In addition to monitoring stations within Mount St. Helens' crater, the Geological Survey also maintained a network of monitoring stations around the base of the volcano. Angle and distance measurements to the volcano's flanks were taken periodically to watch for any deformation similar to the 1980 bulge. Pictured here is an instrument station northeast of the volcano.
In addition to monitoring stations within Mount St. Helens' crater, the Geological Survey also maintained a network of monitoring stations around the base of the volcano. Angle and distance measurements to the volcano's flanks were taken periodically to watch for any deformation similar to the 1980 bulge. Pictured here is an instrument station northeast of the volcano.
Size: 4242px × 2827px
Photo credit: © CPC Collection / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: .., 1980, addition, angle, base, bulge., crater, deformation, distance, eruption, flanks, geological, helens, instrument, maintained, measurements, monitoring, mount, network, northeast, periodically, pictured, similar, st., station, stations, survey, volcanic, volcano, volcano., watch
