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Cyclone Gretelle
Tropical Cyclone Gretelle was a deadly storm that struck southeastern Madagascar in January 1997. The seventh named storm of the 1996–97 South-West Indian Ocean cyclone season, Gretelle developed within the Intertropical Convergence Zone on January 19, and gradually intensified while moving southwestward. On January 22, the storm intensified to tropical cyclone status while passing northwest of Réunion; there, Gretelle produced strong wind gusts and heavy rainfall in mountainous regions. Subsequently, the cyclone strengthened to reach peak 10-minute sustained winds of . On January 24, Gretelle made landfall near Farafangana, the first in the region in 41 years. The cyclone weakened while crossing Madagascar, but restrengthened slightly in the Mozambique Channel. Gretelle meandered off the coast of Mozambique, bringing gusty winds that downed trees, but caused little damage. An approaching trough turned the cyclone to the southeast, and Gretelle dissip ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Réunion
Réunion (; french: La Réunion, ; previously ''Île Bourbon''; rcf, label= Reunionese Creole, La Rényon) is an island in the Indian Ocean that is an overseas department and region of France. It is located approximately east of the island of Madagascar and southwest of the island of Mauritius. , it had a population of 868,846. Like the other four overseas departments, Réunion also holds the status of a region of France, and is an integral part of the French Republic. Réunion is an outermost region of the European Union and is part of the eurozone. Réunion and the fellow French overseas department of Mayotte are the only eurozone regions located in the Southern Hemisphere. As in the rest of France, the official language of Réunion is French. In addition, a majority of the region's population speaks Réunion Creole. Toponymy When France took possession of the island in the seventeenth century, it was named Bourbon, after the dynasty that then ruled France. To break ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ridge (meteorology)
A ridge or barometric ridge is a term in meteorology describing an elongated area of relatively high atmospheric pressure compared to the surrounding environment, without being a closed circulation. It is associated with an area of maximum anticyclonic curvature of wind flow. The ridge originates in the center of an anticyclone and sandwiched between two low-pressure areas, and the locus of the maximum curvature is called the ''ridge line''. This phenomenon is the opposite of a trough. Description Ridges can be represented in two ways: * On surface weather maps, the pressure isobars form contours where the maximum pressure is found along the axis of the ridge. * In upper-air maps, geopotential height isohypses form similar contours where the maximum defines the ridge. Related weather Given the direction of the winds around an anticyclonic circulation and the fact that weather systems move from west to east: *ahead of an upper-ridge, the airflow that comes from the polar regi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Vondrozo
Vondrozo is a rural municipality in Madagascar. It belongs to the district of Vondrozo, which is a part of Atsimo-Atsinanana Region. The population of the commune was estimated to be approximately 10,000 in 2001 commune census. In addition to primary schooling the town offers secondary education at both junior and senior levels. The town provides access to hospital services to its citizens. The majority 97% of the population of the commune are farmers. The most important crops are coffee and pepper, while other important agricultural products are cassava and rice. Services provide employment for 3% of the population. Roads This municipality is crossed by the unpaved National road 27 from Ihosy (206 km) to Farafangana Farafangana is a city (commune urbaine) on the south-east coast of Madagascar and capital of the Atsimo-Atsinanana region. Location Farafangana is the capital of the region Atsimo-Atsinanana located approximately 400 kilometres south of the c ... (66km). ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Vangaindrano
Vangaindrano is a town and a district in Atsimo-Atsinanana Region, Madagascar with a population of 38,537 (2018). Geography The town is near the mouth of the Mananara River at the southern part of the east coast. It's connected to the north by National Road RN 12 to Farafangana that is situated at a distance of 75 km in the North. The road continues south as National Road 12a but this section can hardly be by ordinary vehicles, due to its bad condition and lack of bridges.. Nature The Midongy Atsimo National Park is situated at 90 km from Vangaindrano and the Manombo Reserve, halfway to Farafangana Farafangana is a city (commune urbaine) on the south-east coast of Madagascar and capital of the Atsimo-Atsinanana region. Location Farafangana is the capital of the region Atsimo-Atsinanana located approximately 400 kilometres south of the c .... References Populated places in Atsimo-Atsinanana {{AtsimoAtsinanana-geo-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Maputo Province
Maputo Province is a province of Mozambique; the province excludes the city of Maputo (which comprises a separate province). The province has an area of and a population of 1,968,906 (2017 census). Its capital is the city of Matola. Geography Maputo Province is the southernmost province of Mozambique. It borders Gaza Province to the north, the Indian Ocean to the east, the South African province of KwaZulu-Natal to the south, Eswatini to the southwest, and the Mpumalanga province of South Africa to the west and northwest. The Maputo Bay area to the southeast of Maputo is an important conservation area with many reefs and lakes. Of particular note is the Maputo Elephant Game Reserve, which has lakes such as Lagoa Chingute and Lagoa Piti in the vicinity, and the Machangulo Private Nature Reserve further north of this in the Machangulo Peninsula. The largest river of the province, the Maputo River, running from Amsterdam, Mpumalanga in South Africa near the Eswatini border, fl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gaza Province
