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Aeneas Mackintosh
Aeneas Lionel Acton Mackintosh (1 July 1879 – 8 May 1916) was a British Merchant Navy officer and Antarctic explorer, who commanded the Ross Sea party as part of Sir Ernest Shackleton's Imperial Trans-Antarctic Expedition, 1914–1917. The Ross Sea party's mission was to support Shackleton's proposed transcontinental march by laying supply depots along the latter stages of the march's intended route. In the face of persistent setbacks and practical difficulties, Mackintosh's party fulfilled its task, although he and two others died in the course of their duties. Mackintosh's first Antarctic experience was as second officer on Shackleton's ''Nimrod'' expedition, 1907–1909. Shortly after his arrival in the Antarctic, a shipboard accident destroyed his right eye, and he was sent back to New Zealand. He returned in 1909 to participate in the later stages of the expedition; his will and determination in adversity impressed Shackleton, and led to his Ross Sea party appointmen ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tirhut
Mithila (), also known as Tirhut, Tirabhukti and Mithilanchal is a geographical and cultural region of the Indian subcontinent bounded by the Mahananda River in the east, the Ganges in the south, the Gandaki River in the west and by the foothills of the Himalayas in the north. It comprises certain parts of Bihar and Jharkhand of India and adjoining districts of the Province No. 1, Bagmati Pradesh and Madhesh Province of Nepal. The native language in Mithila is Maithili, and its speakers are referred to as Maithils. The name Mithila is commonly used to refer to the Videha Kingdom, as well as to the modern-day territories that fall within the ancient boundaries of Videha. Till the 20th century, Mithila was still ruled in part by the Raj Darbhanga. History Vedic period Mithila first gained prominence after being settled by Indo-Aryan peoples who established the Videha kingdom. During the Later Vedic period (c. 1100–500 BCE), Videha became one of the major political and cultu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Indigofera
''Indigofera'' is a large genus of over 750 species of flowering plants belonging to the pea family Fabaceae. They are widely distributed throughout the tropical and subtropical regions of the world. Description Species of ''Indigofera'' are mostly shrubs, though some are small trees or herbaceous perennials or annuals. Most have pinnate leaves. Racemes of flowers grow in the leaf axils, in hues of red, but there are a few white- and yellow-flowered species. The fruit is a legume pod of varying size and shape. ''Indigofera'' is a varied genus that has shown unique characteristics making it an interesting candidate as a potential perennial crop. Specifically, there is diverse variation among species with a number of unique characteristics. Some examples of this diversity include differences in pericarp thickness, fruit type, and flowering morphology. The unique characteristics it has displayed include potential for mixed smallholder systems with at least one other species and a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Snow Blindness
Photokeratitis or ultraviolet keratitis is a painful eye condition caused by exposure of insufficiently protected eyes to the ultraviolet (UV) rays from either natural (e.g. intense sunlight) or artificial (e.g. the electric arc during welding) sources. Photokeratitis is akin to a sunburn of the cornea and conjunctiva. The injury may be prevented by wearing eye protection that blocks most of the ultraviolet radiation, such as welding goggles with the proper filters, a welder's helmet, sunglasses rated for sufficient UV protection, or appropriate snow goggles. The condition is usually managed by removal from the source of ultraviolet radiation, covering the corneas, and administration of pain relief. Photokeratitis is known by a number of different terms including: snow blindness, arc eye, welder's flash, bake eyes, corneal flash burns, flash burns, niphablepsia, or keratoconjunctivitis photoelectrica. Signs and symptoms Common symptoms include pain, intense tears, eyelid tw ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Glacier
A glacier (; ) is a persistent body of dense ice that is constantly moving under its own weight. A glacier forms where the accumulation of snow exceeds its Ablation#Glaciology, ablation over many years, often Century, centuries. It acquires distinguishing features, such as Crevasse, crevasses and Serac, seracs, as it slowly flows and deforms under stresses induced by its weight. As it moves, it abrades rock and debris from its substrate to create landforms such as cirques, moraines, or fjords. Although a glacier may flow into a body of water, it forms only on land and is distinct from the much thinner sea ice and lake ice that form on the surface of bodies of water. On Earth, 99% of glacial ice is contained within vast ice sheets (also known as "continental glaciers") in the polar regions, but glaciers may be found in mountain ranges on every continent other than the Australian mainland, including Oceania's high-latitude oceanic island countries such as New Zealand. Between lati ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Drift Ice
Drift ice, also called brash ice, is sea ice that is not attached to the shoreline or any other fixed object (shoals, grounded icebergs, etc.).Leppäranta, M. 2011. The Drift of Sea Ice. Berlin: Springer-Verlag. Unlike fast ice, which is "fastened" to a fixed object, drift ice is carried along by winds and sea currents, hence its name. When drift ice is driven together into a large single mass (>70% coverage), it is called pack ice. Wind and currents can pile up that ice to form ridges up to tens of metres in thickness. These represent a challenge for icebreakers and offshore structures operating in cold oceans and seas. Drift ice consists of ice floes, individual pieces of sea ice or more across. Floes are classified according to size: ''small'' – to ; ''medium'' – to ; ''big'' – to ; ''vast'' – to ; and ''giant'' – more than . Drift ice affects: * Security of navigation * Climatic impact (see Polar ice packs) * Geological impact * Biosphere influence (see Ecol ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Beau Riffenburgh
