Cascades Volcano Observatory
Encyclopedia
The David A. Johnston
Cascades Volcano Observatory is the volcano observatory
that monitors volcanoes in the Cascade Range
. It is part of the United States Geological Survey
, a scientific agency of the United States government. It is located in Vancouver, Washington
in the Portland, Oregon
metropolitan area.
David A. Johnston
David Alexander Johnston was an American volcanologist with the United States Geological Survey who was killed by the 1980 eruption of Mount St. Helens in Washington. One of the principal scientists on the monitoring team, Johnston died while manning an observation post about 6 miles from the...
Cascades Volcano Observatory is the volcano observatory
Volcano observatory
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...
that monitors volcanoes in the Cascade Range
Cascade Range
The Cascade Range 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 the North Cascades, and the notable volcanoes known as the High Cascades...
. It is part of the United States Geological Survey
United States Geological Survey
The United States Geological Survey is a scientific agency of the United States government. The scientists of the USGS study the landscape of the United States, its natural resources, and the natural hazards that threaten it. The organization has four major science disciplines, concerning biology,...
, a scientific agency of the United States government. It is located in Vancouver, Washington
Vancouver, Washington
Vancouver is a city on the north bank of the Columbia River in the U.S. state of Washington. Incorporated in 1857, it is the fourth largest city in the state with a 2010 census population of 161,791 as of April 1, 2010...
in the Portland, Oregon
Portland, Oregon
Portland is a city located in the Pacific Northwest, near the confluence of the Willamette and Columbia rivers in the U.S. state of Oregon. As of the 2010 Census, it had a population of 583,776, making it the 29th most populous city in the United States...
metropolitan area.