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Ice on Surface of Lake Uvs Nuur, Mongolia

50.2N 92.6E

May 16th, 2011 Category: Lakes

Mongolia - May 2nd, 2011

Several bodies of water can be observed here, in Mongolia’s Great Lakes Depression. At the top of the image is Lake Uvs Nuur, whose surface is frozen and appears bright white.

South of Lake Uvs are Lake Khyargas, ice-free and dark turquoise in color and Lake Airag, smaller, also ice-free and mint-green in color.

Several other lakes can be observed near the bottom of the image, including Lake Khar, Lake Dörgön and Lake Khar-Us (right to left). Although these lakes appear mostly green in color, some patches of ice can be seen on the surface of Lakes Khar and Khar-Us.

Multiple Lakes Around the Sayan Mountains in Asia

49.8N 90.7E

October 26th, 2010 Category: Lakes, Mountains, Rivers

Russia, Mongolia, Kazakhstan and China - October 13th, 2010

The Sayan Mountains, capped in snow, have a central position in this image. Multiple lakes can be observed in the lowlands near the foot of the range.

In the upper right quadrant, in Russia, is the Krasnoyarskoye Reservoir, appearing as a thick dark blue line. The reservoir is located along the Yenisei River.

To the south, across the mountains near the center right, is Lake Uvs Nuur. It is situated on the border between Russia’s Tuva Republic (north) and Mongolia (south). Several other lakes can be seen further south, in Mongolia’s Great Lakes Depression.

In the lower left quadrant, the lake that appears as a long, thick, jagged line is Lake Zaysan, in Kazakhstan. To the east, is the brighter green Lake Ulungur, in China’s Xinjiang Uygur Autonomous Region.

Lakes in Mongolia’s Uvs Province and China’s Xinjiang Uygur Autonomous Region

November 23rd, 2009 Category: Lakes

Mongolia and China - October 7th, 2009

Mongolia and China - October 7th, 2009

Uvs is one of the 21 aimags (provinces) of Mongolia. It is located in the west of the country, 1336 km away from the national capital Ulan Bator. Its capital is Ulaangom, which lies 936m above sea level.

Parts of the steppe in this province are protected as the World Heritage Site Uvs Nuur Basin. In the north, just out of view, the province borders the Russian Federation for 640km, in the east 340 km of border lies between Uvs and Zavkhan province. In the south and west it borders with Khovd and Bayan-Ölgii provinces for 200km each.

The province occupies 4.45% of the national territory, which is equivalent of 69,585 sq. km. Sixty percent of the total area of the province belongs to the mountainous climatic zone, and 40% to the Gobi semi-desert.

The province is named after Mongolia’s biggest lake, Uvs Nuur, touching the top edge of the image. Also visible here are the other five major lakes of Mongolia’s Great Lakes Depression: Lakes Khyargas (below Lake Uvs), Airag (smaller, just south of the former), Khar-Us (southwest of Lake Khyargas), Khar (east of the former) and Dörgön (south of Lake Khar).

Another body of water, Lake Ulungur, is visible near the center of the left edge. This lake, as well as the rest of the land in the lower left quadrant, belongs to China’s Xinjiang Uygur Autonomous Region.

Southern Italy, Between the Tyrrhenian and Adriatic Seas and the Gulf of Taranto

40.4N 16.4E

November 17th, 2009 Category: Lakes

Italy - October 7th, 2009

Italy - October 7th, 2009

The terrain of southern Italy appears divided in two, between the flatter lands near the Adriatic Coast (above) and the more mountainous terrain towards Tyrrhenian Sea (below).

Upon opening the full image, many cities and towns in the Apulia region appear as tan circular areas on the flatter Adriatic side. The main exception to this generally plain-like topography is the Gargano Peninsula (top left corner), home to Monte Gargano.

Also of note on the peninsula are Lake Lesina  (left) and Lake Varano (right), both dark green, separated from the Adriatic by a thin strip of land and dunes. Sediments line the coast of the peninsula, particularly to the right. Other swirls of sediments are also visible in the full image along the shores of the Gulf of Taranto (right).

Continuing to the right along the shoreline, towns cities such as Bari appear as tan patches amidst the green terrain. On the bottom right, by Apulia’s border with the Basilicata Region, the Basento River spills tan sediments into the Gulf of Taranto.

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Uvs Nuur, Mongolia’s Largest Lake – June 23rd, 2009

50.2N 92.6E

June 23rd, 2009 Category: Image of the day, Lakes, Rivers

Lake Uvs, Mongolia - June 8th, 2009

Lake Uvs, Mongolia - June 8th, 2009

Lake Uvs, or Uvs Nuur, is a highly saline lake in an endorheic basin in Mongolia with a small part in Russia – its northeastern tip, situated in Russia’s Tuva Republic. All of the lake and many parts of its surroundings have been declared protected sites.

It is the largest lake in Mongolia by surface area, covering 3,350 km² at 759 m above sea level. Uvs Nuur has a length of 84 km and a width of 79 km, with an average depth of 6 m. This shallow and very saline body of water is the remainder of a huge saline sea which covered a much larger area several thousand years ago.

Its basin is separated from the rest of the Great Lakes Depression by the Khan Khökhii ridge. However, it is not a rift lake as some mistakenly think.

The main feeding rivers are the Baruntara Gol, Nariin Gol, and Tesiin Gol from the Khangai Mountains in the east, and the Kharkhiraa River and Sangil Gol from the Altai Mountains in the west. All of these can be

The very large catchment area with no exit results in highly saline water (18.8 ppt, 5 times saltier than the oceans), primarily due to sulphate and sodium ions.