Submarine pyroclastic flows of the 1883 eruption of Krakatau volcano

Document Type

Article

Date of Original Version

1-1-1991

Abstract

The recent collection of samples from the seafloor surrounding Krakatau volcano provides new insights into the explosive 1883 eruption and the generation of tsunamis that claimed the lives of >32 000 people. A minimum of 14.0km3 of volcanic material accumulated within a 20km radius of the volcano over a period of ~18 hours. Lithological and sedimentological features of the submarine deposits indicate that they formed by the entrance of hot, subaerially generated pyroclastic flows into the sea. Deposition of pyroclastic flows and hot surges on islands north of the volcano and as far as the south Sumatra coast also suggests long-range transport of low-density flows across the ocean surface. -from Authors

Publication Title, e.g., Journal

National Geographic Research & Exploration

Volume

7

Issue

3

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