Characterizing Dynamic Pressure Variations from Tree Damage Resulting from the 18 May 1980 Pyroclastic Density Current of Mount St. Helens

Nicole Guinn, University of Texas at Austin, Austin, TX, United States, James E Gardner, University of Texas at Austin, Department of Geological Sciences, Jackson School of Geosciences, Austin, TX, United States and Mark A. Helper, University of Texas at Austin, Department of Geological Sciences, Austin, TX, United States