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The scale is open-ended with the largest eruptions in history given a magnitude of 8. A value of 0 is given for non-explosive eruptions, defined as less than 10,000 m 3 (350,000 cu ft) of tephra ejected; and 8 representing a supervolcanic eruption that can eject 1.0 × 10 12 m 3 (240 cubic miles) of tephra and have a cloud column height of over ...
Pages in category "Bodies of water of Madison, Wisconsin" The following 5 pages are in this category, out of 5 total. This list may not reflect recent changes. M.
Mafic volcanic rocks overlie quartzite in the Powder Mill Group and Bessemer, which begin northeast of Hayward, Wisconsin and extend northeast, meeting the string of intrusive complexes. From as far south as Polk County northeast through Burnette, Washburn, Bayfield and much of Douglas counties are the widespread basalt flows of the Chengwatana ...
Following is a list of dams and reservoirs in Wisconsin. All major dams are linked below. The National Inventory of Dams defines any "major dam" as being 50 feet (15 m) tall with a storage capacity of at least 5,000 acre-feet (6,200,000 m 3 ), or of any height with a storage capacity of 25,000 acre-feet (31,000,000 m 3 ).
Dispersal index is a parameter in volcanology. The dispersal index D {\displaystyle D} was defined by George P. L. Walker in 1973 as the surface area covered by an ash or tephra fall, where the thickness is equal or more than 1/100 of the thickness of the fall at the vent. [ 1 ]
Mackenzie, Muschalik & Broesche (2021) provided comments on the 2018 report in three separately authored sections. [4] Broesche believes that Yellowstone should be ranked higher due to the size of the volcano and the popularity of Yellowstone National Park, and Muschalik considers Mount Rainier to be just as dangerous as Kilauea due to its proximity to large population centers in Washington.
The ash fall created some temporary major problems with transportation, sewage disposal, and water treatment systems. Visibility was greatly decreased during the ash fall, closing many highways and roads. Interstate 90 from Seattle to Spokane was closed for a week and a half. Air travel was disrupted for between a few days and two weeks, as ...
The Trophic State Index scale also helps with these classifications. If a lake scores a TSI of above 50 it will be considered hypereutrophic. Lake Koshkonong has a TSI score of 67. [9] Algal blooms can result in high levels of blue-green algae which can be harmful to humans and pets under certain circumstances. Blue-green algae has been found ...
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