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Mraka Sound
Mraka Sound ( bg, залив Мрака, ‘Zaliv Mraka’ \'za-liv 'mra-ka\) is a roughly rectangular water body extending 5 km in southeast-northwest direction and 4.2 km in southwest-northeast direction in Biscoe Islands, Antarctica. It is bounded by Renaud Island on the south, Pickwick Island on the north and Winkle Island on the northeast. The sound is named after the historical region of Mraka in Western Bulgaria. Location Mraka Sound is centred at . British mapping in 1971. Maps British Antarctic Territory: Graham Coast. Scale 1:200000 topographic map. DOS 610 Series, Sheet W 65 64. Directorate of Overseas Surveys, UK, 1971. Antarctic Digital Database (ADD).Scale 1:250000 topographic map of Antarctica. Scientific Committee on Antarctic Research (SCAR). Since 1993, regularly upgraded and updated. References Bulgarian Antarctic Gazetteer.Antarctic Place-names Commission The Antarctic Place-names Commission was established by the Bulgarian Antarctic I ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Biscoe Islands
Biscoe Islands is a series of islands, of which the principal ones are Renaud, Lavoisier (named ''Serrano'' by Chile and ''Mitre'' by Argentina), Watkins, Krogh, Pickwick and Rabot, lying parallel to the west coast of Graham Land and extending between Southwind Passage on the northeast and Matha Strait on the southwest. Another group of islands are the Adolph Islands. The islands are named for John Biscoe, the commander of a British expedition which explored the islands in February 1832. See also * Bates Island * Composite Antarctic Gazetteer * List of Antarctic islands south of 60° S * SCAR * Southwind Passage * Territorial claims in Antarctica Seven sovereign states – Argentina, Australia, Chile, France, New Zealand, Norway, and the United Kingdom – have made eight territorial claims in Antarctica. These countries have tended to place their Antarctic scientific observation and st ... References * Archipelagoes of the Southern Ocean Islands of Antarct ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Antarctica
Antarctica () is Earth's southernmost and least-populated continent. Situated almost entirely south of the Antarctic Circle and surrounded by the Southern Ocean, it contains the geographic South Pole. Antarctica is the fifth-largest continent, being about 40% larger than Europe, and has an area of . Most of Antarctica is covered by the Antarctic ice sheet, with an average thickness of . Antarctica is, on average, the coldest, driest, and windiest of the continents, and it has the highest average elevation. It is mainly a polar desert, with annual precipitation of over along the coast and far less inland. About 70% of the world's freshwater reserves are frozen in Antarctica, which, if melted, would raise global sea levels by almost . Antarctica holds the record for the lowest measured temperature on Earth, . The coastal regions can reach temperatures over in summer. Native species of animals include mites, nematodes, penguins, seals and tardigrades. Where vegetation o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Renaud Island
Renaud Island is an ice-covered island in the Biscoe Islands of Antarctica, long and from (average ) wide, lying between the Pitt Islands and Rabot Island. It is separated from the Pitt Islands to the northeast by Mraka Sound, and from Lavoisier Island to the southwest by Pendleton Strait. History The Biscoe Islands were discovered in 1832 by a British expedition under John Biscoe and were first roughly surveyed by the French Antarctic Expedition under Jean-Baptiste Charcot, 1903–05 and 1908–10. It was on this second expedition that Renaud Island was first charted and named. Renaud Island was again roughly surveyed in 1935-36 by the British Graham Land Expedition (BGLE). A number of the island's geographical features have been individually charted and named. The majority, except where noted below, were first accurately charted on an Argentine government chart of 1957, and named by the United Kingdom Antarctic Place-Names Committee (UK-APC) during the 1950s. Geography ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pickwick Island
