|
1989 Malawi Earthquake
The 1989 Malawi earthquake occurred on 10 March in central Malawi, with a moment magnitude scale, moment magnitude of 6.3 and a maximum Modified Mercalli intensity scale, Mercalli intensity of VIII (''Severe''). It was preceded by a number of foreshocks, the largest being a 5.7 shock on the previous day. The earthquake was felt strongly throughout central Malawi, and also felt in parts of Mozambique (Niassa Province, Niassa and Tete Provinces) and Zambia (Eastern Province, Zambia, Eastern Province). Nine people were killed, with many others injured or left homeless. Geology The 1989 Malawi earthquake was the result of a dip-slip fault in the Malawi rift system, part of the larger East African Rift. It is believed to have occurred at a depth of about , with the lack of Fault (geology), surface faulting being attributed to its occurrence at a relatively deep level. The International Seismological Centre (ISC) placed the epicentre of the 1989 Malawi earthquake at , although the accu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
International Seismological Centre
The International Seismological Centre (ISC) is a non-governmental, nonprofit organisation charged with the final collection, definitive analysis and publication of global seismicity. The ISC was formed in 1964 as an international organisation independent of national governments that would carry on the work of the International Seismological Summary in collecting and analyzing seismic data from around the world, and particularly to handle increased flow of data from the World-Wide Standard Seismograph Network (WWSSN), also established that year. The ISC considers its prime task to be the collection and re-analysis of all available earthquake seismic date in order to produce definitive data on earthquakes. The ISC's catalog is considered "the most complete and authoritative final depository of global earthquake parameter data." Purpose The main scientific goal of the Centre is the definitive compilation of earthquake information and the readings on which they are based. Collecti ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Margin Of Error
The margin of error is a statistic expressing the amount of random sampling error in the results of a survey. The larger the margin of error, the less confidence one should have that a poll result would reflect the result of a census of the entire population. The margin of error will be positive whenever a population is incompletely sampled and the outcome measure has positive variance, which is to say, the measure ''varies''. The term ''margin of error'' is often used in non-survey contexts to indicate observational error in reporting measured quantities. Concept Consider a simple ''yes/no'' poll P as a sample of n respondents drawn from a population N \text(n \ll N) reporting the percentage p of ''yes'' responses. We would like to know how close p is to the true result of a survey of the entire population N, without having to conduct one. If, hypothetically, we were to conduct poll P over subsequent samples of n respondents (newly drawn from N), we would expect those subs ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1989 Earthquakes
File:1989 Events Collage.png, From left, clockwise: The Cypress Street Viaduct, Cypress structure collapses as a result of the 1989 Loma Prieta earthquake, killing motorists below; The proposal document for the World Wide Web is submitted; The Exxon Valdez oil tanker runs aground in Prince William Sound, Alaska, causing a large Exxon Valdez oil spill, oil spill; The Fall of the Berlin Wall begins the downfall of Communism in Eastern Europe, and heralds German reunification; The United States United States invasion of Panama, invades Panama to depose Manuel Noriega; The Singing Revolution led to the independence of the Baltic states of Estonia, Latvia, and Lithuania from the Soviet Union; The stands of Hillsborough Stadium in Sheffield, Yorkshire, where the Hillsborough disaster occurred; 1989 Tiananmen Square protests and massacre, Students demonstrate in Tiananmen Square, Beijing; many are killed by forces of the Chinese Communist Party., 300x300px, thumb rect 0 0 200 200 1989 Loma ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Earthquakes In Malawi
An earthquake (also known as a quake, tremor or temblor) is the shaking of the surface of the Earth resulting from a sudden release of energy in the Earth's lithosphere that creates seismic waves. Earthquakes can range in intensity, from those that are so weak that they cannot be felt, to those violent enough to propel objects and people into the air, damage critical infrastructure, and wreak destruction across entire cities. The seismic activity of an area is the frequency, type, and size of earthquakes experienced over a particular time period. The seismicity at a particular location in the Earth is the average rate of seismic energy release per unit volume. The word ''tremor'' is also used for non-earthquake seismic rumbling. At the Earth's surface, earthquakes manifest themselves by shaking and displacing or disrupting the ground. When the epicenter of a large earthquake is located offshore, the seabed may be displaced sufficiently to cause a tsunami. Earthquakes c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1988–89 South-West Indian Ocean Cyclone Season
The 1988–89 South-West Indian Ocean cyclone season was an active season that featured several storms moving near or over the Mascarene Islands or Madagascar. The eleven tropical storms was two greater than average, of which five became tropical cyclones – a storm with maximum sustained winds over 10 minutes of 120 km/h (75 mph) or greater. Storms were monitored by the Météo-France office (MFR) on Réunion island in an official capacity, as well as the American Joint Typhoon Warning Center (JTWC) on an unofficial base. The season began early with Moderate Tropical Storm Adelinina forming in early November, and continued through the middle of April. Adelinina was one of two storms to form in November, the other being Tropical Cyclone Barisaona which crossed from the adjacent Australian basin. After no activity in December, there were four storms in January, including the most notable of the season – Cyclone Firinga. The storm caused ₣1 billion (1989 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Agricultural School
