WASHINGTON — Dr. Alexander Garza, associate dean at St. Louis University’s College of Public Health and Social Justice, will be ...
(Courtesy of Ben Pauk/Cascades Volcano Observatory )
August 20, 2012
Researchers with the Vancouver-based Cascades Volcano Observatory use GPS devices to measure changes in Mount St. Helens' shape. The volcano can shift as magma moves in and out of the active system below the surface.