Lake – a mass of water or other liquid of considerable size, situated on the land. The large number of lakes on Earth is freshwater, and most lie in the Northern hemisphere at higher latitudes. In the ecology of the surrounding lake environment is referred to as lacustrine deposits. Large lakes are sometimes referred to as “inland seas” and small seas are sometimes referred to as lakes. Small lakes tend to put the word “lake” after the name, as in Green Lake, while larger lakes often invert the word order, as in Lake Ontario, at least in North America.
Most lakes have a natural outflow in the form of a river or stream, but some have not, and lose water solely by evaporation and/or underground leakage. They are called internal lakes.
The term “lake” is also used to describe such a feature as lake Eyre, which is a dry basin most of the time, but can be filled with seasonal heavy rains.
Many lakes are artificial and constructed for hydro-electric power, regional purposes, industrial use, agricultural use or domestic water supply.
Evidence of extraterrestrial lakes exists. The testimony of lakes filled with methane, was approved by NASA to return the automatic research station “Cassini” – observing satellite Titan, which moves around the planet Saturn.
The origin Continue reading
Little short of the sanatorium named after S. M. Kirov, in the mysterious depths of the mountain Mashuk famous hidden lake Proval . the entrance to which is guarded by two lions.
Through stone well (its height is 41 m and diameter 15 m) daylight penetrates deep into the mountain, where a deep crack rises from the bowels of the earth of mineral hydrogen sulphide water. In the left part of the lake depth of about 11 m, about 1.5 m. the right Temperature to about 50 degrees.
In the times of Lermontov’s the thrill there’s dancing over the lake: on the initiative of Prince Golitsyn, V. S. famous architect brothers Bernardazzi built in 1837 the platform above the Failure where the guests had danced the quadrille. Most of these were young men who wanted to show off before the ladies. Many people went down to the lake with the help of slings and special baskets to take a dip in the healing waters and likewise was understood to be returning.
The first scientific study of the failure of held 20 — 21 June 1857 F. A. Batalin, Director of the Tiflis meteorological Observatory Moritz . officers surveyors and land surveyors. At the same time was determined the exact depth of the crater and the lake water composition and temperature.
Initially, one about the lake didn’t know. But forms its not an easy water. Continue reading
Savannah — the sea of grasses with occasional Islands of trees with the canopy of the umbrella. Vast areas of these amazing natural communities are in Africa, while the savanna in South America, and Australia, and India. A distinctive feature of the savannas is the alternation of arid and wet seasons that lasts for about half a year, one after another. The fact that subtropical and tropical latitudes, where there are savannas, characterized by the change of two different air masses humid Equatorial and tropical dry.
Significantly influence the climate of savannas monsoon winds that bring seasonal rains. Because these landscapes are located between the very humid Equatorial areas with natural forests and very dry areas of deserts, we are constantly influenced by those and others – approx. But the moisture is present long enough in the savannas, there grew tiered forest and dry “winter” in 2-3 months do not allow Savannah to become a harsh desert.
The annual rhythm of life of the Savannah is associated with climatic conditions. During wet periods a riot of grass vegetation reaches a maximum — the space occupied by savannas, turning into a living carpet of herbs. The picture was broken only by the low, gnarled trees — acacia and baobab trees in Africa, fan palm, ravenala in Madagascar, cacti Continue reading