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South African National Antarctic Programme
The South African National Antarctic Programme (or SANAP) is the South African government's programme for research in the Antarctic and Subantarctic. Three research stations fall under this programme: the Antarctica research station SANAE IV, and one station each on the subantarctic islands Gough Island and Marion Island. These stations are managed and administered by the Directorate: Antarctic and Islands of the Department of Environmental Affairs. Borga Base was also operated by SANAP from 1969 to 1976. The mission of the South African National Antarctic Programme is to increase understanding of the natural environment and life in the Antarctic and Southern Ocean through appropriate science and technology. South Africa is one of the original signatory states of the Antarctic Treaty. Experiments In April 2017, SANAP launched an experiment on Marion Island called Probing Radio Intensity at high-Z from Marion (PRIZM), searching for signatures of the hydrogen line in the ea ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
South Africa
South Africa, officially the Republic of South Africa (RSA), is the southernmost country in Africa. It is bounded to the south by of coastline that stretch along the South Atlantic and Indian Oceans; to the north by the neighbouring countries of Namibia, Botswana, and Zimbabwe; and to the east and northeast by Mozambique and Eswatini. It also completely enclaves the country Lesotho. It is the southernmost country on the mainland of the Old World, and the second-most populous country located entirely south of the equator, after Tanzania. South Africa is a biodiversity hotspot, with unique biomes, plant and animal life. With over 60 million people, the country is the world's 24th-most populous nation and covers an area of . South Africa has three capital cities, with the executive, judicial and legislative branches of government based in Pretoria, Bloemfontein, and Cape Town respectively. The largest city is Johannesburg. About 80% of the population are Black South Afri ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Antarctic Treaty System
russian: link=no, Договор об Антарктике es, link=no, Tratado Antártico , name = Antarctic Treaty System , image = Flag of the Antarctic Treaty.svgborder , image_width = 180px , caption = Flag of the Antarctic Treaty System , type = Condominium , date_drafted = , date_signed = December 1, 1959"Antarctic Treaty" in ''The New Encyclopædia Britannica''. Chicago: Encyclopædia Britannica Inc., 15th edn., 1992, Vol. 1, p. 439. , location_signed = Washington, D.C., United States , date_sealed = , date_effective = June 23, 1961 , condition_effective = Ratification of all 12 signatories , date_expiration = , signatories = 12 , parties = 55 , depositor = Federal government of the United States , languages = English, French, Russian, and Spanish , wikisource = Antarctic Treaty The Antarctic Treaty an ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bettine Van Vuuren
Bettine van Vuuren is the Senior Director: Strategic Initiatives and Administration at the University of Johannesburg. She is also a Professor of Zoology and Director of the Centre for Ecological Genomics and Wildlife Conservatio at the University of Johannesburg. Early life and education Bettine van Vuuren studied at the University of Pretoria, South Africa. She was awarded a PhD in Zoology on the topic '''Molecular phylogeny of duiker antelope (Mammalia: Cephalophini) ''. She subsequently relocated to Stellenbosch University following a postdoctoral position at the University of Montpellier II, France. Her research focused on game mammals in French Guiana and the results contributed towards the development of hunting laws for the protection of Neotropical game species. She was invited to become a core team member of the Centre of Excellence for Invasion Biology (CIB) (ended 2014). In 2011, she accepted a position at the University of Johannesburg (where she established the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Radio-frequency Interference
Electromagnetic interference (EMI), also called radio-frequency interference (RFI) when in the radio frequency spectrum, is a disturbance generated by an external source that affects an electrical circuit by electromagnetic induction, electrostatic coupling, or conduction. The disturbance may degrade the performance of the circuit or even stop it from functioning. In the case of a data path, these effects can range from an increase in error rate to a total loss of the data. Both man-made and natural sources generate changing electrical currents and voltages that can cause EMI: ignition systems, cellular network of mobile phones, lightning, solar flares, and auroras (northern/southern lights). EMI frequently affects AM radios. It can also affect mobile phones, FM radios, and televisions, as well as observations for radio astronomy and atmospheric science. EMI can be used intentionally for radio jamming, as in electronic warfare. History Since the earliest days of ra ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Earth
Earth is the third planet from the Sun and the only astronomical object known to harbor life. While large volumes of water can be found throughout the Solar System, only Earth sustains liquid surface water. About 71% of Earth's surface is made up of the ocean, dwarfing Earth's polar ice, lakes, and rivers. The remaining 29% of Earth's surface is land, consisting of continents and islands. Earth's surface layer is formed of several slowly moving tectonic plates, which interact to produce mountain ranges, volcanoes, and earthquakes. Earth's liquid outer core generates the magnetic field that shapes the magnetosphere of the Earth, deflecting destructive solar winds. The atmosphere of the Earth consists mostly of nitrogen and oxygen. Greenhouse gases in the atmosphere like carbon dioxide (CO2) trap a part of the energy from the Sun close to the surface. Water vapor is widely present in the atmosphere and forms clouds that cover most of the planet. More solar e ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Journal Of Astronomical Instrumentation
The ''Journal of Astronomical Instrumentation'' is a quarterly peer-reviewed scientific journal that covers astronomical instruments and its various components being proposed, developed, under construction, and in use. The journal focuses on astronomical instrumentation topics in all wavebands (radio wave to gamma ray) and includes the disciplines of heliophysics, space weather, lunar and planetary science, exoplanet exploration, and astroparticle observation (cosmic rays, cosmic neutrinos, etc.). It was established in 2012 and is published by World Scientific. The journal occasionally publishes thematic issues on specific topics or projects. Abstracting and indexing The journal is abstracted and indexed in: * Astrophysics Data System * EBSCO databases * Emerging Sources Citation Index * InfoTrac databases * INSPIRE-HEP * Scopus Scopus is Elsevier's abstract and citation database launched in 2004. Scopus covers nearly 36,377 titles (22,794 active titles and 13,583 inactive ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hydrogen Line
