Monitoring Mount St. Helens
{"Image DocumentName": "Monitoring Mount St. Helens", "Image ImageDescription": "When Mount St. Helens erupted catastrophically 18 May 1980, scientists were already monitoring it extensively. The map shows the kinds of instruments in place in mid-April of The photo is of Mount St. Helens erupting 18 May USGS. Map from Smithsonian National Museum of Natural History: Global Volcanism Program: St. Helens Index of Monthly Reports.  Retrieved 12 December Photo by Post, A Retrieved 12 December 2011.", "Image XResolution": "37", "Image YResolution": "37", "Image ResolutionUnit": "Pixels/Centimeter", "Image Software": "SlidePlayer", "Image YCbCrPositioning": "Centered"}