Multiphase flow dynamics of pyroclastic density currents during the May 18, 1980 lateral blast of Mount St. Helens

• Main Authors: Voight, Barry., Widiwijayanti, Christina., Ongaro, T. Esposti., Clarke, A. B., Neri, A.
• Format: Article
• Language: English
• Published: 2013
• Subjects: DRNTU::Science::Physics::Geophysics and geomagnetism
• Online Access: https://hdl.handle.net/10356/99209; http://hdl.handle.net/10220/17126
• Institution: Nanyang Technological University

The dynamics of the May 18, 1980 lateral blast at Mount St. Helens, Washington (USA), were studied by means of a three-dimensional multiphase flow model. Numerical simulations describe the blast flow as a high-velocity pyroclastic density current generated by a rapid expansion (burst phase, lasting...