California - Death Valley National Park

Dante's View

 

Death Valley National Park is an American national park that straddles the California–Nevada border, east of the Sierra Nevada. The park boundaries include Death Valley, the northern section of Panamint Valley, the southern section of Eureka Valley and most of Saline Valley. The park occupies an interface zone between the arid Great Basin and Mojave deserts, protecting the northwest corner of the Mojave Desert and its diverse environment of salt-flats, sand dunes, badlands, valleys, canyons and mountains. Death Valley is the largest national park in the contiguous United States, as well as the hottest, driest and lowest of all the national parks in the United States. It contains Badwater Basin, the second-lowest point in the Western Hemisphere at 282 feet (86 m) below sea level. More than 93% of the park is a designated wilderness area. The park is home to many species of plants and animals that have adapted to this harsh desert environment including creosote bush, Joshua tree, bighorn sheep, coyote, and the Death Valley pupfish, a survivor from much wetter times. UNESCO included Death Valley as the principal feature of its Mojave and Colorado Deserts Biosphere Reserve in 1984.

 

A series of Native American groups inhabited the area from as early as 7000 BC, most recently the Timbisha around 1000 AD who migrated between winter camps in the valleys and summer grounds in the mountains. A group of European Americans, trapped in the valley in 1849 while looking for a shortcut to the gold fields of California, gave the valley its name, even though only one of their group died there. Several short-lived boom towns sprang up during the late 19th and early 20th centuries to mine gold and silver. The only long-term profitable ore to be mined was borax, which was transported out of the valley with twenty-mule teams. The valley later became the subject of books, radio programs, television series, and movies. Tourism expanded in the 1920s when resorts were built around Stovepipe Wells and Furnace Creek. Death Valley National Monument was declared in 1933 and the park was substantially expanded and became a national park in 1994.

 

The natural environment of the area has been shaped largely by its geology. The valley is actually a graben with the oldest rocks being extensively metamorphosed and at least 1.7 billion years old. Ancient, warm, shallow seas deposited marine sediments until rifting opened the Pacific Ocean. Additional sedimentation occurred until a subduction zone formed off the coast. The subduction uplifted the region out of the sea and created a line of volcanoes. Later the crust started to pull apart, creating the current Basin and Range landform. Valleys filled with sediment and, during the wet times of glacial periods, with lakes, such as Lake Manly.

 

In 2013, Death Valley National Park was designated as a dark sky park by the International Dark-Sky Association.

 

Geographic setting

 

There are two major valleys in the park, Death Valley and Panamint Valley. Both of these valleys were formed within the last few million years and both are bounded by north-south-trending mountain ranges.[ These and adjacent valleys follow the general trend of Basin and Range topography with one modification: there are parallel strike-slip faults that perpendicularly bound the central extent of Death Valley. The result of this shearing action is additional extension in the central part of Death Valley which causes a slight widening and more subsidence there.

 

Uplift of surrounding mountain ranges and subsidence of the valley floor are both occurring. The uplift on the Black Mountains is so fast that the alluvial fans (fan-shaped deposits at the mouth of canyons) there are small and steep compared to the huge alluvial fans coming off the Panamint Range. Fast uplift of a mountain range in an arid environment often does not allow its canyons enough time to cut a classic V-shape all the way down to the stream bed. Instead, a V-shape ends at a slot canyon halfway down, forming a 'wine glass canyon. Sediment is deposited on a small and steep alluvial fan.

 

At 282 feet (86 m) below sea level at its lowest point,[Badwater Basin on Death Valley's floor is the second-lowest depression in the Western Hemisphere (behind Laguna del Carbón in Argentina), while Mount Whitney, only 85 miles (137 km) to the west, rises to 14,505 feet (4,421 m) and is the tallest mountain in the contiguous United States. This topographic relief is the greatest elevation gradient in the contiguous United States and is the terminus point of the Great Basin's southwestern drainage. Although the extreme lack of water in the Great Basin makes this distinction of little current practical use, it does mean that in wetter times the lake that once filled Death Valley (Lake Manly) was the last stop for water flowing in the region, meaning the water there was saturated in dissolved materials. Thus, the salt pans in Death Valley are among the largest in the world and are rich in minerals, such as borax and various salts and hydrates. The largest salt pan in the park extends 40 miles (64 km) from the Ashford Mill Site to the Salt Creek Hills, covering some 200 square miles (520 km2) of the valley floor. The best known playa in the park is the Racetrack, known for its moving rocks.

