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The David A. Johnston Cascades Volcano Observatory (CVO) is a volcano observatory in the US that monitors volcanoes in the northern Cascade Range. It was established in the summer of 1980, after the eruption of Mount St. Helens . [ 2 ]
Gardner at Mount St. Helens in 2004. Cynthia A. Gardner is an American geologist and volcanologist noted for her work on Mount St. Helens. [1] [2] She was the acting Scientist-in-Charge (SIC) of the Cascades Volcano Observatory during the 2004 volcanic reawakening at Mount St. Helens, and officially served as SIC from 2005 to 2010—the first female to fill the role. [3]
Recent drilling into the Pemberton Valley bed encountered remnants of a debris flow that had traveled 50 km (31 mi) from the volcano shortly before it last erupted 2,350 years ago. About 1,000,000,000 cubic metres (0.24 cu mi) of rock and sand extended over the width of the valley.
USGS Cascades Volcano Observatory geophysicist Rebecca Kramer works on station PR05, part of the Mount Rainier lahar detection network. The system has been upgraded and expanded since it was first ...
Montgomery-Brown, an expert on the Long Valley Caldera who is now with the USGS' Cascades Volcano Observatory, said the most recent episode of increased earthquake activity in the area began in ...
A volcano observatory is an institution that conducts research and monitoring of a volcano. Each observatory provides continuous and periodic monitoring of the seismicity , other geophysical changes, ground movements, volcanic gas chemistry, and hydrologic conditions and activity between and during eruptions .
It is monitored by the Pacific Northwest Seismic Network and the Cascades Volcano Observatory via a seismic station on the southwest flank of the mountain. [47] During the month of September of 2024, the U.S. Geological Survey Cascades Volcano Observatory recorded six earthquakes ranging in magnitudes 0.9 to 2.0. With a normal rate of one ...
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