Shield Fissure Flows Hawaiian Basalt Shield Strombolian Basalt-Andesite Small Stratovolcano Mild, Continuous Vulcanian Andesite Stratovolcano Large eruption cloud Plinian Andesite – Rhyolite Stratovolcano Pyroclastic Flows Caldera-Forming Rhyolite Stratovolcano or None Large Pyroclastic Flows Phreatic Any Any Steam Blast

8. VEI Classification Description Plume Ejecta volume Frequency Example 0 Hawaiian non-explosive < 100 m < 10 4 m³ daily Mauna Loa 1 Hawaiian Strombolian gentle 100-1000 m > 10 4 m³ daily Stromboli 2 Strombolian Vulcanian explosive 1-5 km > 10 6 m³ weekly Galeras 1993 3 Vulcanian /Pelean severe 3-15 km > 10 7 m³ yearly Lassen 1915 4 Pelean/Plinian cataclysmic 10-25 km > 0.1 km³ ≥ 10 yrs Soufrière Hills 1995 5 Plinian paroxysmal > 25 km > 1 km³ ≥ 50 yrs St. Helens 1980 6 Plinian/Ultra-Plinian colossal > 25 km > 10 km³ ≥ 100 yrs Pinatubo 1991 7 Plinian/Ultra-Plinian super-colossal > 25 km > 100 km³ ≥ 1000 yrs Tambora 1815

9. Mount Etna From Space

10. Pinatubo ash plume reaching a height of 19 km, 3 days before the climactic eruption of 15 June 1991