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Photo glossary of volcano terms

Night view of a drainback on Kilauea Volcano, Hawai`i
Photograph by C. Heliker on 6 January 1983
 Kilauea Volcano, Hawai`i.
Night view of drainback on the east rift zone of Kilauea Volcano. The lava was erupted from a fissure about 100 m to the NW and cascaded over a 10-m high fault scarp before disappearing into a gaping crack.

Drainback on Mauna Loa Volcano, Hawai`i
Photograph by R.B. Moore on 25 March 1984
 Mauna Loa Volcano, Hawai`i.
Part of a large `a`a flow is pouring into a crack on the upper northeast rift zone of Mauna Loa during the 1st day of its 1984 eruption. A red cloud of ash billows from the crack. The flow is moving from left to right.

 

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U.S. Department of the Interior, U.S. Geological Survey, Menlo Park, California, USA
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Last modification: Monday, 04-Sep-2000 22:29:28 EDT (SRB)