Èšarcu Mountains
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Èšarcu Mountains
The Țarcu Mountains are a mountain range in southwestern Romania, at the western edge of the Southern Carpathians. They are located between the Bistra Valley (to the south), Timiș River (to the east), Retezat-Godeanu Mountains group, Godeanu Mountains (to the northwest) and Râul Mare (Strei), Râul Mare Valley (to the west), with the Râul Mare Valley serving as their natural border with the Retezat-Godeanu Mountains group, Retezat Mountains. They were declared a Natura 2000 protected area in 2007 due to their unique biodiversity. Together with the Retezat-Godeanu Mountains group, Retezat, Retezat-Godeanu Mountains group, Godeanu and mountains, they constitute the only intact forest landscape in Europe outside of Russia and Scandinavia. Geology Most rocks in the range are crystalline, with few areas with sedimentary rock. As such, the mountains are massif, massifs, cut by narrow valleys. Limestone is found only in a few places. Erosion has formed several very prominent platform ...
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Limestone
Limestone is a type of carbonate rock, carbonate sedimentary rock which is the main source of the material Lime (material), lime. It is composed mostly of the minerals calcite and aragonite, which are different Polymorphism (materials science), crystal forms of calcium carbonate . Limestone forms when these minerals Precipitation (chemistry), precipitate out of water containing dissolved calcium. This can take place through both biological and nonbiological processes, though biological processes, such as the accumulation of corals and shells in the sea, have likely been more important for the last 540 million years. Limestone often contains fossils which provide scientists with information on ancient environments and on the evolution of life. About 20% to 25% of sedimentary rock is carbonate rock, and most of this is limestone. The remaining carbonate rock is mostly Dolomite (rock), dolomite, a closely related rock, which contains a high percentage of the mineral Dolomite (mine ...
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Mountain Ranges Of The Southern Carpathians
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 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 and climate, mountains te ...
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Ski Resort
A ski resort is a resort developed for skiing, snowboarding, and other winter sports. In Europe, most ski resorts are towns or villages in or adjacent to a ski area–a mountainous area with pistes (ski trails) and a ski lift system. In North America, it is more common for ski areas to exist well away from towns, so ski resorts usually are destination resorts, often purpose-built and self-contained, where skiing is the main activity. Ski resort Ski resorts are located in both hemispheres, on all continents except Antarctica. They typically are located on mountains, as they require a large slope. They also need to receive sufficient snow (at least in combination with artificial snowmaking, unless the resort uses dry ski slopes). High concentrations of ski resorts are located in the Alps, Scandinavian Peninsula, Scandinavia, western and eastern List of ski areas and resorts in North America, North America, and List of ski areas and resorts in Japan, Japan. There are also ski res ...
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Weather Station
A weather station is a facility, either on land or sea, with instruments and equipment for measuring atmosphere of Earth, atmospheric conditions to provide information for weather forecasting, weather forecasts and to study the weather and climate. The measurements taken include temperature, atmospheric pressure, humidity, wind speed, wind direction, and precipitation amounts. Wind measurements are taken with as few other obstructions as possible, while temperature and humidity measurements are kept free from direct solar radiation, or insolation. Manual observations are taken at least once daily, while automated measurements are taken at least once an hour. Weather conditions out at sea are taken by ships and buoys, which measure slightly different meteorological quantities such as sea surface temperature (SST), wave height, and wave period. Drifting weather buoys outnumber their moored versions by a significant amount. Weather instruments A weather instrument is any device t ...
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Caldera
A caldera ( ) is a large cauldron-like hollow that forms shortly after the emptying of a magma chamber in a volcanic eruption. An eruption that ejects large volumes of magma over a short period of time can cause significant detriment to the structural integrity of such a chamber, greatly diminishing its capacity to support its own roof and any substrate or rock resting above. The ground surface then collapses into the emptied or partially emptied magma chamber, leaving a large depression at the surface (from one to dozens of kilometers in diameter). Although sometimes described as a Volcanic crater, crater, the feature is actually a type of sinkhole, as it is formed through subsidence and collapse rather than an explosion or impact. Compared to the thousands of volcanic eruptions that occur over the course of a century, the formation of a caldera is a rare event, occurring only a few times within a given window of 100 years. Only eight caldera-forming collapses are known to have ...
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Rainfall
Rain is a form of precipitation where water droplets that have condensed from atmospheric water vapor fall under gravity. Rain is a major component of the water cycle and is responsible for depositing most of the fresh water on the Earth. It provides water for hydroelectric power plants, crop irrigation, and suitable conditions for many types of ecosystems. The major cause of rain production is moisture moving along three-dimensional zones of temperature and moisture contrasts known as weather fronts. If enough moisture and upward motion is present, precipitation falls from convective clouds (those with strong upward vertical motion) such as cumulonimbus (thunder clouds) which can organize into narrow rainbands. In mountainous areas, heavy precipitation is possible where upslope flow is maximized within windward sides of the terrain at elevation which forces moist air to condense and fall out as rainfall along the sides of mountains. On the leeward side of mountains, ...
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Bistra Lake
Bistra may refer to: Name Female's name in Bulgaria Populated places * Bistra, Silistra Province, a village in Silistra Province, Bulgaria * Bistra, Targovishte Province, a village in Targovishte Province, Bulgaria * Bistra, Croatia, a municipality in Zagreb County, Croatia * Donja Bistra, a village in Zagreb County, Croatia * Gornja Bistra, a village in Zagreb County, Croatia * Bistra (mountain) in North Macedonia * Bistra (peak) in Kosovo * Bistra, Alba, a commune in Alba County, Romania * Bistra, Maramureș, a commune in Maramureș County, Romania * Bistra, a village in the commune Popești, Bihor County, Romania * Bistra, Črna na Koroškem, a village in Slovenia * Bistra, Vrhnika, village and monastery in Slovenia Rivers in Romania * Bistra (Arieș), a tributary of the Arieș in Alba County * Bistra (Barcău), a tributary of the Barcău in Bihor County * Bistra (Bicaz), a tributary of the Capra in Neamț County * Bistra (Mureș), a tributary of the Mureș in Mureș Cou ...
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Glacial Lake
A glacial lake is a body of water with origins from glacier activity. They are formed when a glacier erodes the land and then melts, filling the depression created by the glacier. Formation Near the end of the last glacial period, roughly 10,000 years ago, glaciers began to retreat. A retreating glacier often left behind large deposits of ice in hollows between drumlins or hills. As the ice age ended, these melted to create lakes. These lakes are often surrounded by drumlins, along with other evidence of the glacier such as moraines, eskers and erosional features such as glacial striations, striations and chatter marks. These lakes are clearly visible in aerial photos of landforms in regions that were glaciated during the last ice age. The formation and characteristics of glacial lakes vary between location and can be classified into glacial erosion lake, ice-blocked lake, moraine-dammed lake, other glacial lake, supraglacial lake, and subglacial lake. Glacial lakes and chan ...
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