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Red Lake Peak
Red Lake Peak (elevation ) is believed to be the vantage point from which John C. Fremont and Charles Preuss made the first recorded sighting of Lake Tahoe by Europeans in February 1844 as Fremont's exploratory expedition made a desperate crossing of the Sierra Nevada through what is now Carson Pass on their way to obtain provisions at Sutter's Fort. The peak lies just north of the pass and generally northwest of the small lake east of the pass for which the peak is named. Lake Tahoe and Stevens Peak are visible to the north from the peak. Elephants Back and Round Top can be seen to the south. Climate According to the Köppen climate classification system, Red Lake Peak is located in an alpine climate zone. Most weather fronts originate in the Pacific Ocean, and travel east toward the Sierra Nevada mountains. As fronts approach, they are forced upward by the peaks (orographic lift), causing them to drop their moisture in the form of rain or snowfall Snow comprises individ ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Alpine County, California
, other_name = , settlement_type = County , image_skyline = , image_flag = Flag of Alpine County, California.svg , flag_size = , image_seal = Seal of Alpine County, California.png , seal_size = , named_for = Its location in the Sierra Nevada resembling the (Swiss) Alps , subdivision_type = Country , subdivision_name = , subdivision_type1 = State , subdivision_name1 = , subdivision_type2 = Region , subdivision_name2 = Sierra Nevada , seat_type = County seat , seat = Markleeville , parts_type = Largest community , parts = Markleeville , unit_pref = US , area_total_sq_mi = 743 , area_land_sq_mi = 738 , area_water_sq_mi = 4.8 , elevation_max_footnotes = , elevation_max_ft = 11464 , elevati ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Elephants Back
Elephants Back is a 9,585-foot-elevation (2,922 meter) mountain summit located in Alpine County, California, United States. Description This landmark of Hope Valley is set in the Mokelumne Wilderness of the Sierra Nevada mountain range. The summit is situated one mile south of Carson Pass and 1.4 mile (2.25 km) northeast of line parent Round Top. Elephants Back is a lava dome which was created in association with the now-inactive volcanic vent that is Round Top. Precipitation runoff from the peak's east slope drains to the West Fork Carson River via Red Lake Creek, whereas the west slope drains to Caples Lake via Woods Creek. Topographic relief is significant as the summit rises 1,600 feet (488 meters) above Forestdale Creek in less than one mile. The Pacific Crest Trail traverses the eastern and northern slopes of this peak, providing an approach from California State Route 88. History During his second exploratory expedition, John C. Frémont campe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mountains Of Alpine County, California
A mountain is an elevated portion of the Earth's crust, generally with steep sides that show significant exposed bedrock. Although definitions vary, a mountain may differ from a plateau in having a limited summit area, and is usually higher than a hill, typically rising at least 300 metres (1,000 feet) above the surrounding land. A few mountains are isolated summits, but most occur in mountain ranges. Mountains are formed through tectonic forces, erosion, or volcanism, which act on time scales of up to tens of millions of years. Once mountain building ceases, mountains are slowly leveled through the action of weathering, through slumping and other forms of mass wasting, as well as through erosion by rivers and glaciers. High elevations on mountains produce colder climates than at sea level at similar latitude. These colder climates strongly affect the ecosystems of mountains: different elevations have different plants and animals. Because of the less hospitable terrain ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Snowfall
Snow comprises individual ice crystals that grow while suspended in the atmosphere—usually within clouds—and then fall, accumulating on the ground where they undergo further changes. It consists of frozen crystalline water throughout its life cycle, starting when, under suitable conditions, the ice crystals form in the atmosphere, increase to millimeter size, precipitate and accumulate on surfaces, then metamorphose in place, and ultimately melt, slide or sublimate away. Snowstorms organize and develop by feeding on sources of atmospheric moisture and cold air. Snowflakes nucleate around particles in the atmosphere by attracting supercooled water droplets, which freeze in hexagonal-shaped crystals. Snowflakes take on a variety of shapes, basic among these are platelets, needles, columns and rime. As snow accumulates into a snowpack, it may blow into drifts. Over time, accumulated snow metamorphoses, by sintering, sublimation and freeze-thaw. Where the climate is co ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Orographic Lift
Orographic lift occurs when an air mass is forced from a low elevation to a higher elevation as it moves over rising terrain. As the air mass gains altitude it quickly cools down adiabatically, which can raise the relative humidity to 100% and create clouds and, under the right conditions, precipitation. Orographic lifting can have a number of effects, including precipitation, rain shadowing, leeward winds, and associated clouds. Precipitation Precipitation induced by orographic lift occurs in many places throughout the world. Examples include: * The Mogollon Rim in central Arizona * The western slope of the Sierra Nevada range in California * The mountains near Baja California North – specifically La Bocana to Laguna Hanson. * The windward slopes of Khasi and Jayantia Hills (see Mawsynram) in the state of Meghalaya in India. * The Western Highlands of Yemen, which receive by far the most rain in Arabia. * The Western Ghats that run along India's western coast. * The Grea ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pacific Ocean
The Pacific Ocean is the largest and deepest of Earth's five oceanic divisions. It extends from the Arctic Ocean in the north to the Southern Ocean (or, depending on definition, to Antarctica) in the south, and is bounded by the continents of Asia and Oceania in the west and the Americas in the east. At in area (as defined with a southern Antarctic border), this largest division of the World Ocean—and, in turn, the hydrosphere—covers about 46% of Earth's water surface and about 32% of its total surface area, larger than Earth's entire land area combined .Pacific Ocean . '' Britannica Concise.'' 2008: Encyclopædia Britannica, Inc. The centers of both the |