Gaza is a province of Mozambique. It has an area of 75,709 km2 and a population of 1,422,460 (2017 census), which is the least populous of all the provinces of Mozambique. Xai-Xai is the capital of the province. Inhambane Province is to the east, Manica Province to the north, Maputo Province to the south, South Africa to the west, and Zimbabwe to the northwest. Geography Most of the district lies in the basin of the Limpopo River, which runs from northwest to southeast through the district, emptying into the Indian Ocean near Xai-Xai. The Changane River, a tributary of the Limpopo, forms part of the province's eastern boundary. The Rio dos Elefantes (Olifants River) flows into the district from the west through the Massingir Dam, to empty into the Limpopo. The Save River forms the northern boundary of the province. The Limpopo railway, which connects Zimbabwe and Botswana to the port of Maputo, runs through the province, entering Zimbabwe at the border town of Chicualac ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mafate
The ''Cirque de Mafate'' is a caldera on Réunion Island (France; located in the Indian Ocean). It was formed from the collapse of the large shield volcano the ''Piton des Neiges''. The very remote and inaccessible cirque was settled in the 19th century by maroon slaves (i.e. slaves who had escaped from their masters), then later by poor white laborers. It owes its name to one maroon leader. Geography The cirque is entirely enclosed by mountains, especially tall cliffs, known as ''remparts'', save for the sole river exiting, the ''Rivière des Galets'' ("river of the pebbles"). Inside the cirque, there are considerable declivities. The ''îlets'' are pieces of more-or-less flat lands, on which the hamlets are located. The name "Mafate" comes from the Malagasy word "Mahafaty", which means lethal, an allusion to the difficulty of reaching the Cirque. Population The cirque has one village, La Nouvelle, and several hamlets (fr. îlet): Marla, Roche-Plate, the Îlet-aux-Orangers ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cold Front
A cold front is the leading edge of a cooler mass of air at ground level that replaces a warmer mass of air and lies within a pronounced surface trough of low pressure. It often forms behind an extratropical cyclone (to the west in the Northern Hemisphere, to the east in the Southern), at the leading edge of its cold air advection pattern—known as the cyclone's dry "conveyor belt" flow. Temperature differences across the boundary can exceed from one side to the other. When enough moisture is present, rain can occur along the boundary. If there is significant instability along the boundary, a narrow line of thunderstorms can form along the frontal zone. If instability is weak, a broad shield of rain can move in behind the front, and evaporative cooling of the rain can increase the temperature difference across the front. Cold fronts are stronger in the fall and spring transition seasons and are weakest during the summer. Development of cold fronts A cold front occurs wh ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
United Nations Department Of Humanitarian Affairs
The United Nations Office for the Coordination of Humanitarian Affairs (OCHA) is a United Nations (UN) body established in December 1991 by the General Assembly to strengthen the international response to complex emergencies and natural disasters. It is the successor to the Office of the United Nations Disaster Relief Coordinator (UNDRO). The Department of Humanitarian Affairs (DHA) was established shortly thereafter by the Secretary-General, but in 1998 was merged into OCHA, which became the UN's main focal point on major disasters. OCHA's mandate was subsequently broadened to include coordinating humanitarian response, policy development and humanitarian advocacy. Its activities include organizing and monitoring humanitarian funding, advocacy, policy-making, and information exchange to facilitate rapid-response teams for emergency relief. OCHA is led by the Under-Secretary-General for Humanitarian Affairs and Emergency Relief Coordinator (USG/ERC), appointed for a five-year t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Saffir–Simpson Scale
The Saffir–Simpson hurricane wind scale (SSHWS) classifies hurricanes—which in the Western Hemisphere are tropical cyclones that exceed the intensities of tropical depressions and tropical storms—into five categories distinguished by the intensities of their sustained winds. This measuring system was formerly known as the Saffir–Simpson hurricane scale, or SSHS. To be classified as a hurricane, a tropical cyclone must have one-minute-average maximum sustained winds at 10 m above the surface of at least 74 mph (64 kn, 119 km/h; Category 1). The highest classification in the scale, Category 5, consists of storms with sustained winds of at least 157 mph (137 kn, 252 km/h). The classifications can provide some indication of the potential damage and flooding a hurricane will cause upon landfall. The Saffir–Simpson hurricane wind scale is based on the highest wind speed averaged over a one-minute interval 10 m above th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Coordinated Universal Time
Coordinated Universal Time or UTC is the primary time standard by which the world regulates clocks and time. It is within about one second of mean solar time (such as UT1) at 0° longitude (at the IERS Reference Meridian as the currently used prime meridian) and is not adjusted for daylight saving time. It is effectively a successor to Greenwich Mean Time (GMT). The coordination of time and frequency transmissions around the world began on 1 January 1960. UTC was first officially adopted as CCIR Recommendation 374, ''Standard-Frequency and Time-Signal Emissions'', in 1963, but the official abbreviation of UTC and the official English name of Coordinated Universal Time (along with the French equivalent) were not adopted until 1967. The system has been adjusted several times, including a brief period during which the time-coordination radio signals broadcast both UTC and "Stepped Atomic Time (SAT)" before a new UTC was adopted in 1970 and implemented in 1972. This change also a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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