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Mount Baker volcan

stratovolcan 3285 m / 10,777 ft
Washington, USA (mainland exept Alaska), 48.78°N / -121.81°W
Condition actuelle: normal / en sommeil (1 sur 5)
Mount Baker webcams / données en temps réel | Reports
Mount Baker livres
Style éruptif tipique: Explosive
Eruptions du volcan Mount Baker: 1884(?), 1880, 1870, 1869(?), 1867(?), 1865(?), 1863, 1860(?), 1859-60, 1858, 1856(?),
1854, 1852-53, 1850(?), 1846?, 1843, 1820(?), 1792 No recent earthquakes
HeureMag. / DepthDistanceLocation
Mt Baker 50 km east of Bellingham, Washington, is the northernmost of Washington's volcanoes and one of the lesser known ones in the Cascade Range.
Mt Baker Volcano has been very active during the last centuries, but has been in repose now for more than 130 years.
Early settlers in the Puget Sound region observed 19th-century activity, which consisted of relatively small phreatic eruptions. Sherman Crater, the historically active crater immediately south of the summit, started to emit steam since 1975, but no other signs suggest a reawakening in the near future.
The main hazard from Mt Baker are lahars, caused by melting of glacial ice covering the upper slopes. Baker is drained in the north by North Fork Nooksack River, in the west by Middle Fork Nooksack River, and east by Baker River. These valley are at risk of such lahars in case of a new eruption.
The eruption in 1843 killed fish in Baker River, ignited forest and caused minor ash fall in nearby areas. Steam emissions continued at the Sherman Crater and Dorr fumarole field on the north flank until the 1940's and 1950's.

Introduction:

Mount Baker is an andesitic stratovolcano constructed above the east flank of an older eroded volcano (Black Buttes volcano) and SW of the early Pleistocene 4.5 x 8 km rhyodacitic Kulshan caldera.
The Schreibers Meadow cinder cone on the SE flank erupted about 9800 years ago. All other historic activity within the past 10,000 years seem to have taken place on the summit vent. A major magmatic eruption at Mount Baker occurred about 6500 years ago. It was followed by caldera collapse and left large lahar deposits in the Nooksack river valley.


Derniers images satellite


See also: Sentinel hub | Landsat 8
 

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