Join us for a Sense of Place Lecture!
Debris Flows from Mount Adams and Mount Hood with Richard Iverson
Debris flows are rapidly moving, water-saturated masses of rock and sediment that occur naturally on volcanoes like Mount Adams and Mount Hood. Small, storm-triggered debris flows occur routinely and commonly go unnoticed, but larger storm-triggered debris flows can wreak havoc on anything in their paths before depositing thick layers of rock, sand, and mud on valley floors. In November 2006, Mounts Adams and Hood experienced such debris flows. Far larger debris flows, the result of volcanic eruptions or large landslides, have occurred prehistorically on Mount Adams and Hood and have inundated the landscape along the entire lengths of the White Salmon and Hood Rivers. Join Richard Iverson, scientist emeritus at the U.S. Geological Survey’s Cascades Volcano Observatory, for a look at how scientists assess the what, where, how, and why of big debris flows and find out why it’s still so challenging to foretell when the next one will occur.
Join us for the conversation and Q & A that follows.
*October, November, and December lectures will be online via Zoom. We will re-evaluate in December to determine if we can safely shift to in-person presentations based on current statistics and public health guidelines. This decision will be announced via the Sense of Place newsletter, social media, and our website. Thank you for your flexibility and understanding.