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Posts tagged Lake Turkana

Lakes Turkana and Victoria, in Kenya and Uganda – September 19th, 2009

3.6N 36.0E

September 19th, 2009 Category: Image of the day, Lakes, Volcanoes

Uganda and Kenya - August 18th, 2009

Uganda and Kenya - August 18th, 2009

Sediments in Lake Turkana color the northern end of the lake rust-red, while the lower sections appear greenish. The lake, formerly known as Lake Rudolf, is located in the Great Rift Valley in Kenya, with the far northern end crossing into Ethiopia.

Lake Turkana 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 rocks of the surrounding area are predominantly volcanic. Central Island, visible in the center of the lake as the name suggests, is an active volcano that emits 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 large, dark blue Lake Victoria is also visible in the lower left quadrant. The western section seen here are in Uganda, while the easternmost parts belong to Kenya.

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.

Lake Turkana and Lake Kyoga near the Kenya-Uganda Border – March 9th, 2009

March 9th, 2009 Category: Image of the day, Lakes, Volcanoes

Kenya - March 5th, 2009

Kenya - March 5th, 2009

Close-up of Lake Turkana

Close-up of Lake Turkana

Two lakes are located near the border between Kenya (right) and Uganda (left).

Lake Turkana is on the Kenyan side, located in the Great 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 fourth largest salt lake.

The rocks of the surrounding area are predominantly volcanic. 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.

In the close-up, water movement through sediments creates a ripple-pattern on the surface.

Close-up of Lake Kyoga

Close-up of Lake Kyoga

On the Ugandan side, Lake Kyoga has an area of about 1,720 km² and is at an elevation of 914 m. The lake reaches its maximum depth at about 5.7 meters, although most of it is less than 4 m in depth.

Lake Kyoga is surrounded by extensive wetlands fed by a complex system of streams and rivers. Dark green algae is present throughout much of the lake, although the particularly bright green patches along the shoreline in the shallowest areas may be from mats of water lilies, papyrus and/or water hyacinth.

Due east of Lake Kyoga stands 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.

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