[17][18][19] In one version of Balch's story, the two sons of the Great Spirit Sahale fell in love with the beautiful maiden Loowit, who could not decide which to choose. Mount Hood is a potentially active stratovolcano in the Cascade Volcanic Arc.It was formed by a subduction zone on the Pacific coast and rests in the Pacific Northwest region of the United States.It is located about 50 mi (80 km) east-southeast of Portland, on the border between Clackamas and Hood River counties. contacts. With a fiscal year 2023 budget of $9.5 billion, NSF funds reach all 50 states through grants to nearly 2,000 colleges, universities and institutions. An official website of the United States government. If there is evidence for magma beneath the ground for example, as indicated by magma-related seismicity and/or ground deformation, or by an active hydrothermal system then the volcano should be considered active but currently dormant, regardless of the time since its last eruption. Volcano Hazards in the Mount Hood Region, Oregon, U.S. Geological Survey Open-File Small lahars such as this occur every few years at The rescue season on Mount Hood began just four days before Stevens's fall, on January 22. . The hotter magma from deeper down warms the cooler magma stored at a 4-5 kilometer depth, making it possible for both magmas to mix and be transported to the surface to produce an eruption. At the river's mouth, where the town of Hood Lahars are often associated with eruptive activity, but they can also be Our stories may be republished online or in print under Creative Commons license CC BY-NC-ND 4.0. Mike's area of specialization is volcano geodesy, which emphasizes the surface deformation and gravity fields associated with volcanic activity. Scientists Geology and History Summary for Mount Hood - USGS The resulting debris avalanche transformed into a lahar that The time it takes to liquefy and potentially erupt, however, is surprisingly short--perhaps as little as a couple of months. "For Mount Hood, the threshold seems to be about 750 degrees (C)--if it warms up just 50 to 75 degrees above that, it greatly decreases the viscosity of the magma and makes it easier to mobilize.". The "Time" and "Depth" determines whether earthquake age or depth are used to color the symbol. Andy Fell, UC-Davis, (530) 752-4533, email: ahfell@ucdavis.edu, Related WebsitesNSF Award: Collaborative Research: Tectonic Links, Magma Fluxes, and Single Mineral Geochemistry in Plutonic Systems From 5-30 km Depth, Cascades Core, Washington: http://www.nsf.gov/awardsearch/showAward?AWD_ID=0948616&HistoricalAwards=falseNSF Award: Collaborative Research: Timescales of Crystal Residence and Magma Mixing at Mount Hood, Oregon: http://www.nsf.gov/awardsearch/showAward?AWD_ID=0838389&HistoricalAwards=falseNSF News: Triggers of Volcanic Eruptions in Oregon's Mount Hood Investigated: http://www.nsf.gov/news/news_summ.jsp?org=NSF&cntn_id=117434&preview=false. Mount Hood was first seen by European explorers in 1792 and is believed to have maintained a consistent summit elevation, varying by no more than a few feet due to mild seismic activity. Risk in the Cascades, Volcano Hazards in the Mount Hood Region, Oregon, U.S. GEOLOGICAL SURVEYREDUCING THE RISK FROM VOLCANO Volcanologists use that term as shorthand for "potentially active," so a "dormant" volcano is one that is not erupting now, but that is considered "active" because it could erupt in the future. Since Instagram: instagram.com/nsfgov, Geoscientist Adam Kent considers results of studies of magma beneath Oregon's Mount Hood. The least humid month is July (32.3% relative humidity), and the most humid month is December (72.6%).
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