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Cascades

Shadows of girls hiking in a line
Posted inNews

GeoGirls: Confidence Erupts from a Camp at a Volcano

Lesley Evans Ogden, Science Writer by Lesley Evans Ogden 22 April 202012 April 2022

Summer camp at Mount Saint Helens empowers girls with science, confidence, and fun.

Two brothers equipped with backpacks and ice axes stand on the summit of Mount Adams (3,743 meters), admiring their next objective: Mount Rainier (4,392 meters), the tallest and most challenging of the Cascade volcanoes.
Posted inFeatures

Climbing the Occasionally Cataclysmic Cascades

Mary Caperton Morton, Science Writer by Mary Caperton Morton 27 February 202010 May 2022

Living in Geologic Time: Every one of the Pacific Northwest’s volatile volcanoes is likely to erupt again before the range goes extinct.

Satellite image of the Strait of Juan de Fuca
Posted inNews

Fluid Pressure Changes Grease Cascadia’s Slow Aseismic Earthquakes

Mary Caperton Morton, Science Writer by Mary Caperton Morton 18 February 202019 August 2022

Twenty-five years’ worth of data allows scientists to suss out subtle signals deep in subduction zones.

Geologist points at a rock feature in a cliff.
Posted inScience Updates

Addressing Cascadia Subduction Zone Great Earthquake Recurrence

by L. Staisch, M. Walton and Rob Witter 2 July 201918 January 2022

USGS Powell Center Cascadia Earthquake Hazards Working Group; Fort Collins, Colorado, 25–29 March 2019

Vista of Half Dome and Yosemite National Park
Posted inNews

Role of Continental Arcs in Global Carbon Dioxide Emissions

Erik Klemetti, Science Writer by Erik Klemetti 10 June 20197 March 2023

Continental arcs are a major player in global carbon dioxide emissions, but quantifying that relationship is hard. A new study accepts the challenge on a global scale over 750 million years.

A view of Mount Rainier National Park in summer
Posted inResearch Spotlights

How Will Melting Glaciers Affect Streamflow?

Sarah Stanley, Science Writer by Sarah Stanley 1 February 20199 February 2023

High-resolution modeling of summertime streamflow in the Pacific Northwest reveals the effects of glacial retreat on streamflow will vary by elevation.

Klickitat Lake in western Oregon formed when a landslide that originated along the forested ridgeline dammed a stream.
Posted inScience Updates

Hunting for Landslides from Cascadia’s Great Earthquakes

by J. P. Perkins, J. J. Roering, W. J. Burns, W. Struble, B. A. Black, K. M. Schmidt, Alison Duvall and N. Calhoun 8 August 201815 October 2021

Researchers examine the rings of drowned trees in landslide-dammed lakes for clues to today’s earthquake hazards in the Pacific Northwest.

Researchers combine diverse data sets to analyze earthquake recurrence intervals in central Washington State.
Posted inResearch Spotlights

Constraining Central Washington’s Potential Seismic Hazard

by Terri Cook 19 June 20183 July 2023

Fault geometry and slip rate analyses show deformation in the Yakima Fold Province accelerated in the Pleistocene and has remained elevated, offering new insights into earthquake recurrence intervals.

Researchers look at environmental conditions in the Cascadia subduction zone to better understand earthquake hazards
Posted inResearch Spotlights

Revising an Innovative Way to Study Cascadia Megaquakes

by S. Witman 12 September 201710 March 2022

Researchers probe natural environments near subduction zones to decrypt underlying mechanisms of major earthquakes.

Posted inNews

Assessing Earthquake Risks in the Pacific Northwest

by Randy Showstack 28 October 201428 October 2022

While megaquakes occasionally occur along the Cascadia margin, smaller but more frequent crustal earthquakes are a more immediate threat, according to a natural hazards expert.

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