Beau Riffenburgh (born 1955) is an author and historian specializing in polar exploration. He is also an American football coach and author of books on football history. Early career A native of California, Riffenburgh was the Senior Writer and Director of Research for National Football League Properties in the eighties and early nineties. While there, he wrote or edited seven books, including the NFL's official encyclopedia. He served briefly as Editor-in-Chief for Total Sports Publishing. Polar research Riffenburgh earned his doctorate degree at the Scott Polar Research Institute at the University of Cambridge. He has written or edited numerous books on polar exploration, including ''The Myth of the Explorer'', a scholarly examination of the relationship of the popular press with exploration; ''Shackleton's Forgotten Expedition'', the story of Ernest Shackleton's Nimrod Expedition, which almost attained both the South Pole and the South Magnetic Pole; and ''Racing with Death' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cape Royds
Cape Royds is a dark rock cape forming the western extremity of Ross Island, facing on McMurdo Sound, Antarctica. It was discovered by the Discovery Expedition (1901–1904) and named for Lieutenant Charles Royds, Royal Navy, who acted as meteorologist on the expedition. Royds subsequently rose to become an Admiral and was later Commissioner of the Metropolitan Police, London. There is a hut at Cape Royds built and used by Ernest Shackleton and his team during their 1907–1909 expedition. Shackleton's Hut When Shackleton went into McMurdo Sound in 1908, having failed to land on King Edward VII Land, he decided to build a hut at Cape Royds, a small promontory twenty-three miles north of Hut Point where Scott had stayed during the Discovery Expedition. The whole shore party lived in this hut through the winter of 1908. When spring came stores were sledged to Hut Point, so that should the sea-ice break up early between these two places they might not be left in an awkward pos ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Eric Marshall
Lieutenant Colonel Eric Marshall (29 May 1879 – 26 February 1963) was a British Army doctor and Antarctic explorer with the Nimrod Expedition led by Ernest Shackleton in 1907–09, and was one of the party of four men (Marshall, Shackleton, Jameson Adams and Frank Wild) who reached Furthest South at on 9 January 1909. Biography Born in Hampstead, Surrey, on 29 May 1879, he was educated at Monkton Combe School, Bath and at Emmanuel College, Cambridge, before qualifying as a surgeon from St Bartholomew's Hospital. Marshall met Shackleton in 1906 at a house party in London. Shackleton told him about the proposed expedition to the South Pole and suggested Marshall go on a training course on surveying and then he could become the expedition's surgeon, surveyor and cartographer as well as the principal photographer. According to Leif Mills, who has written about the two men in ''Polar Friction: the relationship between Marshall and Shackleton, 2012'', Marshall was "an indispe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
South Pole
The South Pole, also known as the Geographic South Pole, Terrestrial South Pole or 90th Parallel South, is one of the two points where Earth's axis of rotation intersects its surface. It is the southernmost point on Earth and lies antipodally on the opposite side of Earth from the North Pole, at a distance of 12,430 miles (20,004 km) in all directions. Situated on the continent of Antarctica, it is the site of the United States Amundsen–Scott South Pole Station, which was established in 1956 and has been permanently staffed since that year. The Geographic South Pole is distinct from the South Magnetic Pole, the position of which is defined based on Earth's magnetic field. The South Pole is at the centre of the Southern Hemisphere. Geography For most purposes, the Geographic South Pole is defined as the southern point of the two points where Earth's axis of rotation intersects its surface (the other being the Geographic North Pole). However, Earth's axis of rotat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Shackleton Nimrod 46
Sir Ernest Henry Shackleton (15 February 1874 – 5 January 1922) was an Anglo-Irish Antarctic explorer who led three British expeditions to the Antarctic. He was one of the principal figures of the period known as the Heroic Age of Antarctic Exploration. Born in Kilkea, County Kildare, Ireland, Shackleton and his Anglo-Irish family moved to Sydenham in suburban south London when he was ten. Shackleton's first experience of the polar regions was as third officer on Captain Robert Falcon Scott's ''Discovery'' expedition of 1901–1904, from which he was sent home early on health grounds, after he and his companions Scott and Edward Adrian Wilson set a new southern record by marching to latitude 82°S. During the ''Nimrod'' expedition of 1907–1909, he and three companions established a new record Farthest South latitude at 88°S, only 97 geographical miles (112 statute miles or 180 kilometres) from the South Pole, the largest advance to the pole in expl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Royal Naval Reserve
The Royal Naval Reserve (RNR) is one of the two volunteer reserve forces of the Royal Navy in the United Kingdom. Together with the Royal Marines Reserve, they form the Maritime Reserve. The present RNR was formed by merging the original Royal Naval Reserve, created in 1859, and the Royal Naval Volunteer Reserve (RNVR), created in 1903. The Royal Naval Reserve has seen action in World War I, World War II, the Iraq War, and War in Afghanistan. History Establishment The Royal Naval Reserve (RNR) has its origins in the Register of Seamen, established in 1835 to identify men for naval service in the event of war, although just 400 volunteered for duty in the Crimean War in 1854 out of 250,000 on the Register. This led to a Royal Commission on Manning the Navy in 1858, which in turn led to the Naval Reserve Act of 1859. This established the RNR as a reserve of professional seamen from the British Merchant Navy and fishing fleets, who could be called upon during times of war ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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