Entrance of hot pyroclastic flows into the sea: experimental observations

  title={Entrance of hot pyroclastic flows into the sea: experimental observations},
  author={Armin Freundt},
  journal={Bulletin of Volcanology},
  • A. Freundt
  • Published 26 November 2002
  • Environmental Science
  • Bulletin of Volcanology
Abstract.The entrance of hot pyroclastic flows into water has been observed in a series of experiments in which shooting granular flows of hot ignimbrite ash (≤403 °C), of bulk density near that of water, run down a smooth chute and enter a water-filled tank at an angle of 26°. Flows of relatively cool ash (<150 °C) impulsively displace some volume of near-shore water upon impact, generating a water wave that rapidly travels away from shore. The granular flow material then separates into two… 

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