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1 Shore length is not a well-defined measure. Crater Lake (Klamath: Giiwas) [2] is a volcanic crater lake in south-central Oregon in the Western United States.
Crater Lake is often referred to as the seventh-deepest lake in the world, but this former listing excludes the approximately 3,000-foot (910 m) depth of subglacial Lake Vostok in Antarctica, which resides under nearly 13,000 feet (4,000 m) of ice, and the recent report of a 2,740-foot (840 m) maximum depth for Lake O'Higgins/San Martin ...
The Watchman Lookout Station is located 8,025 feet above sea level on Watchman Peak, a high point on the western rim above Crater Lake. [5] [6] Watchman Peak was named by William Gladstone Steel in 1886 when he brought a survey team to Crater Lake to measure its depth. [7]
Crater Lake actually started as a mountain, Mount Mazama. A volcanic eruption roughly 7,700 years ago caused the mountain to collapse inward over time, forming a volcanic crater, the park says.
Lake shorelines are fractal. [7] This means that measurements of shore length are longer when measured on high-resolution maps compared to low-resolution maps. [9] [10] Therefore, a lake's shoreline development index will be greater when calculated based on shorelines measured from high-resolution maps compared to low-resolution maps. [10]
VEI and ejecta volume correlation. The volcanic explosivity index (VEI) is a scale used to measure the size of explosive volcanic eruptions.It was devised by Christopher G. Newhall of the United States Geological Survey and Stephen Self in 1982.
[23] [24] To measure Secchi depth, a white or black-and-white disk is mounted on a pole or line and lowered slowly down in the water. The depth at which the disk is no longer visible is taken as a measure of the transparency of the water. [25] [26] Secchi depth is most useful as a measure of transparency or underwater visibility.
Wizard Island was created after Mount Mazama, a large complex volcano, erupted violently approximately 7,700 years ago, forming its caldera which now contains Crater Lake. Following the cataclysmic caldera-forming eruption, which left a hole about 4,000 feet (1,200 m) deep where the mountain had once stood, a series of smaller eruptions over ...