James W. Vallance
I supervise the field geology and hydrology group at Cascades Volcano Observatory. My research focuses on postglacial volcanism and hazards at volcanoes such as Mount Rainier and Mount St. Helens in Washington State. I also study the nature and behavior of lahars, floods, avalanches, pyroclastic flows, and dome growth.
Education and Certifications
PhD Geology, Michigan Technological University, 1994
MS Geology, Colorado University, Boulder, 1986
BA Geology, Colorado University, Boulder, 1980
Affiliations and Memberships*
American Geophysical Union
Geological Society of America
Honors and Awards
Fellow, Geological Society of America
NSERC and NSF postdoctoral fellowships, McGill University, Canada
Science and Products
Timing, distribution, and volume of proximal products of the 2006 eruption of Augustine Volcano: Chapter 8 in The 2006 eruption of Augustine Volcano, Alaska
Pyroclastic flows, lahars, and mixed avalanches generated during the 2006 eruption of Augustine Volcano: Chapter 10 in The 2006 eruption of Augustine Volcano, Alaska
Photographic documentation of the evolution of Crater Glacier, Mount St. Helens, Washington, September 2006–November 2009
Mount St. Helens: A 30-year legacy of volcanism
Eruption-related lahars and sedimentation response downstream of Mount Hood: Field guide to volcaniclastic deposits along the Sandy River, Oregon
Eruption-related lahars and sedimentation response downstream of Mount Hood: Field guide to volcaniclastic deposits along the Sandy River, Oregon
Volcan Baru: Eruptive History and Volcano-Hazards Assessment
Effects of lava-dome growth on the crater glacier of Mount St. Helens, Washington
Photogeologic maps of the 2004-2005 Mount St. Helens eruption
Seismic and acoustic recordings of an unusually large rockfall at Mount St. Helens, Washington
Emplacement of a silicic lava dome through a crater glacier: Mount St Helens, 2004-06
Tephra deposits for the past 2600 years from Irazú Volcano, Costa Rica: Chapter 12 in Volcanic hazards in Central America
Science and Products
Timing, distribution, and volume of proximal products of the 2006 eruption of Augustine Volcano: Chapter 8 in The 2006 eruption of Augustine Volcano, Alaska
Pyroclastic flows, lahars, and mixed avalanches generated during the 2006 eruption of Augustine Volcano: Chapter 10 in The 2006 eruption of Augustine Volcano, Alaska
Photographic documentation of the evolution of Crater Glacier, Mount St. Helens, Washington, September 2006–November 2009
Mount St. Helens: A 30-year legacy of volcanism
Eruption-related lahars and sedimentation response downstream of Mount Hood: Field guide to volcaniclastic deposits along the Sandy River, Oregon
Eruption-related lahars and sedimentation response downstream of Mount Hood: Field guide to volcaniclastic deposits along the Sandy River, Oregon
Volcan Baru: Eruptive History and Volcano-Hazards Assessment
Effects of lava-dome growth on the crater glacier of Mount St. Helens, Washington
Photogeologic maps of the 2004-2005 Mount St. Helens eruption
Seismic and acoustic recordings of an unusually large rockfall at Mount St. Helens, Washington
Emplacement of a silicic lava dome through a crater glacier: Mount St Helens, 2004-06
Tephra deposits for the past 2600 years from Irazú Volcano, Costa Rica: Chapter 12 in Volcanic hazards in Central America
*Disclaimer: Listing outside positions with professional scientific organizations on this Staff Profile are for informational purposes only and do not constitute an endorsement of those professional scientific organizations or their activities by the USGS, Department of the Interior, or U.S. Government