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Lake Ngozi
Lake Ngozi (or Lake Ngosi) is the second largest crater lake in Africa. It can be found near Tukuyu, a small town in the highland Rungwe District, Mbeya Region, of southern Tanzania in East Africa. It is part of the Poroto Mountains and the northern rim of the caldera is the highest point in the range. The caldera mostly composed from trachytic and phonolitic lavas. Ngozi is a Holocene caldera that generated the Kitulo pumice 12,000 years ago during a Plinian eruption, most likely in the same eruption that generated the caldera. Other eruption deposits are the Ngozi Tuff (less than thousand years ago) and the Ituwa Surge base surge deposits of uncertain age, but intermediary to the Kitulo pumice and Ngozi Tuff. The youngest activity generated a pyroclastic flow that flowed southwards for 10 km around 1450 CE. Some pyroclastic cones surround the volcano. The walls of the caldera are forested, with the exception of segments scoured by landslides and high cliffs that inhibit a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Volcanic Crater Lake
A volcanic crater lake is a lake in a crater that was formed by explosive activity or a collapse during a volcanic eruption. Formation Lakes in calderas fill large craters formed by the collapse of a volcano during an eruption. Lakes in maars fill medium-sized craters where an eruption deposited debris around a vent. Crater lakes form as the created depression, within the crater rim, is filled by water. The water may come from precipitation, groundwater circulation (often hydrothermal fluids in the case of volcanic craters) or melted ice. Its level rises until an equilibrium is reached between the rates of incoming and outgoing water. Sources of water loss singly or together may include evaporation, subsurface seepage, and, in places, surface leakage or overflow when the lake level reaches the lowest point on its rim. At such a saddle location, the upper portion of the lake is contained only by its adjacent natural volcanic dam; continued leakage through or surface outflow ac ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Albizia Gummifera
''Albizia gummifera'' is a species of legume in the family Fabaceae, native to sub-saharan Africa and Madagascar, and naturalized in Brazil. It is also known as peacock flower. It is recognisable as a very large deciduous, flat-topped tree reaching 24-27 metres in height and an attractive shape with thick branches. The largest specimens grow in wet or seasonally wet forest and closed woodland but it also thrives in some woodland areas with a notable dry season where it can be found at altitudes over 1500 metres. It grows best at moderate altitudes of around 700 - 1200 metres above sea level, but reaches down to below this at the southernmost extent of its range, in the Runde Runde is an island in the municipality of Herøy, Møre og Romsdal, Herøy in Møre og Romsdal county, Norway. The island has a population of 113 people (as of 2015), and it is connected by the Runde Bridge to the island of Remøya to the south. ... valley in Zimbabwe. It usually has a smooth bark, very ra ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lakes Of Tanzania
Tanzania lies in the African Great Lakes region and boasts over of surface area that is covered by lakes. This makes up 6% of the national surface area and 88% of this area is covered by the three major lakes. Lake Victoria and Lake Tanganyika are part of the two great lakes in that nation, with Lake Victoria being the largest freshwater lake in Africa and Lake Tanganyika being the second-deepest lake in the world. List of lakes The table lists information about each lake:and can be sorted by size or alphabetically by name. For a more comprehensive list, see: :sw:Orodha ya maziwa ya Tanzania : Name: as listed by the World Heritage Committee : Surface Area: Surface area of lake (note: several lakes change their surface area continually based on weather) : Bordering Nations: Nations whose border goes through the lake : Description: Brief description of the lake : See also *Geography of Tanzania *Tanzania Ports Authority * Marine Services Company Limited References E ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Geography Of Mbeya Region
