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Chuitna River (Alaska)
The Chuitna River, sometimes called the Chuit,Chuitna River Aerial Photo Photo courtesy of the Alaska Center for the Environment http://www.akcenter.org emerges from a broad expanse of forest and wetlands west of and drains into . The river and its tributaries support all five species of Pacific salmon, Dolly ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Anchorage, Alaska
Anchorage () is the largest city in the U.S. state of Alaska by population. With a population of 291,247 in 2020, it contains nearly 40% of the state's population. The Anchorage metropolitan area, which includes Anchorage and the neighboring Matanuska-Susitna Borough, had a population of 398,328 in 2020, accounting for more than half the state's population. At of land area, the city is the fourth-largest by area in the United States and larger than the smallest state, Rhode Island, which has . Anchorage is in Southcentral Alaska, at the terminus of the Cook Inlet, on a peninsula formed by the Knik Arm to the north and the Turnagain Arm to the south. In September 1975, the City of Anchorage merged with the Greater Anchorage Area Borough, creating the Municipality of Anchorage. The municipal city limits span , encompassing the urban core, a joint military base, several outlying communities, and almost all of Chugach State Park. Because of this, less than 10% of the Municipalit ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cook Inlet
Cook Inlet ( tfn, Tikahtnu; Sugpiaq: ''Cungaaciq'') stretches from the Gulf of Alaska to Anchorage in south-central Alaska. Cook Inlet branches into the Knik Arm and Turnagain Arm at its northern end, almost surrounding Anchorage. On its southern end, it merges with Shelikof Strait, Stevenson Entrance, Kennedy Entrance and Chugach Passage. The Cook Inlet watershed is the most populated watershed in Alaska. The watershed covers about of southern Alaska, east of the Aleutian Range, south and east of the Alaska Range, receiving water from its tributaries, the Knik River, the Little Susitna River, and the Susitna and Matanuska rivers. The watershed includes the drainage areas of Denali (formerly named Mount McKinley). Within the watershed there are several national parks and the active volcano Mount Redoubt, along with three other historically active volcanoes. Cook Inlet provides navigable access to the port of Anchorage at the northern end, and to the smaller Homer port fu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Oncorhynchus
''Oncorhynchus'' is a genus of fish in the family Salmonidae; it contains the Pacific salmon and Pacific trout. The name of the genus is derived from the Greek ὄγκος (ónkos, “lump, bend”) + ῥύγχος (rhúnkhos, “snout”), in reference to the hooked snout (the "kype") that the males develop during mating season. Range Salmon and trout with native ranges in waters draining to the Pacific Ocean are members of the genus. Their range extends from Beringia southwards, roughly to Taiwan in the west and Mexico to the east. In North America, some subspecies of '' O. clarkii'' are native in the Rocky Mountains and Great Basin, while others are native to the Rio Grande and western tributaries of the Mississippi River Basin which drain to the Gulf of Mexico, rather than to the Pacific. Several species of ''Oncorhynchus'' have been introduced into non-native waters around the globe, establishing self-sustaining wild populations. The six Pacific salmons of ''Oncorhync ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Salvelinus Malma
The Dolly Varden trout (''Salvelinus malma'') is a species of salmonid fish native to cold-water tributaries of the Pacific Ocean in Asia and North America. It belongs to the genus ''Salvelinus'', or true chars, which includes 51 recognized species, the most prominent being the brook, lake and bull trout, as well as Arctic char. Although many populations are semi-anadromous, fluvial and lacustrine populations occur throughout its range. It is considered by taxonomists as part of the ''Salvelinus alpinus'' or Arctic char complex, as many populations of bull trout, Dolly Varden trout and Arctic char overlap. Taxonomy The scientific name of the Dolly Varden is ''Salvelinus malma''. The species was originally named by German naturalist and taxonomist Johann Julius Walbaum in 1792 based on type specimens from the Kamchatka Peninsula in Siberia. The name ''malma'' was based on Russian , the local colloquial name for the fish. The Dolly Varden trout is considered part of the ''S. al ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Alaska Range
The Alaska Range is a relatively narrow, 600-mile-long (950 km) mountain range in the southcentral region of the U.S. state of Alaska, from Lake Clark at its southwest endSources differ as to the exact delineation of the Alaska Range. ThBoard on Geographic Namesentry is inconsistent; part of it designates Iliamna Lake as the southwestern end, and part of the entry has the range ending at the Telaquana and Neacola Rivers. Other sources identify Lake Clark, in between those two, as the endpoint. This also means that the status of the Neacola Mountains is unclear: it is usually identified as the northernmost subrange of the Aleutian Range, but it could also be considered the southernmost part of the Alaska Range. to the White River in Canada's Yukon Territory in the southeast. The highest mountain in North America, Denali, is in the Alaska Range. It is part of the American Cordillera. The Alaska range is one of the higher ranges in the world after the Himalayas and the Andes. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tyonek, Alaska
Tyonek or Present / New Tyonek ( Dena'ina: ''Qaggeyshlat'' - ″little place between toes") is a census-designated place (CDP) in Kenai Peninsula Borough in the U.S. state of Alaska. As of the 2020 census the population was 152, down from 171 in 2010. In 1973, the community formed the Tyonek Native Corporation (TNC) under the Alaska Native Claims Settlement Act and is federally recognized. History A Dena'ina Alaska Native village at Tyonek was noted by the explorer James Cook in 1778. The Lebedev-Lastochkin Company, a Russian fur trade venture, maintained a small trapping station on the site of Tyonek.Solojova, Katerina and Aleksandra Vovnyanko. ''The Rise and Decline of the Lebedev-Lastochkin Company: Russian Colonization of South Central Alaska, 1787-1798.'' The Pacific Northwest Quarterly 90, No. 4 (1999), pp. 191-205. A detachment of the Vancouver Expedition under Joseph Whidbey visited the trading post in May 1794. Whidbey found that the LLC maintained "one large house, a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Beluga, Alaska
