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The Envisat satellite is a large, inactive satellite with a mass of 8,211 kg (18,102 lb) that orbits at 785 km (488 mi), an altitude where the debris environment is the greatest—two catalogued objects can be expected to pass within about 200 m (660 ft) of Envisat every year [40] —and likely to increase. Don Kessler predicted in 2012 that it ...
Highest point; Elevation: 12,335 ft (3,760 m) NAVD 88 [1] Prominence: 450 ft (140 m) [1] Coordinates: 2]: Geography; Location: Siskiyou County, California, U.S.: Parent range: Cascade Range: Topo map: USGS Mount Shasta: Geology; Mountain type(s): Stratovolcano, satellite cone: Volcanic arc: Cascade Volcanic Arc: Last eruption: 7420 BCE ± 300 years [3]: Climbing; Easiest route: Rock and ice ...
The Cascade volcanoes have had more than 100 eruptions over the past few thousand years, many of them explosive eruptions. [21] However, certain Cascade volcanoes can be dormant for hundreds or thousands of years between eruptions, and therefore the great risk caused by volcanic activity in the regions is not always readily apparent.
The Cascade Range or Cascades 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 many of those in the North Cascades , and the notable volcanoes known as the High Cascades .
The Cascade Volcanic arc is located approximately 100 km inland from the coast, and forms a north-to-south chain of peaks that average over 3,000 m (10,000 ft) in elevation. [3] The major peaks from south to north include: Lassen Peak and Mount Shasta (California) Crater Lake (Mazama), Three Sisters, Mount Jefferson, Mount Hood (Oregon)
This is a list of Cascade volcanoes, i.e. volcanoes formed as a result of subduction along the Cascadia subduction zone in the Pacific Northwest of North America. The volcanoes are listed from north to south, by province or state: British Columbia , Washington , Oregon , and California .
The David A. Johnston Cascades Volcano Observatory (CVO) is a volcano observatory in the US that monitors volcanoes in the northern Cascade Range. It was established in the summer of 1980, after the eruption of Mount St. Helens . [ 2 ]
The Cascade-Sierra province is a physiographic region of mountains in the western United States, east and adjacent to Pacific Border province and west and adjacent to the Basin and Range Province (in the south) and Columbia Plateau Province (in the north).