Tag Archive | "mount st. helens"

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Volcano Watch: Legacy of the Mount St. Helens 1980 eruption still defies perfect solution

Thirty-seven years after the eruption of Mount St. Helens scientists, engineers, land managers, and Federal, State, and County officials are grappling with the challenge on how to prevent potentially massive downstream flooding from Spirit Lake, located at the base of the volcano.

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Volcano Watch: A geologist remembers the Mount St. Helens eruption 37 years ago

Nearly half a mile wide, the column of ash and volcanic gas rose from the crater to a height of more than 24 km (80,000 ft).

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This portable “power” platform is designed to be slung by helicopter to temporary monitoring sites on Hawaiian volcanoes. The platform is being used at Webcam sites and at Kïlauea’s summit to measure activity of the lava lake in Halema‘uma‘u Crater—a continuously recording gravity meter and an experimental camera for measuring sulfur dioxide gas (shown here). The platform can also be used for other types of monitoring instruments. Photo courtesy of USGS/HVO

Volcano Watch: Portable instrument platforms enable rapid deployment of monitoring stations

Cascades Volcano Observatory scientists designed and built self-contained, portable units that could be slung into place by helicopter, without needing people to work at the site. Nicknamed “spiders” several were placed on the old dome of Mount St. Helens.

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