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Greenish Lake Urmia Ringed by White Salt Flats, Iran – October 29th, 2010

37.6N 45.4E

October 29th, 2010 Category: Image of the day, Lakes, Salt Flats

Iran - October 21st, 2010

Lake Urmia, in northwestern Iran near the border with Turkey, is a large salt lake. Due to use of the lake’s waters for agricultural purposes, the water levels have dropped, showing white salt flats around the edges.

Here, the lake’s waters themselves appear green, although at other times they have appeared red in color (click here for an example). The southern end appears shallower and white in color. A cluster of islands can be seen in this section of the lake.

Upon opening the full image, a causeway can be seen cutting across the lake at its narrowest part. Also visible in the full image is Lake Van, in Turkey, to the west.

Causeway Running Across the Middle of Lake Urmia, Iran – December 13th, 2009

37.6N 45.4E

December 13th, 2009 Category: Image of the day, Lakes

Iran - November 24th, 2009

Iran - November 24th, 2009

Lake Urmia is a salt lake in northwestern Iran near Turkey. The lake is between the provinces of East Azerbaijan and West Azerbaijan. The lake is divided into north and south parts separated by a causeway, visible here as a line across the center of the lake. The 1500m gap in the causeway provides little exchange of water between the two parts.

Due to drought and increased demands for agricultural water in the lake’s basin, the salinity of the lake has risen to more than 300 g/L during recent years, and large areas of the lake bed have been desiccated.

Dust Over Iraq and Colors of Lakes Van and Urmia – June 4th, 2012

37.1N 44.4E

June 4th, 2012 Category: Dust Storms, Image of the day, Lakes, Rivers

Iraq, Iran, Turkey - June 1st, 2012

This image focuses on two large bodies of water: Lake Van, in Turkey (upper left) and Lake Urmia, in Iran (right). Lake Van usually appears dark blue due to its depth, with some green from sediments and algal growth in its shallower sections. Lake Urmia, however, changes color frequently (click here for more images) as it is relatively shallow and subject to more fluctuations in salt/mineral content and algal growth.

A third large lake can be seen upon opening the full image: the teardrop-shaped Lake Tharthar, in Iraq. Dust can be seen blowing near the lake, over the valley through which the Tigris and Euphrates Rivers flow.

Lakes Urmia and Sevan, Iran and Armenia – March 10th, 2012

40.3N 45.3E

March 10th, 2012 Category: Image of the day, Lakes, Salt Flats

Caspian Sea - March 7th, 2012

The bright green lake in the lower part of this image is Lake Urmia, in Iran. The edges of the lake appear white as they are framed by salt flats. The southern part of the lake is shallower and thus appears lighter in color and shows more salt flats.

In the upper part of the image, on the contrary, is Lake Sevan, the largest lake in Armenia and the Caucasus region. It is one of the largest high-altitude lakes in the world. The lake appears dark blue in color, as it is significantly deeper than its southern neighbor. Lake Sevan is situated in the central part of the Republic of Armenia, inside the Gegharkunik Province, at the altitude of 1,900m above sea level. The total surface area of its basin is about 5,000 km2, the lake itself is 940 km2, and the volume is 34.0 bln cubic meters.

Caucasus Mountains and Lakes Van, Urmia and Sevan in Eurasia – August 25th, 2011

41.5N 44.8E

August 25th, 2011 Category: Image of the day, Lakes, Mountains

Caspian Sea - July 26th, 2011

The Caucasus Mountains stretch between the Black Sea (left) and the Caspian Sea (right) in the Caucasus region of Eurasia. The Caucasus Mountains include the Greater Caucasus Mountain Range and
the Lesser Caucasus Mountains.

The Greater Caucasus Range extends from the Caucasian Natural Reserve in the vicinity of Sochi on the northeastern shore of the Black Sea, generally trending east-southeast and reaching nearly to Baku on the Caspian Sea, while the Lesser Caucasus runs parallel to the greater range, at a distance averaging about 100 km (62 mi) south.

Visible to the south of the mountains are three lakes arranged in a triangle: Lake Van, in Turkey (left), the reddish Lake Urmia, in Iran (right), and Lake Sevan, in Armenia. Each is the largest lake in its respective country.