Weather Front
A weather front is a boundary separating air masses for which several characteristics differ, such as air density, wind, temperature, and humidity. Disturbed and unstable weather due to these differences often arises along the boundary. For instance, cold fronts can bring bands of thunderstorms and cumulonimbus precipitation or be preceded by squall lines, while warm fronts are usually preceded by stratiform precipitation and fog. In summer, subtler humidity gradients are known as dry lines can trigger severe weather. Some fronts produce no precipitation and little cloudiness, although there is invariably always a wind shift. Cold fronts generally move from west to east, whereas warm fronts move poleward, although any direction is possible. Occluded fronts are a hybrid merge of the two, and stationary fronts are stalled in their motion. Cold fronts and cold occlusions move faster than warm fronts and warm occlusions because the dense air behind them can lift as well as push ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Encyclopædia Britannica
The (Latin for "British Encyclopædia") is a general knowledge English-language encyclopaedia. It is published by Encyclopædia Britannica, Inc.; the company has existed since the 18th century, although it has changed ownership various times through the centuries. The encyclopaedia is maintained by about 100 full-time editors and more than 4,000 contributors. The 2010 version of the 15th edition, which spans 32 volumes and 32,640 pages, was the last printed edition. Since 2016, it has been published exclusively as an online encyclopaedia. Printed for 244 years, the ''Britannica'' was the longest running in-print encyclopaedia in the English language. It was first published between 1768 and 1771 in the Scottish capital of Edinburgh, as three volumes. The encyclopaedia grew in size: the second edition was 10 volumes, and by its fourth edition (1801–1810) it had expanded to 20 volumes. Its rising stature as a scholarly work helped recruit eminent con ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Alpine Climate
Alpine climate is the typical weather (climate) for elevations above the tree line, where trees fail to grow due to cold. This climate is also referred to as a mountain climate or highland climate. Definition There are multiple definitions of alpine climate. In the Köppen climate classification, the alpine and mountain climates are part of group ''E'', along with the polar climate, where no month has a mean temperature higher than . According to the Holdridge life zone system, there are two mountain climates which prevent tree growth : a) the alpine climate, which occurs when the mean biotemperature of a location is between . The alpine climate in Holdridge system is roughly equivalent to the warmest tundra climates (ET) in the Köppen system. b) the alvar climate, the coldest mountain climate since the biotemperature is between 0 °C and 1.5 °C (biotemperature can never be below 0 °C). It corresponds more or less to the coldest tundra climates and to the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Köppen Climate Classification
The Köppen climate classification is one of the most widely used climate classification systems. It was first published by German-Russian climatologist Wladimir Köppen (1846–1940) in 1884, with several later modifications by Köppen, notably in 1918 and 1936. Later, the climatologist Rudolf Geiger (1894–1981) introduced some changes to the classification system, which is thus sometimes called the Köppen–Geiger climate classification system. The Köppen climate classification divides climates into five main climate groups, with each group being divided based on seasonal precipitation and temperature patterns. The five main groups are ''A'' (tropical), ''B'' (arid), ''C'' (temperate), ''D'' (continental), and ''E'' (polar). Each group and subgroup is represented by a letter. All climates are assigned a main group (the first letter). All climates except for those in the ''E'' group are assigned a seasonal precipitation subgroup (the second letter). For example, ''Af'' indi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Round Top (Alpine County, California)
Round Top is a mountain located on the Sierra crest in Alpine County, California, United States. Its summit is the highest point in Eldorado National Forest and the Mokelumne Wilderness. The mountain lies just south of Carson Pass. With of prominence, Round Top is the 16th most prominent mountain in the Sierra Nevada. Geology Round Top is the remnant of a volcano that formed in the Miocene epoch, which lasted from 23 million years ago to 5 million years ago. Most of the mountain's vertical height consists of an intrusive volcanic plug formed of basaltic andesite. This intrusive structure formed under the volcano's surface as subsurface magma gradually cooled and solidified. Approximately is exposed by the northern wall of Summit City canyon, which forms the south face of the mountain. A strong magnetic anomaly in the vicinity indicates that this plug further extends far below the canyon floor. The upper layers of the mountain are made up of extrusive rocks, which formed a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Stevens Peak (California)
Stevens Peak is a 10,059-foot-elevation (3,066 meter) mountain summit located in Alpine County, California, United States. Description This landmark of Hope Valley is set south of South Lake Tahoe, on land managed by Humboldt–Toiyabe National Forest. Stevens Peak is situated in the Sierra Nevada mountain range, with precipitation runoff from the peak's east slope draining to the West Fork Carson River, whereas the west slope drains into the Upper Truckee River. The summit is situated north of line parent Red Lake Peak, and north of Carson Pass. Topographic relief is significant as the east aspect rises above California State Route 88 in 1.5 mile. History John C. Frémont was the first European-American to see Lake Tahoe, during his second exploratory expedition. He and Charles Preuss saw the lake from the summit of what was likely Stevens Peak (or possibly Red Lake Peak) on February 14, 1844. This landform's toponym has been officially adopted by the U.S. Board on G ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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