Agricultural education is the teaching of agriculture, natural resources, and land management. At higher levels, agricultural education is primarily undertaken to prepare students for employment in the agricultural sector. Classes taught in an agricultural education curriculum may include horticulture, land management, turf grass management, agricultural science, small animal care, machine and shop classes, health and nutrition, livestock management, and biology. Agricultural education is common at the primary, secondary (including middle and high school in the United States), tertiary (including vocational schools and universities), and adult levels. Elementary agriculture is often taught in both public and private schools, and can cover such subjects as how plants and animals grow and how soil is farmed and conserved. Vocational agriculture trains people for jobs in such areas as production, marketing, and conservation. College agriculture involves training of people to t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Salima (township)
Salima is a township in the Central Region of Malawi and the capital of the Salima District. Transport The city has a railway station on the Sena railway, under concession of Central East African Railways Central East African Railways is a consortium formed in 1999, led by the Railroad Development Corporation, which won the right to operate the Malawi Railways network. The company was sold in September 2008 to INSITEC, an investment group based in .... Taxi bicycles are the most common mode of transport in the district which in the local language they are called "Dampa/kabaza". Climate Demographics References Populated places in Central Region, Malawi {{malawi-geo-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dedza
Dedza is the main township of Dedza District in the Central Region of Malawi. Description Dedza is located about 85 km south of Malawi's capital, Lilongwe, off the M1 road to Blantyre at a point where a trans-African highway from Johannesburg enters the country. At an altitude of 1590m it is the highest town in Malawi. In June and July it can be chilly, especially in the mornings and evenings. The town is based around a bypass loop of tarmac road connected to the M1. At the northern end of the town centre there is a bus station, Town Assembly offices, sports stadium, police station, banks and petrol station. At the southern end there is a hospital and large market. There are many shops and businesses along the road and a parallel dirt road. Two other petrol stations are located on the M1. Accommodation is available at the Dedza Pottery, Panjira Lodge, Rainbow Resthouse and other local resthouses. There are a number of bars and cafes in the town centre, such as the Boiz ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dedza District
Dedza is a district in the Central Region of Malawi. It covers an area of 3,624 km.² to the south of the Malawi capital, Lilongwe, between Mozambique and Lake Malawi. The capital is Dedza. Geography The western part of the district is on the Central African Plateau at an altitude of 1 200 to 1,600 m. Higher mountain ranges separate this from land alongside Lake Malawi in the Rift Valley at 500 m. The landscape is a mixture of grassland with granite outcrops, natural woodland and commercial pine plantations on the mountains and some bamboo forest nearer the lake. The wet season is November to April with almost no rainfall at other times. The higher altitudes have moderate temperatures and can be cold in June and July. The main town is Dedza Township located on the M1 road 85 km south of Lilongwe. The town has banks, post office, petrol stations, accommodation and a range of shops. There are smaller market towns with a post office, police station, shops and market—Lobi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Deforestation
Deforestation or forest clearance is the removal of a forest or stand of trees from land that is then converted to non-forest use. Deforestation can involve conversion of forest land to farms, ranches, or urban use. The most concentrated deforestation occurs in tropical rainforests. About 31% of Earth's land surface is covered by forests at present. This is one-third less than the forest cover before the expansion of agriculture, a half of that loss occurring in the last century. Between 15 million to 18 million hectares of forest, an area the size of Bangladesh, are destroyed every year. On average 2,400 trees are cut down each minute. The Food and Agriculture Organization of the United Nations defines deforestation as the conversion of forest to other land uses (regardless of whether it is human-induced). "Deforestation" and "forest area net change" are not the same: the latter is the sum of all forest losses (deforestation) and all forest gains (forest expansion) in a gi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Slump (geology)
A slump is a form of mass wasting that occurs when a coherent mass of loosely consolidated materials or a rock layer moves a short distance down a Grade_(slope), slope. Movement is characterized by sliding along a concave-upward or planar surface. Causes of slumping include Earthquake, earthquake shocks, thorough wetting, freezing and thawing, undercutting, and loading of a slope. Translational slumps occur when a detached landmass moves along a planar surface. Common planar surfaces of failure include joints or bedding planes, especially where a permeable layer overrides an impermeable surface. Block slumps are a type of translational slump in which one or more related block units move downslope as a relatively coherent mass. A rotational slump occurs when a slump block, composed of sediment or rock, slides along a concave-upward slip surface with rotation about an axis parallel to the slope. Rotational movement causes the original surface of the block to become less steep, and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
