Publication Citation

USGS Series Fact Sheet
Report Number 114-97
Title Lahars of Mount Pinatubo, Philippines
Edition Version 1.1 Online Only
Language ENGLISH
Author(s) Newhall, Christopher G.; Stauffer, Peter H.; Hendley, James W., II
Year 1997
Originating office Volcano Hazards Program
USGS Library Call Number (200) F327 no.97-114
Physical description 1 sheet [2 p.]: ill., map ; 28 cm.
ISBN

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Abstract

On June 15, 1991, Mount Pinatubo in the Philippines exploded in the second largest volcanic eruption on Earth this century. This eruption deposited more than 1 cubic mile (5 cubic kilometers) of volcanic ash and rock fragments on the volcano's slopes. Within hours, heavy rains began to wash this material down into the surrounding lowlands in giant, fast-moving mudflows called lahars. In the next four rainy seasons, lahars carried about half of the deposits off the volcano, causing even more destruction in the lowlands than the eruption itself.