Types of volcanic eruption. Artwork showing four different types of volcanic eruption: Surtseyan (upper left),Hawaiian (upper right),Strombolian (lower right) and ultra-Plinian (lower left). A Surtseyan (or phreato-magmatic) eruption occurs when viscous magma comes into contact with water (here the sea). A Hawaiian eruption produces fluid and extensive lava flows,rather than explosive ash falls. Strombolian eruptions are regular,small,explosive eruptions of lava and ash. An ultra-Plinian eruption is the largest type of Plinian eruption,forming an ash column that can be over 25 kilometres high,spreading out to form mushroom-shaped clouds in the stratosphere and depositing ash over a large area | |
Licence : | Droits gérés |
Crédit: | Science Photo Library / Hks, Gary |
Taille de l’image : | 4163 px × 3266 px |
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