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Posts tagged Salt Lake

Bodies of Water in the Western Half of Tibet’s Lakes Region

31.2N 83.5E

October 28th, 2009 Category: Climate Change, Lakes

Tibet, China - September 24th, 2009

Tibet, China - September 24th, 2009

Lakes of various colors interrupt the arid landscape of Tibet’s Lakes Region. The ones visible here, mainly salt or alkaline, are found at an altitude of about 4800 meters on the western side of the region.

Although the bodies of water visible here appear free of ice, lakes in this area often freeze solid due to the high altitude and low temperatures. In fact, the Tibetan Plateau contains the world’s third-largest store of ice.

The China Meteorological Administration has reported that temperatures in Tibet are rising four times faster than elsewhere in China, and that the Tibetan glaciers are retreating at a higher speed than in any other part of the world.

The administration noted that although this may be good for agriculture and tourism in the short term, it will cause also lakes to expand and bring floods and mudflows. In the long run the glaciers, which supply water to Asian rivers such as the Indus and the Ganges, could melt and disappear, putting water supplies in those regions in danger.

Ojos del Salado Volcano and Cerro el Muerto Peak on Chile-Argentina Border – October 27th, 2009

27.1S 68.5W

October 27th, 2009 Category: Image of the day, Lakes, Volcanoes

Argentina and Chile - September 29th, 2009

Argentina and Chile - September 29th, 2009

Many volcanoes can be seen along the border of Chile (left) and Argentina (right) in the upper left quadrant of this orthorectified image. Of particular note are the volcano Ojos del Salado and the mountain Cerro el Muerto, near Laguna Verde, the greyish-looking body of water in that same quadrant.

Laguna Verde is a salt lake in the Andes Mountains of Chile. It lies in the Atacama Region, near San Francisco Pass, surrounded by high mountains. The volcano Ojos del Salado marks the south border of its basin.

Visible directly south of the lake is Cerro el Muerto (sometimes translated as “Death Mountain” or “The Dead One”), a mountain peak that is part of the Andes mountain range. It is also known as the 16th of the largest mountain peaks in the Argentine-Chilean border at 6488 m.

The closest neighboring mountain is Ojos del Salado, visible to the southwest on the edge of the image, a massive stratovolcano in the Andes on the Argentina-Chile border and the highest volcano in the world at 6891 m. It is also the second highest mountain in the Western Hemisphere and the highest in Chile. Its name comes from the enormous deposits of salt that, in the form of lagoons or “eyes”, appear in its glaciers

Due to its location near the Atacama desert, the mountain has very dry conditions with snow only remaining on the peak during winter. Despite the generally dry conditions, there is a permanent crater lake about 100 m in diameter at an elevation of 6390 m on the eastern side of Ojos del Salado. This is most likely the highest lake of any kind in the world.

Snow in the Andes West of Mar Chiquita, Argentina

30.6S 62.5W

October 15th, 2009 Category: Lakes

Argentina - September 30th, 2009

Argentina - September 30th, 2009

The Andes Mountains, though veiled by clouds in some places, appear capped by bright white snow as they run horizontally along the western border of Argentina. In a large depression to the right of this long mountain chain lies the Mar Chiquita, the country’s largest naturally occurring salt lake.

Here, much of the shallow lake appears greenish, with white salt flats visible on its northwestern shores. Due to its shallow depth and evaporation, its surface area and salinity vary greatly. This surface area tends to vacilate between averages of 2,000 and 4,500 km².

Russian Land Between Seas

49.1N 44.9E

July 31st, 2009 Category: Lakes, Rivers

Russia - June 21st, 2009

Russia - June 21st, 2009

The Russian land north of the Caucasus Mountains and the border with Georgian stretches between the Ukraine (left) and Kazakhstan (right).

The Volga River and Volgograd Reservoir form a right angle at the center, from the Volga carries on to its delta in the Caspian Sea (lower right). East of that right angle are a series of salt lakes, most of which lie in Kazakhstan.

Also near the center are the Don River and Tsimlyansk Reservoir, from which the Don continues until it reaches the Sea of Azov (lower left). The Sea of Azov then connects to the Black Sea via the Kerch Strait.

Sediments are present along the shores of all three seas, though they are particularly intense at the mouths of the Don and the Volga Rivers.

Salt Lakes in Russia and Kazakhstan

48.7N 47.4E

July 18th, 2009 Category: Lakes

Russia and Kazakhstan - June 21st, 2009

Russia and Kazakhstan - June 21st, 2009

White salt lakes of various sizes dot the brown landscape of Russia (far left) and Kazakhstan, not far from the Caspian Sea. The green area in the bottom left corner is a part of the vegetated lands along the Volga River.

The rounded lake near the center of the left edge is Lake Elton, a salt lake in Volgograd Oblast, Russia, near the border with Kazakhstan. It has an area of 150 km² and is from 0.3 to 0.6 m deep.

Near the bottom edge is Lake Baskunchak, a salt lake of 115 km² in Astrakhan Oblast, Russia, located about 270 km north of the Caspian Sea and 53 km east of the Volga. The surface elevation of the lake is 21 m below sea level.

It is fed by a river that draws from an area of 11,000 km². The salinity of the lake is about 300 g/l. Its very pure salt (99.8 % NaCl) covers 80 % of Russia’s salt production.