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Posts tagged Lake Rudolf

Colorful Hues of Lake Turkana, Kenya

3.5N 36.0E

November 26th, 2012 Category: Lakes

Kenya – November 25th, 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. Here, sediments and algae color¬†the northern reaches of the lake appear brown with a dark green patch, fading to light green, and then again to dark green in the southern reaches.

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.

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.

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.

Lake Turkana in the Kenyan Desert

April 1st, 2009 Category: Lakes

Kenya - March 24th, 2009

Kenya - March 24th, 2009

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 world’s largest permanent desert lake and the world’s largest alkaline lake.

The climate is hot and very dry. On-shore and off-shore winds can be extremely strong as the lake warms and cools more slowly than the land. Sudden, violent storms are frequent.

Three rivers (the Omo, Turkwel and Kerio) flow into the lake, but lacking outflow its only water loss is by evaporation. Lake volume and dimensions are variable. For example, its level fell by 10 meters between 1975 and 1993. The water is potable but not palatable.

Despite the barren surroundings, the lake itself is a surprisingly rich if somewhat limited habitat for life, which on the lowest level manifests itself in an immense bloom of soda-loving algae, which can change its color from sky blue to jade green. The algae, in turn, support large numbers of fish.

Here, the waters of the lake and the rivers flowing into it appear white due to sun glint. A greenish algal bloom is present in the southern part of the lake.

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