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Posts tagged Lake Turkana

Lake Turkana in Kenya Rift Valley, Kenya and Ethiopia

3.6N 36.0E

January 17th, 2012 Category: Lakes

Ethiopia and Kenya - January 4th, 2012

Lake Turkana, formerly known as Lake Rudolf, is a lake in the Kenyan Rift Valley, with its far northern end crossing into Ethiopia. It is the world’s largest permanent desert lake and the world’s largest alkaline lake. By volume it is the world’s third-largest salt lake, after the Caspian Sea and Issyk-Kul (passing the shrinking South Aral Sea), and among all lakes it ranks twenty-fourth.

The rocks of the surrounding area are predominantly volcanic. Central Island is an active volcano, emitting vapors. Outcrops and rocky shores are found on the East and South shores of the lake, while dunes, spits and flats are on the West and North, at a lower elevation. Three rivers (the Omo, Turkwel and Kerio) flow into the lake, but lacking outflow its only water loss is by evaporation. Here, brown sediments can be seen entering the northern part of the lake, while the rest appears green from algal growth and minerals in the water.

Lakes Turkana and Kyoga and Mount Elgon, Uganda and Kenya – December 31st, 2011

3.6N 36.0E

December 31st, 2011 Category: Image of the day, Lakes, Volcanoes

Uganda and Kenya - December 29th, 2011

The image focuses on Lake Turkana, formerly known as Lake Rudolf, is a lake in the Great Rift Valley in Kenya, with its far northern end crossing into Ethiopia. Here, sediments and algal growth turn the lake’s color from tan in the north to green and then a dark, bluish green in the south.

It is the world’s largest permanent desert lake and the world’s largest alkaline lake. The rocks of the surrounding area are predominantly volcanic. Central Island is an active volcano, emitting vapors. Outcrops and rocky shores are found on the East and South shores of the lake, while dunes, spits and flats are on the West and North, at a lower elevation.

Visible at the bottom edge of the image are Lake Kyoga, a large shallow lake complex of Uganda, and Mount Elgon, an extinct shield volcano on the border of Uganda and Kenya. It is the oldest and largest solitary volcano in East Africa, covering an area of around 3500 km². Lake Kyoga has an area of about 1,720 km2. The Victoria Nile flows through the lake on its way from Lake Victoria to Lake Albert.

Colorful Waters of Lake Turkana, Kenya – January 27th, 2011

3.6N 36.0E

January 27th, 2011 Category: Image of the day, Lakes

Tanzania - January 16th, 2011

Lake Turkana, formerly known as Lake Rudolf, is a lake in the Great Rift Valley in Kenya, with its far northern end crossing into Ethiopia. Here, the waters of the lake change in color as one moves from north to south.

There is a dark green wetlands area surrounded by tan sediments at the northern end, where the Omo River empties into the lake. The water gradually changes from tan to green near the middle of the lake.

Just below the center, on the west banks, the Turkwel River can be seen entering the lake. Here, the water gradually changes from green to bluish grey, at the southern tip.

Irregular Shape of Lake Victoria, Chief Reservoir of Nile

1.2S 32.7E

June 22nd, 2010 Category: Lakes

Tanzania, Uganda and Kenya - June 10th, 2010

Tanzania, Uganda and Kenya - June 10th, 2010

Most of Lake Victoria, the largest lake in Africa and chief reservoir of the Nile, extends outwards from the left edge of this image. The lake lies mainly in Tanzania (below) and Uganda (above) but also borders on Kenya (eastern shores).

Among the freshwater lakes of the world it is exceeded in size only by Lake Superior in North America, its area being 26,828 square miles (69,484 square km).

An irregular quadrilateral in shape, its shores, save on the west, are deeply indented. Its greatest length from north to south is 210 miles (337 km), its greatest breadth 150 miles (240 km). Its coastline exceeds 2,000 miles (3,220 km).

Upon opening the full image, Lake Turkana is visible to the north. While Lake Victoria appears navy blue and mostly clear of sediments and algae, Lake Turkana is colored green and rusty red.

Lake Turkana, an East African Rift Feature in Kenya and Ethiopia

3.6N 36.0E

March 25th, 2010 Category: Lakes, Volcanoes

Kenya and Ethiopia - March 5th, 2010

Kenya and Ethiopia - March 5th, 2010

Lake Turkana, formerly known as Lake Rudolf, is a lake in the Great Rift Valley in Kenya, with its far northern end crossing into Ethiopia. It is the largest permanent desert lake in the world and also the world’s largest alkaline lake.

The rocks of the surrounding area are predominantly volcanic. Central Island (visible in the center of the lake upon opening the full image) is an active volcano, emitting vapors. Outcrops and rocky shores are found on the East and South shores of the lake, while dunes, spits and flats are on the West and North, at a lower elevation.

The lake is an East African Rift feature. A rift is a weak place in the Earth’s crust due to the separation of two tectonic plates, often accompanied by a graben, or trough, in which lake water can collect. Currently the graben is 320 km wide in the north of the lake, 170 km in the south.

The visible tectonic features of the region result from extensive extrusions of basalt over the Turkana-Omo basin in the window 4.18-3.99 mya. These are called the Gombe Group Basalts. They are subdivided into the Mursi Basalts and the Gombi Basalts.

The two latter basalts are identified as the outcrops that are the rocky mountains and badlands around the lake.  Short-term fluctuations in lake level combined with periodic volcanic ash spewings over the region have resulted in a fortuitous layering of the ground cover over the basal rocks.

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