 

Climate

 

According to the Köppen climate classification system, Death Valley National Park has a hot desert climate (BWh). The plant hardiness zone at Badwater Basin is 9b with an average annual extreme minimum temperature of 27.3 °F (-2.6 °C).

 

Death Valley is the hottest and driest place in North America due to its lack of surface water and low relief. It is so frequently the hottest spot in the United States that many tabulations of the highest daily temperatures in the country omit Death Valley as a matter of course.

 

On the afternoon of July 10, 1913, the United States Weather Bureau recorded a high temperature of 134 °F (56.7 °C) at Greenland Ranch (now Furnace Creek) in Death Valley. This temperature stands as the highest ambient air temperature ever recorded at the surface of the Earth. (A report of a temperature of 58 °C (136.4 °F) recorded in Libya in 1922 was later determined to be inaccurate.) Daily summer temperatures of 120 °F (49 °C) or greater are common, as well as below freezing nightly temperatures in the winter. July is the hottest month, with an average high of 117 °F (47 °C) and an average low of 91 °F (33 °C). December is the coldest month, with an average high of 66 °F (19 °C) and an average low of 41 °F (5 °C). The record low is 15 °F (−9.4 °C). There are an average of 197.3 days annually with highs of 90 °F (32.2 °C) or higher and 146.9 days annually with highs of 100 °F (37.8 °C) or higher. Freezing temperatures of 32 °F (0 °C) or lower occur on an average of 8.6 days annually.

 

Several of the larger Death Valley springs derive their water from a regional aquifer, which extends as far east as southern Nevada and Utah. Much of the water in this aquifer has been there for many thousands of years, since the Pleistocene ice ages, when the climate was cooler and wetter. Today's drier climate does not provide enough precipitation to recharge the aquifer at the rate at which water is being withdrawn.

 

The highest range within the park is the Panamint Range, with Telescope Peak being its highest point at 11,049 feet (3,368 m). The Death Valley region is a transitional zone in the northernmost part of the Mojave Desert and consists of five mountain ranges removed from the Pacific Ocean. Three of these are significant barriers: the Sierra Nevada, the Argus Range, and the Panamint Range. Air masses tend to lose moisture as they are forced up over mountain ranges, in what climatologists call a rainshadow effect.

 

The exaggerated rain shadow effect for the Death Valley area makes it North America's driest spot, receiving about 1.5 inches (38 mm) of rainfall annually at Badwater, and some years fail to register any measurable rainfall. Annual average precipitation varies from 1.92 inches (49 mm) overall below sea level to over 15 inches (380 mm) in the higher mountains that surround the valley. When rain does arrive it often does so in intense storms that cause flash floods which remodel the landscape and sometimes create very shallow ephemeral lakes.

 

The hot, dry climate makes it difficult for soil to form. Mass wasting, the down-slope movement of loose rock, is therefore the dominant erosive force in mountainous areas, resulting in "skeletonized" ranges (mountains with very little soil on them). Sand dunes in the park, while famous, are not nearly as widespread as their fame or the dryness of the area may suggest. The Mesquite Flat dune field is the most easily accessible from the paved road just east of Stovepipe Wells in the north-central part of the valley and is primarily made of quartz sand. Another dune field is just 10 miles (16 km) to the north but is instead mostly composed of travertine sand. The highest dunes in the park, and some of the highest in North America, are located in the Eureka Valley about 50 miles (80 km) to the north of Stovepipe Wells, while the Panamint Valley dunes and the Saline Valley dunes are located west and northwest of the town, respectively. The Ibex dune field is near the seldom-visited Ibex Hill in the southernmost part of the park, just south of the Saratoga Springs marshland. All the latter four dune fields are accessible only via unpaved roads. Prevailing winds in the winter come from the north, and prevailing winds in the summer come from the south. Thus, the overall position of the dune fields remains more or less fixed.

 

There are rare exceptions to the dry nature of the area. In 2005, an unusually wet winter created a 'lake' in the Badwater Basin and led to the greatest wildflower season in the park's history. In October 2015, a "1000 year flood event" with over three inches of rain caused major damage in Death Valley National Park.

 

(Wikpedia)

 

Dante's View is a viewpoint terrace at 1,669 m (5,476 ft) height, on the north side of Coffin Peak, along the crest of the Black Mountains, overlooking Death Valley. Dante's View is about 25 km (16 mi) south of Furnace Creek in Death Valley National Park.

