Dosiero:Pyramid Lake, Nevada (2) (4134281009).jpg
![Dosiero:Pyramid Lake, Nevada (2) (4134281009).jpg](http://upload.wikimedia.org/wikipedia/commons/thumb/b/bb/Pyramid_Lake%2C_Nevada_%282%29_%284134281009%29.jpg/800px-Pyramid_Lake%2C_Nevada_%282%29_%284134281009%29.jpg)
Bildo en pli alta difino ((2 816 × 2 112 rastrumeroj, grandeco de dosiero: 3,43 MB, MIME-tipo: image/jpeg))
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Jen dosiero de la Wikimedia-Komunejo. La priskribo en ties priskriba paĝo estas montrata suben.
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Resumo
PriskriboPyramid Lake, Nevada (2) (4134281009).jpg |
English: Pyramid Lake is the geographic sink of the Truckee River Basin, 40 mi (64 km) northeast of Reno. Pyramid Lake is fed by the Truckee River, which is mostly the outflow from Lake Tahoe. The Truckee River enters Pyramid Lake at its southern end. Pyramid Lake has no outlet, with water leaving only by evaporation, or sub-surface seepage (an endorheic lake). The lake has about 10% of the area of the Great Salt Lake, but it has about 25% more volume. The salinity is approximately 1/6 that of sea water. Although clear Lake Tahoe forms the headwaters that drain to Pyramid Lake, the Truckee River delivers more turbid waters to Pyramid Lake after traversing the steep Sierra terrain and collecting moderately high silt-loaded surface runoff.
A remnant of the Pleistocene Lake Lahontan (~890 feet deep), the lake area was inhabited by the 19th-century Paiute, who used the Tui chub and Lahontan cutthroat trout from the lake(the former is now endangered and the latter is threatened). The lake was first mapped in 1844 by John C. Frémont, the American discoverer of the lake who also gave it its English title. In the 19th century two battles were fought near the lake, major actions in the Paiute War. In the 1960s a marker was placed commemorating these battles. Because of water diversion beginning in 1905 by Derby Dam, the lake's existence was threatened, and the Paiute sued the Department of the Interior. By the mid-1970s, the lake had lost 80 feet of depth, and according to Paiute fisheries officials, the life of the lake was seriously under threat. Pyramid Lake is located in southeastern Washoe County in western Nevada. It is in an elongated intermontane basin between the Lake Range on the east, the Virginia Mountains on the west and the Pah Rah Range on the southwest. The Fox Range and the Smoke Creek Desert lie to the north. In a parallel basin to the east of the Lake Range is Winnemucca Lake now a dry lake bed. Prior to the construction of the Derby Dam in 1905 both lake levels stood at near 3,880 ft (1,180 m).[8] Following the dam completion the water levels dropped to 3,867 ft (1,179 m) and 3,853 ft (1,174 m) for Pyramid and Winnemucca respectively. In 1957 Pyramid Lake level was at 3,802 ft (1,159 m) and the dry Winnemucca Lake bed at 3,780 ft (1,150 m) had been dry since the 1930s. The lake is the largest remnant of ancient Lake Lahontan that covered much of northwestern Nevada at the end of the last ice age. Pyramid Lake was the deepest point in Lake Lahontan, reaching an estimated 890 feet (270 m) due to its low level relative to the surrounding basins. The name of the lake comes from the impressive cone or pyramid shaped tufa formations found in the lake and along the shores. The largest such formation, Anaho Island, is home to a large colony of American White Pelicans and is restricted for ecological reasons. Access to the Needles, another spectacular tufa formation at the northern end of the lake has also been restricted due to recent vandalism. Major fish species include the cui-ui lakesucker, which is endemic to Pyramid Lake, the Tui chub and Lahontan cutthroat trout (the world record cutthroat trout was caught in Pyramid Lake). The former is endangered, and the latter is threatened. Both species were of critical importance to the Paiute people in pre-contact times. en.wikipedia.org/wiki/Pyramid_Lake_(Nevada) en.wikipedia.org/wiki/Wikipedia:Text_of_Creative_Commons_... |
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Dato | ||||
Fonto | Pyramid Lake, Nevada (2) | |||
Aŭtoro | Ken Lund from Reno, Nevada, USA | |||
Ceteraj versioj |
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Pozicio de la fotilo | 39° 57′ 27,21″ No, 119° 36′ 27,85″ Ok ![]() | Tiu cxi bildo kaj pliaj sur OpenStreetMap | ![]() |
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This image was originally posted to Flickr by Ken Lund at https://flickr.com/photos/75683070@N00/4134281009. It was reviewed on la 5-a de decembro 2015 by FlickreviewR and was confirmed to be licensed under the terms of the cc-by-sa-2.0. |
la 5-a de decembro 2015
Titoloj
Eroj prezentitaj en ĉi tiu dosiero
montras
Iu valoro sen Vikidatumoj ero
25 nov. 2009
39°57'27.209"N, 119°36'27.846"W
captured with angla
Canon PowerShot A540 angla
Dosierhistorio
Alklaku iun daton kaj horon por vidi kiel la dosiero tiam aspektis.
Dato/Horo | Bildeto | Grandecoj | Uzanto | Komento | |
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nun | 21:57, 5 dec. 2015 | ![]() | 2 816 × 2 112 (3,43 MB) | INeverCry | Transferred from Flickr via Flickr2Commons |
Dosiera uzado
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Metadatumoj
Ĉi tiu dosiero entenas aldonan informon, probable aldonitan de la diĝita fotilo aŭ skanilo uzita por ĝin krei aŭ diĝitigi. Se la dosiero estas modifita disde sia originala stato, detaloj povas ne ĝuste priskribi tiun modifitan bildon.
Fabrikejo de fotilo | Canon |
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Speco de fotilo | Canon PowerShot A540 |
Tempo de ekspono | 1/1 000 sek (0,001) |
F-nombro | f/4 |
Dato kaj tempo de datuma generado | 12:33, 25 nov. 2009 |
Fokusa longo de lenso | 5,8 mm |
Orientiĝo | Normala |
Horizontala distingivo | 180 dpi |
Vertikala distingivo | 180 dpi |
Dato kaj tempo de dosiera ŝanĝo | 12:33, 25 nov. 2009 |
Y kaj C situado | Centrigita |
Exif-versio | 2.2 |
Dato kaj tempo de ciferecigado | 12:33, 25 nov. 2009 |
Signifo de ĉiu kompono |
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Reĝimo de bilda densigado | 5 |
APEX-Rapido de obturatoro | 9,96875 |
Aperturo | 4 |
Ekspona emo | −0,66666666666667 |
Maksimuma pejzaĝa diafragmo | 2,75 APEX (f/2,59) |
Mezurila reĝimo | Skemo |
Fulmilo | Fulmilo ne ekbruliĝis, deviga dampado de fulmilo, reĝimo por ruĝokula redukcio |
Subtena Flashpix-versio | 1 |
Kolor-spaco | sRGB |
X distingivo de fokusa ebeno | 12 515,555555556 |
Y distingivo de fokusa ebeno | 12 497,041420118 |
Distingivo-unuo de fokusa ebeno | coloj |
Metodo de sensado | Sensilo de zono de unukromataj koloroj |
Dosiera fonto | Cifereca senmova fotilo |
Propra foto-rivelado | Norma proceso |
Ekspona reĝimo | Permana ekspono |
Blanka balanciĝo | Aŭtomata blank-egaleco |
Cifereca zumproporcio | 1 |
Scenkapta speco | Pejzaĝo |