Geography (from Greek: , ''geographia''. Combination of Greek words ‘Geo’ (The Earth) and ‘Graphien’ (to describe), literally "earth description") is a field of science devoted to the study of the lands, features, inhabitants, and phenomena of Earth. The first recorded use of the word γεωγραφία was as a title of a book by Greek scholar Eratosthenes (276–194 BC). Geography is an all-encompassing discipline that seeks an understanding of Earth and its human and natural complexities—not merely where objects are, but also how they have changed and come to be. While geography is specific to Earth, many concepts can be applied more broadly to other celestial bodies in the field of planetary science. One such concept, the first law of geography, proposed by Waldo Tobler, is "everything is related to everything else, but near things are more related than distant things." Geography has been called "the world discipline" and "the bridge between the human and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Volcanic Crater Lakes
A volcano is a rupture in the crust of a planetary-mass object, such as Earth, that allows hot lava, volcanic ash, and gases to escape from a magma chamber below the surface. On Earth, volcanoes are most often found where tectonic plates are diverging or converging, and most are found underwater. For example, a mid-ocean ridge, such as the Mid-Atlantic Ridge, has volcanoes caused by divergent tectonic plates whereas the Pacific Ring of Fire has volcanoes caused by convergent tectonic plates. Volcanoes can also form where there is stretching and thinning of the crust's plates, such as in the East African Rift and the Wells Gray-Clearwater volcanic field and Rio Grande rift in North America. Volcanism away from plate boundaries has been postulated to arise from upwelling diapirs from the core–mantle boundary, deep in the Earth. This results in hotspot volcanism, of which the Hawaiian hotspot is an example. Volcanoes are usually not created where two tectonic plates slide pa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Limnic Eruption
A limnic eruption, also known as a lake overturn, is a very rare type of natural disaster in which dissolved carbon dioxide () suddenly erupts from deep lake waters, forming a gas cloud capable of suffocating wildlife, livestock, and humans. A limnic eruption may also cause tsunami or seiche as the rising displaces water. Scientists believe earthquakes, volcanic activity, and other explosive events can serve as triggers for limnic eruptions. Lakes in which such activity occurs are referred to as limnically active lakes or exploding lakes. Some features of limnically active lakes include: * -saturated incoming water * A cool lake bottom indicating an absence of direct volcanic interaction with lake waters * An upper and lower thermal layer with differing saturations * Proximity to areas with volcanic activity Investigations of the Lake Monoun and Lake Nyos casualties led scientists to classify limnic eruptions as a distinct type of disaster event, even though they can be indirect ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mbeya
Mbeya is a city located in south west Tanzania, Africa. Mbeya's urban population is 620,000 according to the 2022 census. Mbeya is the capital of the surrounding rural Mbeya region (population, with Mbeya, totals approx. 2 million). Mbeya is situated at an altitude of 1,700 metres (5,500 ft), and sprawls through a narrow highland valley surrounded by a bowl of high mountains. The main language is colloquial Swahili, and the English language is extensively taught in schools. History Following the 1906 gold rush, Mbeya was founded as a gold mining town in the 1920s. The TAZARA railway later attracting farming migrants and small entrepreneurs to the area. Mbeya and its district were administered by the British until 1961. Mbeya Region was created in 1961. Mbeya City is now a growing metropolis and business centre for the southern regions and the neighbouring countries of Malawi, Zambia and Congo. The city is well connected with an all-weather road that forms part of the "Grea ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Limnic Eruptions
A limnic eruption, also known as a lake overturn, is a very rare type of natural disaster in which dissolved carbon dioxide () suddenly erupts from deep lake waters, forming a gas cloud capable of suffocating wildlife, livestock, and humans. A limnic eruption may also cause tsunami or seiche as the rising displaces water. Scientists believe earthquakes, volcanic activity, and other explosive events can serve as triggers for limnic eruptions. Lakes in which such activity occurs are referred to as limnically active lakes or exploding lakes. Some features of limnically active lakes include: * -saturated incoming water * A cool lake bottom indicating an absence of direct volcanic interaction with lake waters * An upper and lower thermal layer with differing saturations * Proximity to areas with volcanic activity Investigations of the Lake Monoun and Lake Nyos casualties led scientists to classify limnic eruptions as a distinct type of disaster event, even though they can be indirec ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hagenia Abyssinica
