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Posts tagged Chari River

Green Vegetation Around Lake Chad at the Edge of the Sahara Desert, Chad

13.3N 14.1E

April 8th, 2010 Category: Lakes, Rivers

Chad - March 5th, 2010

Chad - March 5th, 2010

Lake Chad (in French Lac Tchad) is a historically large, shallow lake in Africa, whose size has varied over the centuries. According to the UN it shrank as much as by 95 percent since 1963.

Lake Chad is economically very important, providing water to more than 20 million people living in the four countries that surround it (Chad, Cameroon, Niger, and Nigeria) on the edge of the Sahara Desert.

Lake Chad is located mainly in the far west of Chad, bordering on northeastern Nigeria. The Chari River, fed by its tributary the Logone provides over 90 percent of Lake Chad’s water, with a small amount coming from the Yobe River in Niger and Nigeria. Despite high levels of evaporation the lake is still freshwater.

Over half of the lake’s area is taken up by its many small islands, reedbeds and mudbanks, and a belt of swampland across the middle divides the northern and southern halves while the shorelines are largely composed of marshes.

Because Lake Chad is very shallow—only 10.5 metres (34 ft) at its deepest—its area is particularly sensitive to small changes in average depth, and consequently it also shows seasonal fluctuations in size of about 1m every year. Lake Chad has no apparent outlet, but its waters percolate into the Soro and Bodélé depressions. The climate is dry most of the year round with occasional rains from June to October.

Vegetation Index Around the Chari River, in Chad and the Central African Republic

9.1N 18.3E

December 17th, 2009 Category: Climate Change

Chad and Central African Republic - November 19th, 2009

Chad and Central African Republic - November 19th, 2009

The Chari or Shari River, a 949-kilometer-long river of central Africa, flows from the Central African Republic (below) through Chad (above) in this FAPAR image. The watershed of the river covers 548,747 km².

FAPAR is an abbreviation for Fraction of Absorbed Photosynthetically Active Radiation, which provides information on the planet’s vegetation index. In such images, the color spectrum over land runs from red (1.0), to green, to yellow and white (0.0), while bodies of water appear blue.

This image shows that the land around the river and to its south, in the Central African Republic, is more photosynthetically active (green) than the land in Chad, which appears yellow to white as one moves northward towards the arid belt of the Sahel.

Lake Chad – November 4th, 2008

November 4th, 2008 Category: Image of the day, Lakes

Lake Chad - October 20th, 2008

Lake Chad - October 20th, 2008

Close-up of Lake Chad

Close-up of Lake Chad

Chad, officially known as the Republic of Chad, is a landlocked country in central Africa. It is bordered by Libya to the north, Sudan to the east, the Central African Republic to the south, Cameroon and Nigeria to the southwest, and Niger to the west. Due to its distance from the sea and its largely desert climate, the country is sometimes referred to as the “Dead Heart of Africa”.

Lake Chad, after which the country is named, is the largest wetland in Chad and the second largest in Africa. In this image, we can see Lake Chad on a virtually cloudless day. The rivers below the lake are the two largest in Chad, the Logone River (left) and the Chari River (right).

Detail of area near NDjamena

Detail of area near N'Djamena

N’Djamena (formerly Fort-Lamy), visible south of Lake Chad and north in the close-up to the right, is Chad’s capital and its the largest city. In the lower segment of the close-up, we can see where the Logone and Chari Rivers converge.

Chad is divided into three major geographical regions: a desert zone in the north (where Chad’s highest peak, the Emi Koussi in the Sahara, can be found) an arid Sahelian belt in the centre and a more fertile Sudanese savanna zone in the south. In the image, we can see where the northern desert zone turns into the Sahelian belt.

source Wikipedia