 

Viewpoint

 

From the Dante's View parking lot, visitors can take several paths, one of which leads to the very brink of the edge, offering a dramatic panoramic view. Another path leads north 320 m (350 yd) to a rest area with picnic tables. The best time to visit Dante's View is in the cooler morning hours, when the sun is in the east. Dante's View has a perfect view for night time star viewing with telescopes.

 

General

 

Dante's View provides a panoramic view of the southern Death Valley basin. To the south, the Owlshead Mountains, 30 km (19 mi) away can be seen, and to the north, the Funeral Mountains 50 km (31 mi) distant, are visible beyond Furnace Creek. To the West, across Badwater Basin, the Panamint Range rises dramatically to Telescope Peak. To the east is found the Greenwater Range. On very clear days, the highest and lowest points in the contiguous 48 states of the United States: Mount Whitney 4,421 m (14,505 ft) high and Badwater −86 m (−282 ft) can be seen.

 

A part of the Devil's Golf Course is to the west-northwest, where it appears like a great sparkling ocean - instead it is solid halite salt. The crust of salt is 1 to 2 meters (1.1 to 2.2 yd) thick and changes form after rain in the winter season dissolves the salt, to be recrystallized as the water evaporates.

to the west-northwest, directly under Dante's View, is the Badwater Basin.

west across the Badwater Basin, lies the Panamint Range, with Trail Canyon, Death Valley Canyon and Hanaupah Canyon visible. At the crest of the Panamints, Telescope Peak 3,367 m (11,047 ft) is 20 km (12 mi) distant.

to the south, the Owlshead Mountains.

east is seen the Great Basin ranges of Nevada.

 

Etymology

 

Dante's View is named from Dante Alighieri, who wrote the Divina Commedia (Divine Comedy), in which there are described the nine circles of Hell, the seven terraces of Purgatory and the nine spheres of Paradise.

 

In April 1926, some businessmen of the Pacific Coast Borax Company, informed of the touristic attractiveness of Death Valley, were trying to pick the best view of Death Valley. They had nearly chosen Chloride Cliff in the Funeral Mountains when the Deputy Sheriff of Greenwater, Charlie Brown, carried them from this peak a little distance to the Black Mountains. The group was immediately persuaded and promptly called this point Dante's View.

 

Geological

 

Dante's View is part of the Black Mountains, a part of Amargosa Range, that was geological Mesozoic volcanoes. These mountains were created when the surface of the earth was being stretched, forming a horst or a pulling force, forming grabens. The crust ruptured because of this force, and as a result, lava erupted and ended up deposited on top of the preceding sedimentary rock.

 

In popular culture

 

Dante's View was used as a filming location for the 1977 film Star Wars as the characters overlook the fictional Tatooine spaceport of Mos Eisley (which was added into the scene as a matte painting). That view point is Dante's View.

 

(Wikipedia)

 

Der Death-Valley-Nationalpark ((dɛθ ˈvæli) (Tal des Todes) liegt in der Mojave-Wüste und ist der trockenste Nationalpark in den USA. Er liegt südöstlich der Sierra Nevada, zum größten Teil auf dem Gebiet Kaliforniens und zu einem kleineren Teil in Nevada. Die Region ist ein Hitzepol.

 

Der tiefste Punkt des Tales liegt 85,95 Meter unter dem Meeresspiegel. Es gibt zwei Haupttäler innerhalb des Parks, das Death Valley und das Panamint Valley. Beide Täler sind wenige Millionen Jahre alt. Das Death Valley ist von mehreren Gebirgen umschlossen, die höchste Gebirgskette bildet die Panamint Range mit dem 3366 m hohen Telescope Peak. 1933 wurde das Death Valley zum National Monument ernannt. 1994 wurde es, stark erweitert, zum Nationalpark aufgewertet. Eine kleine Enklave, Devils Hole weiter östlich in Nevada in der Nähe des Ash Meadows National Wildlife Preserve gelegen, gehört ebenfalls zum Park. Das ganze Schutzgebiet gehört zum 1984 begründeten Mojave and Colorado Deserts UNESCO-Biosphärenreservat.

 

Am 20. Februar 2011 wurde der Nationalpark als Lichtschutzgebiet von der International Dark Sky Association auch als International Dark Sky Park (IDSP, in Gold) anerkannt, und nennt sich seither auch Death Valley International Dark Sky Park. Es ist das weitaus größte solche Schutzgebiet der USA und das zweitgrößte weltweit (nach dem Wood Buffalo Dark Sky Reserve in Kanada).

