Mount St. Helens Summer 2013 Fieldwork
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Summer is a busy season for USGS-CVO field crews. When weather permits, monitoring stations are repaired, replaced or fitted with new technologies to improve volcano monitoring. Crews also survey and make direct observations of landforms, such as channels and streams. The information is used to improve our understanding of Mount St. Helens (and other volcanoes) during both eruptive and non-eruptive periods.