The hydrogen line, 21 centimeter line, or H I line is the electromagnetic radiation spectral line that is created by a change in the energy state of neutral hydrogen atoms. This electromagnetic radiation has a precise frequency of , which is equivalent to the vacuum wavelength of in free space. This frequency falls below the microwave region of the electromagnetic spectrum, which begins at 3.0 GHz (10 cm wavelength), and it is observed frequently in radio astronomy because those radio waves can penetrate the large clouds of interstellar cosmic dust that are opaque to visible light. This line is also the theoretical basis of the hydrogen maser. The microwaves of the hydrogen line come from the atomic transition of an electron between the two hyperfine levels of the hydrogen 1 s ground state that have an energy difference of []. It is called the ''spin-flip transition''. The frequency, , of the quantum, quanta that are emitted by this transition between tw ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Department Of International Relations And Cooperation
The Department of International Relations and Cooperation (DIRCO) is the foreign ministry of the South African government. It is responsible for South Africa's relationships with foreign countries and international organizations, and runs South Africa's diplomatic missions. The department is headed by the Minister of International Relations and Cooperation, currently Naledi Pandor. Formerly known as the Department of Foreign Affairs, it was renamed the Department of International Relations and Cooperation by President Jacob Zuma in May 2009. In the 2010 national budget, it received an appropriation of 4,824.4 million rand, and had 4,533 employees. According to OECD estimates, 2019 official development assistance from South Africa decreased to US$106 million. In 2022, when Cuba asked for humanitarian medical and food aid, AfriForum managed to obtain an interdict against a pending R50 million payout by the department, labelling it "squandering of taxpayers' money". The chairp ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Southern Ocean
The Southern Ocean, also known as the Antarctic Ocean, comprises the southernmost waters of the World Ocean, generally taken to be south of 60° S latitude and encircling Antarctica. With a size of , it is regarded as the second-smallest of the five principal oceanic divisions: smaller than the Pacific, Atlantic, and Indian oceans but larger than the Arctic Ocean. Over the past 30 years, the Southern Ocean has been subject to rapid climate change, which has led to changes in the marine ecosystem. By way of his voyages in the 1770s, James Cook proved that waters encompassed the southern latitudes of the globe. Since then, geographers have disagreed on the Southern Ocean's northern boundary or even existence, considering the waters as various parts of the Pacific, Atlantic, and Indian oceans, instead. However, according to Commodore John Leech of the International Hydrographic Organization (IHO), recent oceanographic research has discovered the importance of Southern ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Department Of Science And Innovation
The Department of Science and Innovation (DST; formerly the Department of Science and Technology) is the South African government department responsible for scientific research, including space programmes. The current Minister is Blade Nzimande. Much of the department's work is ultimately carried out through various quasi-independent agencies (although still usually government bodies) including: * the National Research Foundation (South Africa), which receives a substantial proportion of the DST budget to carry out various research support tasks, including supporting key national research infrastructure ("National Research Facilities"), scientific research grant administration and a student grant scheme; * the Council for Scientific and Industrial Research, which acts as a quasi-privatised research and development agency with a specific focus on research of application to industry; * the Technology Innovation Agency, which serves to provide funding to turn innovative research in ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Borga Base
Borga Base was a semipermanent Antarctic research station operated by South Africa named after Borg Massif where it was located. It was created to house 4-5 people year-round and was 350 kilometers (220 miles) south of the location of South Africa's primary Antarctic research station, SANAE IV. Its main building was a Parcoll hut, a long hut with a semicircular frame resembling half a cylinder. History Borga Base was created with the support of Belgian aircraft during the International Geophysical Year and was inaugurated in 1969. In the years of its operation, expedition teams would attempt the traverse from SANAE to Borga Base using specialized tractors, though they were not always successful. In 1969, mechanic Gordon Mackie was the first casualty of South African Antarctic research when he fell to his death on the traverse between the two bases. In 1970, mechanical and weather difficulties forced the team to abandon their attempt to reach Borga. In 1971, mechanical issues once ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Department Of Environmental Affairs (South Africa)
The Department of Environmental Affairs was a department of the South African government with responsibility for the environment. It was created in 2009 when the Department of Environmental Affairs and Tourism was split into two departments, and was replaced in 2019 by the Department of Environment, Forestry and Fisheries The Department of Environment, Forestry & Fisheries is one of the departments of the South African government. It is responsible for protecting, conserving and improving the South African environment and natural resources. It was created in ... which also incorporated the forestry and fisheries components from the former Department of Agriculture, Forestry and Fisheries. Environmental Affairs South Africa, Environmental Affairs Environmental agencies in South Africa Government agencies established in 2009 2009 establishments in South Africa 2019 disestablishments in South Africa {{environmental-agency-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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