 

Namensherkunft

 

Das Tal erhielt seinen Namen, nachdem 1849 zwei Gruppen von Reisenden mit insgesamt etwa 100 Wagen eine Abkürzung des Old Spanish Trail suchten und dabei in das Tal gerieten. Nachdem sie wochenlang keinen Ausweg aus dem Tal gefunden hatten und bereits gezwungen waren, mehrere ihrer Ochsen zu verspeisen (wobei sie das Holz ihrer Wagen als Brennholz verwendeten), ließen sie ihre restlichen Wagen zurück und verließen das Tal über den Wingate Pass. Dabei drehte sich eine der Frauen aus der Gruppe um und rief dem Tal ein „Goodbye, Death Valley“ hinterher.

 

Trotz einer weitverbreiteten Legende soll niemand aus der Gruppe bei der Taldurchquerung umgekommen sein, bis auf einen Greis namens Culverwell, der schon beim Betreten des Tales sterbensmatt gewesen war. Als Teilnehmer der Reisegruppe beschrieb William Lewis Manly in seinem autobiographischen Werk Death Valley in ’49 die Begebenheiten.

 

Geologie

 

Es gab in der Vergangenheit im Death Valley mindestens vier Perioden mit aktivem Vulkanismus, drei oder vier Perioden, in denen Sedimente abgelagert wurden, und einige plattentektonische Verschiebungen. Außerdem war die Gegend mindestens zweimal vergletschert.

 

Bodenschätze

 

Das Tal ist reich an Metallen, beispielsweise Gold und Silber, sowie an Mineralien wie Talkum und Borax. Viele Jahre lang arbeitete hier eine Minengesellschaft, die das Borax für die Seifenproduktion förderte. Das fertige Produkt wurde in großen Wagen, die jeweils mit 18 Mulis und zwei Pferden bespannt waren, aus dem Tal heraustransportiert. Daher stammt der Markenname 20-Mule-Team.

 

Klima

 

Obwohl das Tal des Todes nur wenige hundert Kilometer vom Pazifischen Ozean entfernt liegt, ist es eine der trockensten Gegenden der Erde. Dies liegt daran, dass sich die feuchten Winde auf ihrem Weg vom Pazifik an fünf Bergrücken abregnen, bevor sie über das Gebiet des Parks ziehen können. Das Death Valley ist außerdem eine der heißesten Gegenden Amerikas.

 

Am 10. Juli 1913 wurde bei Greenland Ranch (heute bekannt als Furnace Creek Ranch) vom National Weather Service eine Temperatur von 56,7 °C (134 °F) gemessen, welche die bisher höchste auf der Erde gemessene Temperatur darstellt. Jedoch führen einige Meteorologen dieses Ergebnis, gestützt durch neuere Untersuchungen, auf einen Beobachtungsfehler zurück. Während das Messergebnis von 1913 weiterhin offiziell als Hitze-Weltrekord anerkannt wird, ist die am 10. Juli 2021 von einem automatisierten Messsystem des National Weather Service in Furnace Creek gemessene Temperatur von 54,4 °C (130 °F) die bisher höchste unbestrittene auf der Erde gemessene Lufttemperatur. Einen Tag später meldete eine andere Messstation in Death Valley die bisher höchste Temperatur bei Nacht in der Geschichte Nordamerikas mit 42 °C (107,7 °F).

 

Am 12. Juli 2012 wurde im Death Valley mit 41,7 °C (107 °F) die damals höchste Nachttemperatur der Welt gemessen; dieser Wert wurde am 17. Juni 2017 in al-Chasab in Oman auf der Arabischen Halbinsel mit 44,2 °C (111,6 °F) überboten.

 

Besiedlung

 

Zu den wenigen ständigen Bewohnern des Death Valley gehört seit alters die kleine Kolonie der Timbisha Shoshone in der Nähe der Hotel-Oase von Furnace Creek. Die Timbishas sind die südlichste geschlossene Stammesgruppe der Western-Shoshone-Indianer.

 

Dante’s View

 

Oberhalb des Death Valley liegt der Aussichtspunkt Dante’s View in einer Höhe von 1669 m über dem Meeresspiegel. Er gehört wie Artists Palette zu den Black Mountains. Von dort aus kann man den zentralen Teil des Death Valley betrachten und hat einen Blick auf das Badwater Basin. Außerdem sieht man den Telescope Peak mit seinem 3366 Meter hohen Gipfel. Das Tal erstreckt sich von links (Süden) nach rechts (Norden); in seiner Mitte erkennt man einen ausgetrockneten Salzsee.

 

(Wikipedia)

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