Beluga is a census-designated place (CDP) in Kenai Peninsula Borough, Alaska, United States. The population was 20 at the 2010 census, down from 32 in 2000. Geography Beluga is located in the northern part of Kenai Peninsula Borough at (61.133962, -151.164741), on the northwest side of Cook Inlet. The community is on the Alaskan mainland rather than the Kenai Peninsula proper. It is bordered to the north by Matanuska-Susitna Borough and to the south by the Tyonek CDP. Access is by air or by water, as the road network is local only. According to the United States Census Bureau, the CDP has a total area of , of which are land and , or 0.72%, are water. The southern border of the CDP is the Chuitna River, and the Beluga River flows through the northern part of the CDP. Demographics Beluga first appeared on the 2000 U.S. Census as a census-designated place (CDP). As of the census of 2000, there were 32 people, 13 households, and 7 families residing in the CDP. The population dens ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tertiary
Tertiary ( ) is a widely used but obsolete term for the geologic period from 66 million to 2.6 million years ago. The period began with the demise of the non-avian dinosaurs in the Cretaceous–Paleogene extinction event, at the start of the Cenozoic Era, and extended to the beginning of the Quaternary glaciation at the end of the Pliocene Epoch. The time span covered by the Tertiary has no exact equivalent in the current geologic time system, but it is essentially the merged Paleogene and Neogene periods, which are informally called the Early Tertiary and the Late Tertiary, respectively. The Tertiary established the Antarctic as an icy island continent. Historical use of the term The term Tertiary was first used by Giovanni Arduino during the mid-18th century. He classified geologic time into primitive (or primary), secondary, and tertiary periods based on observations of geology in Northern Italy. Later a fourth period, the Quaternary, was applied. In the early d ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sedimentary Rocks
Sedimentary rocks are types of rock that are formed by the accumulation or deposition of mineral or organic particles at Earth's surface, followed by cementation. Sedimentation is the collective name for processes that cause these particles to settle in place. The particles that form a sedimentary rock are called sediment, and may be composed of geological detritus (minerals) or biological detritus (organic matter). The geological detritus originated from weathering and erosion of existing rocks, or from the solidification of molten lava blobs erupted by volcanoes. The geological detritus is transported to the place of deposition by water, wind, ice or mass movement, which are called agents of denudation. Biological detritus was formed by bodies and parts (mainly shells) of dead aquatic organisms, as well as their fecal mass, suspended in water and slowly piling up on the floor of water bodies (marine snow). Sedimentation may also occur as dissolved minerals precipitate from ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chuitna Coal Project
The Chuitna Coal Project was a proposed coal strip mine that, if granted state and federal permits, would have been built about southwest of Anchorage, Alaska, in an area known as the Beluga Coal Fields near the Chuitna River and the small communities of Tyonek and Beluga in upper Cook Inlet. Proposal The Chuitna Coal Project was a proposal of PacRim LP, a Delaware-based corporation owned by the Texas-based energy company Petro-Hunt LLC. PacRim holds a state lease to of Alaska Mental Health Trust property where an estimated 1 billion metric tons of low-sulfur, sub-bituminous coal was thought to exist. Proven reserves are reported to be 771 million tons. Cook Inlet Region, Inc.">Cook Inlet Region, Inc. (CIRI), and private owners. The state of Alaska owns about (including mental health lands), and coal leases have been issued on some , including the leased to PacRim. The Susitna Flats Wildlife Refuge are near the former project zone to the northeast and the Trading Bay Wildlif ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sub-bituminous
Sub-bituminous coal is a lower grade of coal that contains 35–45% carbon. The properties of this type are between those of lignite, the lowest grade of coal, and those of bituminous coal, the second-highest grade of coal. Sub-bituminous coal is primarily used as a fuel for steam-electric power generation. Properties Sub-bituminous coals may be dull, dark brown to black, soft and crumbly at the lower end of the range, to bright jet-black, hard, and relatively strong at the upper end. They contain 15-30% inherent moisture by weight and are non-coking (undergo little swelling upon heating). The heat content of sub-bituminous coals range from 8300 to 11,500 BTu/ lb or 19.3 to 26.7 M J/ kg. Their relatively low density and high water content renders some types of sub-bituminous coals susceptible to spontaneous combustion if not packed densely during storage in order to exclude free air flow. Reserves A major source of sub-bituminous coal in the United States is the Powder R ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
America's Most Endangered Rivers
America's Most Endangered Rivers is a list of threatened rivers in the United States compiled by the nonprofit group American Rivers. First published in 1984, the annual list spotlights ten threatened rivers–rivers that are facing environmental degradation Environmental degradation is the deterioration of the environment (biophysical), environment through depletion of resources such as quality of air, water and soil; the destruction of ecosystems; habitat destruction; the extinction of wildlife; an ... due to existing or proposed development projects. The list is intended to build public awareness and spur action toward addressing specific environmental issues. Lists 2023 rivers On April 18, 2023, American Rivers announced its ten most endangered rivers of 2023. 2022 rivers On April 19, 2022, American Rivers announced its ten most endangered rivers of 2022. 2021 rivers On April 13, 2021, American Rivers announced its ten most endangered rivers of 2021. 2020 river ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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