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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 ]
The Cascade Volcanoes ... Lassen Volcanic Center Rockland Tephra 610,000 7 130 326.7 [10] [11] Mount Baker Volcanic Field Lake Tapps Tephra 1,149,000 7
This is a list of Cascade volcanoes, i.e. volcanoes formed as a result of subduction along the Cascadia subduction zone in the Pacific Northwest of North America. The volcanoes are listed from north to south, by province or state: British Columbia , Washington , Oregon , and California .
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 .
Location in Oregon relative to other major volcanoes. The major landmark for the Rogue River Valley, [4] Mount McLoughlin reaches an elevation of 9,493 feet (2,893 m). [1] The tallest volcano in between Mount Shasta — located 70 miles (110 km) to the south [5] — and South Sister 120 miles (190 km) to the north, it lies in the Cascade Range, in the southern portion of the U.S. state of ...
A “fascinating” eruption is approaching as a sleeping giant underwater volcano stirs with seismic activity near America’s west coast. The seismic activity of Axial Seamount, a submerged ...
The Cascade Range or Cascades is a major mountain range of western North America, extending from southern British Columbia through Washington and Oregon to Northern California. It includes both non-volcanic mountains, such as many of those in the North Cascades, and the notable volcanoes known as the High Cascades.
Since 2008, the volcano has averaged about 11 earthquakes per month. While swarms of earthquakes occurred in the late 1980s and early 1990s, none directly led to volcanic eruptions.