Cascades Volcano Observatory | U.S. Geological Survey (original) (raw)
News
Publications
August 25, 2022
Can lava flow like water? Assessing applications of critical flow theory to channelized basaltic lava flows
Flowing lava and water have dramatically different physical properties but can form similar hydraulic structures, including undular hydraulic jumps, or standing wave trains. In water flows, undular hydraulic jumps are evidence of critical flow (Froude number ∼1) and open-channel hydraulic theory provides a powerful tool for estimating flow depth and velocity. Monitoring these parameters in an acti
Authors
Hannah R. Dietterich, Gordon E. Grant, Becky Fasth, J. J. Major, Katharine V. Cashman
Science
December 7, 2023
Columbia River Basalt Group Stretches from Oregon to Idaho
The Columbia River Basalt Group (CRBG) is the youngest, smallest and one of the best-preserved continental flood basalt province on Earth, covering over 210,000 km2 of mainly eastern Oregon and Washington, western Idaho, and part of northern Nevada.
December 7, 2023
Columbia River Basalt Group Stretches from Oregon to Idaho
The Columbia River Basalt Group (CRBG) is the youngest, smallest and one of the best-preserved continental flood basalt province on Earth, covering over 210,000 km2 of mainly eastern Oregon and Washington, western Idaho, and part of northern Nevada.
December 7, 2023
The Boring Volcanic Field — Hills of the Portland Basin
Non-enthusiasts may consider the Boring Volcanic Field aptly named, but the title comes from its location, not from a lack of interesting characteristics.
December 7, 2023
Monitoring Cascade Volcanoes
Active volcanoes are complex natural systems, and understanding a volcano's behaviors requires the attention of specialists from many science disciplines. It demands a combination of current knowledge about magma systems, tectonic plate motion, volcano deformation, earthquakes, gases, chemistry, volcano histories, processes, and hazards.
December 7, 2023
Monitoring Cascade Volcanoes
Active volcanoes are complex natural systems, and understanding a volcano's behaviors requires the attention of specialists from many science disciplines. It demands a combination of current knowledge about magma systems, tectonic plate motion, volcano deformation, earthquakes, gases, chemistry, volcano histories, processes, and hazards.