SmalĺV (nyása) is a lake located in East Central Africa. The lake is elongated in a direction from North to South, and has a length of about 560 km. the Maximum depth of the lake is 706 m. the Height of the lake above sea level 472 meters, the water surface area of approximately 31 000 sq. km.
When David Livingstone (David Livingstone), during his next expedition to Africa, discovered Lake Malawi, he asked the local fishermen about the name of this impressive body of water. To which they replied – “Nyasa”. Livingstone called it the lake, unaware that the word “Nyasa” in the language of the local people and means “lake”. Nyanza – so still call Africans in Tanzania and Mozambique to this day.
The Northern and Eastern shores of lake Malawi with steep shelf poorly developed, but the southern and Western coasts have gently sloping shores. Shoreline of the lake in its landscape can be divided into three types. Approximately one third of the coast is rocky, the remaining part is represented by sandy beaches. The third type of marshy land, overgrown with reeds, located in the mouths of the rivers flowing into the lake rivers. From lake Malawito the South flows the river Shire, where it goes about 20% of the water volume of the lake, and the main loss of water – about 80 % fall on surface evaporation. Continue reading
Of course, lake Quilotoa is one of the most interesting and beautiful places in South America. Hidden at the height of three thousand nine hundred meters above sea level in the Ecuadorian Andes, it fills the crater of a long extinct volcano. During the last eruption, which took place 800 years ago, lava escaped from the volcano Quilotoa, potekla to the shore of the Pacific ocean. It was then that Caldera was formed, whose diameter reaches three kilometers.
The depth of the lake in the crater reaches 250 meters. On the same day, there are fumaroles, through which from the depths of the Earth comes out of volcanic gas. On the East side of lake Quilotoa hot springs. Such conditions did crater lake and its surroundings are the habitat of rare species of animals and plants.
With the Quechua language the word “quilotoa” translates as “Royal tooth”. Although it is unclear what the Indians gave the lake its name. Perhaps because the lake surrounded by mountains looks like a huge stone bowl with a serrated edge. Interestingly, although about Quilotoa often spoken of as the emerald eye of the Andes, its color constantly changing. In bright Sunny weather, the surface water looks really blue and emerald, but in rain or storm lake becomes almost Continue reading
The expedition of scientists has completed the investigation of the case that occurred August 21, 1985. On this day over the North shores of lake Nyos in Western Cameroon held a suffocating cloud of gas that left the victims 1746. In the village of Nyos, Soboma, Cha and Fang almost did not remain of the inhabitants, killed all livestock, poultry and even insects.
Since this lake is situated in the crater of a volcano, considered dormant, many researchers, who arrived here shortly after the tragedy, suggested that the volcano came to life and ejected by the eruption of poisonous gas, passing through water, poison on everything in its path alive.
The survey, carried out by expeditions from Italy, France, Japan, Nigeria, Switzerland, the USA and the UK, found that damaged vegetation along the banks of the lake. The foliage was covered with a brown film. In some places the leaves were black and shrivelled, as from cold. The conclusion was: it is a consequence of the fact that gas emitted from the depths of the lake, extending, cooled and iced foliage. It is known that the selection of dissolved carbon dioxide CO2 is the absorption of energy and therefore causes cooling. In this case cooling could be 10 degrees. The first attempts to take chemical samples of deep water were unsuccessful: when lifting vessels Continue reading