Pickwick Island is the largest of the Pitt Islands, in the Biscoe Islands, Antarctica. It is 9.45 km long in southwest–northeast direction, separated from Renaud Island on the southwest by Mraka Sound, and has its northeast coast indented by Misionis Bay. The island was very roughly charted by the British Graham Land Expedition (BGLE) under Rymill, 1934–37. More accurately shown on an Argentine government chart of 1957. Named by the United Kingdom Antarctic Place-Names Committee (UK-APC) in 1959 after Samuel Pickwick, founder of the Pickwick Club in Charles Dickens' Pickwick Papers ''The Posthumous Papers of the Pickwick Club'' (also known as ''The Pickwick Papers'') was Charles Dickens's first novel. Because of his success with ''Sketches by Boz'' published in 1836, Dickens was asked by the publisher Chapman & Hall to s .... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Winkle Island (Antarctica)
Winkle Island is the island lying between Tula Point and Pickwick Island, Pitt Islands, in the Biscoe Islands. It is separated from Renaud Island to the southwest by Mraka Sound. The island was shown on an Argentine government chart of 1957. It was named by the UK-APC in 1959 after Nathaniel Winkle, a member of the Pickwick Club in Charles Dickens' Pickwick Papers. Location Winkle Island is located at , 600 m southeast of Pickwick Island, 2.2 km west-southwest of Arrowsmith Island, and 500 m north of the small peninsula ending in Tula Point, Renaud Island Renaud Island is an ice-covered island in the Biscoe Islands of Antarctica, long and from (average ) wide, lying between the Pitt Islands and Rabot Island. It is separated from the Pitt Islands to the northeast by Mraka Sound, and from Lavoisi .... British mapping in 1971. Maps British Antarctic Territory: Graham Coast. Scale 1:200000 topographic map. DOS 610 Series, Sheet W 65 64. Directorate of Overseas Su ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Antarctic Place-names Commission
The Antarctic Place-names Commission was established by the Bulgarian Antarctic Institute in 1994, and since 2001 has been a body affiliated with the Ministry of Foreign Affairs of Bulgaria. The Commission approves Bulgarian place names in Antarctica, which are formally given by the President of the Republic according to the Bulgarian Constitution (Art. 98) and the established international practice. Bulgarian names in Antarctica Geographical names in Antarctica reflect the history and practice of Antarctic exploration. The nations involved in Antarctic research give new names to nameless geographical features for the purposes of orientation, logistics, and international scientific cooperation. As of 2021, there are some 20,091 named Antarctic geographical features, including 1,601 features with names given by Bulgaria.Bulgarian Antarctic Gazett ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sounds Of Graham Land
In physics, sound is a vibration that propagates as an acoustic wave, through a transmission medium such as a gas, liquid or solid. In human physiology and psychology, sound is the ''reception'' of such waves and their ''perception'' by the brain. Only acoustic waves that have frequency, frequencies lying between about 20 Hz and 20 kHz, the audio frequency range, elicit an auditory percept in humans. In air at atmospheric pressure, these represent sound waves with wavelengths of to . Sound waves above 20 kHz are known as ultrasound and are not audible to humans. Sound waves below 20 Hz are known as infrasound. Different animal species have varying hearing ranges. Acoustics Acoustics is the interdisciplinary science that deals with the study of mechanical waves in gasses, liquids, and solids including vibration, sound, ultrasound, and infrasound. A scientist who works in the field of acoustics is an ''acoustician'', while someone working in the field of a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Landforms Of The Biscoe Islands
A landform is a natural or anthropogenic land feature on the solid surface of the Earth or other planetary body. Landforms together make up a given terrain, and their arrangement in the landscape is known as topography. Landforms include hills, mountains, canyons, and valleys, as well as shoreline features such as bays, peninsulas, and seas, including submerged features such as mid-ocean ridges, volcanoes, and the great ocean basins. Physical characteristics Landforms are categorized by characteristic physical attributes such as elevation, slope, orientation, stratification, rock exposure and soil type. Gross physical features or landforms include intuitive elements such as berms, mounds, hills, ridges, cliffs, valleys, rivers, peninsulas, volcanoes, and numerous other structural and size-scaled (e.g. ponds vs. lakes, hills vs. mountains) elements including various kinds of inland and oceanic waterbodies and sub-surface features. Mountains, hills, plateaux, and plains are the fou ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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