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Posts tagged Mount Nemrut

Mount Nemrut and Arms of Lake Van, Turkey – November 30th, 2009

38.6N 42.9E

November 30th, 2009 Category: Image of the day, Lakes, Volcanoes

Turkey - November 24th, 2009

Turkey - November 24th, 2009

Lake Van is one of the largest endorheic lakes in the world and the largest lake in Turkey, located in the far east of the country in the Van district. It is a saline and soda lake, receiving water from numerous small streams that descend from the surrounding mountains. Here, the Nemrut Volcano can also be seen west of the lake, partially covered with snow.

The lake’s average depth is 171 metres (560 ft) with a maximum recorded depth of 451 metres (1,480 ft). The western portion of the lake is deepest, with a large basin deeper than 400 m (1,300 ft) lying northeast of Tatvan and south of Ahlat. This deeper section of the lake appears navy blue here.

The eastern arms of the lake, on the other hand, are shallower and appear greenish from sediments and algae. The Van-Ahtamar portion, southeast, shelves gradually, with a maximum depth of about 250 m (820 ft) on its northwest side where it joins the rest of the lake. The Erciş arm, northeast, is much shallower, mostly less than 50 m (160 ft), with a maximum depth of about 150 m (490 ft).

Over 100 species of phytoplankton have been recorded in the lake including flagellates, diatoms, bacteria, cyanobacteria, green algae and brown algae. Thirty-six species of zooplankton have also been recorded including Rotatoria, Cladocera and Copepoda in the lake.

Nemrut Volcano Near Shores of Lake Van, Turkey – September 28th, 2009

37.9N 38.7E

September 28th, 2009 Category: Image of the day, Lakes, Volcanoes

Turkey - September 6th, 2009

Turkey - September 6th, 2009

Mount Nemrut, whose round caldera is easily identified near the center of this orthorectified image, is a dormant volcano in Eastern Turkey. It is near Tatvan, a small town in the eastern Anatolian province of Bitlis. The mountain rises from the southwestern shore of Lake Van (upper right), and enters the district of Ahlat to the north.

The volcano is 3,050 m (10,007 ft) high and its elliptic caldera has a diameter of about 7 km by 8 km (4 mi by 5 mi). The western part of the caldera contains a large coldwater crater lake about 155 m (509 ft) deep. There is also a small warm lake whose temperature reaches 60 °C (140 °F), providing evidence of continuing volcanic activity.

Mount Nemrut is the southernmost and youngest of the chain of volcanoes in eastern Anatolia. It is a stratovolcano that began erupting during the fourth geological era and continued to be active until 1597 A.D.

As a result of the volcanic eruptions of Mount Nemrut, the single Van-Mus River Basin was divided into two separate basins. The eruption of Nemrut volcano also led the formation of Lake Van, the largest lake in Turkey.