''Hagenia'' is a monotypic genus of flowering plant with the sole species ''Hagenia abyssinica'', native to the high-elevation Afromontane regions of central and eastern Africa. It also has a disjunct distribution in the high mountains of East Africa from Sudan and Ethiopia in the north, through Kenya, Uganda, Rwanda, Burundi, Democratic Republic of Congo, and Tanzania, to Malawi and Zambia in the south. A member of the rose family, its closest relative is the Afromontane genus '' Leucosidea''. Nomenclature It is known in English as African redwood, East African rosewood, brayera, cusso, hagenia, or kousso, in Amharic as ''kosso'', and in Swahili as ''mdobore'' or ''mlozilozi''. Synonyms of the species include ''Banksia abyssinica'', ''Brayera anthelmintica'', ''Hagenia abyssinica'' var. ''viridifolia'' and ''Hagenia anthelmintica''. Description It is a tree up to 20 m in height, with a short trunk, thick branches, and thick, peeling bark. The leaves are up to 40 cm lo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Maesa Lanceolata
''Maesa lanceolata'', the false assegai, is a tree species that is widespread in the Afrotropics, including Madagascar. It occurs from the southern Arabian Peninsula, southwards to the Eastern Cape The Eastern Cape is one of the provinces of South Africa. Its capital is Bhisho, but its two largest cities are East London and Gqeberha. The second largest province in the country (at 168,966 km2) after Northern Cape, it was formed in ..., South Africa. It grows on stream verges, river banks and forest verges, where it is often a pioneer plant. File:Maesa lanceolata, sytwyg, Louwsburg.jpg, File:Maesa lanceolata, bloeiwyse, Louwsburg.jpg, File:Maesa lanceolata, vrugte, Louwsburg.jpg, References * Algemene gids tot BOME. Keith, Paul & Meg Coates Palgrave. 2000. External links * {{Taxonbar, from=Q15326414 lanceolata Afrotropical realm flora Trees of Africa Flora of the Arabian Peninsula Flora of East Tropical Africa Flora of South Tropical Africa Flora of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Africa
Africa is the world's second-largest and second-most populous continent, after Asia in both cases. At about 30.3 million km2 (11.7 million square miles) including adjacent islands, it covers 6% of Earth's total surface area and 20% of its land area.Sayre, April Pulley (1999), ''Africa'', Twenty-First Century Books. . With billion people as of , it accounts for about of the world's human population. Africa's population is the youngest amongst all the continents; the median age in 2012 was 19.7, when the worldwide median age was 30.4. Despite a wide range of natural resources, Africa is the least wealthy continent per capita and second-least wealthy by total wealth, behind Oceania. Scholars have attributed this to different factors including geography, climate, tribalism, colonialism, the Cold War, neocolonialism, lack of democracy, and corruption. Despite this low concentration of wealth, recent economic expansion and the large and young population make Afr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Base Surge
A pyroclastic surge is a fluidised mass of turbulent gas and rock fragments that is ejected during some volcanic eruptions. It is similar to a pyroclastic flow but it has a lower density or contains a much higher ratio of gas to rock, which makes it more turbulent and allows it to rise over ridges and hills rather than always travel downhill as pyroclastic flows do. The speed of pyroclastic density currents has been measured directly via photography only in the case of Mount St. Helens, where they reached 320-470 km/h, or . Estimates of other modern eruptions are around 360 km/h, or 100 m/s (225 mph). Pyroclastic flows may generate surges. For example, the city of Saint-Pierre in Martinique in 1902 was overcome by one. Pyroclastic surge include 3 types, which are base surge, ash-cloud surge, and ground surge. Base surge First recognized after the Taal Volcano eruption of 1965 in the Philippines, where a visiting volcanologist from USGS recognized the phen ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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