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D'Entrecasteaux Islands
D'Entrecasteaux Islands () are situated near the eastern tip of New Guinea in the Solomon Sea in Milne Bay Province of Papua New Guinea. The group spans a distance of , has a total land area of approximately and is separated from the Papua New Guinea mainland by the wide Ward Hunt Strait in the north and the wide Goschen Strait in the south. D'Entrecasteaux Islands show signs of volcanism. Description The three principal islands, from northwest to southeast, are Goodenough Island, Goodenough (Nidula), then across Moresby Strait to Fergusson Island, Fergusson (Moratau), the largest of the three, and across Dawson Strait to Normanby Island (Papua New Guinea), Normanby Island (Duau). In addition there are numerous small islands and reefs. Sanaroa Island, Sanaroa and Dobu Island, Dobu are the most significant of the smaller islands, while Sori or Wild is named for Challenger expedition, HMS ''Challengers artist, John James Wild. The highest peak in the group is the Mount Vineuo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Oceania
Oceania ( , ) is a region, geographical region including Australasia, Melanesia, Micronesia, and Polynesia. Outside of the English-speaking world, Oceania is generally considered a continent, while Mainland Australia is regarded as its continental landmass. Spanning the Eastern Hemisphere, Eastern and Western Hemisphere, Western hemispheres, at the centre of the land and water hemispheres, water hemisphere, Oceania is estimated to have a land area of about and a population of around 46.3 million as of 2024. Oceania is the smallest continent in land area and the list of continents and continental subregions by population, second-least populated after Antarctica. Oceania has a diverse mix of economies from the developed country, highly developed and globally competitive market economy, financial markets of Australia, French Polynesia, Hawaii, New Caledonia, and New Zealand, which rank high in quality of life and Human Development Index, to the much least developed countries ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Geothermal Activity
Geothermal activity is a group of natural heat transfer processes, occurring on Earth's surface, caused by the presence of excess heat in the subsurface of the affected area, usually caused by the presence of an igneous intrusion underground. Geothermal activity can manifest itself in a variety of different phenomena, including, among others, elevated surface temperatures, various forms of hydrothermal activity, and the presence of Fumarole, fumaroles that emit hot Volcanic gas, volcanic gases. Background physics Geothermal activity mostly appears in volcanic provinces, where it is fueled by the presence of a magma chamber. In some rare cases it can be caused by Coal-seam fire, underground fires or by large deposits of radioactive elements. Other sources of internal heating can be Planetary differentiation, gravitational differentiation of substances, tidal friction, metamorphism, or phase transitions. The release of heat to the surface occurs either in the form of a conductive h ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Australia
Australia, officially the Commonwealth of Australia, is a country comprising mainland Australia, the mainland of the Australia (continent), Australian continent, the island of Tasmania and list of islands of Australia, numerous smaller islands. It has a total area of , making it the list of countries and dependencies by area, sixth-largest country in the world and the largest in Oceania. Australia is the world's flattest and driest inhabited continent. It is a megadiverse countries, megadiverse country, and its size gives it a wide variety of landscapes and Climate of Australia, climates including deserts of Australia, deserts in the Outback, interior and forests of Australia, tropical rainforests along the Eastern states of Australia, coast. The ancestors of Aboriginal Australians began arriving from south-east Asia 50,000 to 65,000 years ago, during the Last Glacial Period, last glacial period. By the time of British settlement, Aboriginal Australians spoke 250 distinct l ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Imperial Japanese
The Empire of Japan, also known as the Japanese Empire or Imperial Japan, was the Japanese nation state that existed from the Meiji Restoration on January 3, 1868, until the Constitution of Japan took effect on May 3, 1947. From 1910 to 1945, it included the Japanese archipelago, the Kurils, Karafuto, Korea, and Taiwan. The South Seas Mandate and concessions such as the Kwantung Leased Territory were ''de jure'' not internal parts of the empire but dependent territories. In the closing stages of World War II, with Japan defeated alongside the rest of the Axis powers, the formalized surrender was issued on September 2, 1945, in compliance with the Potsdam Declaration of the Allies, and the empire's territory subsequently shrunk to cover only the Japanese archipelago resembling modern Japan. Under the slogans of "Enrich the Country, Strengthen the Armed Forces" and "Promote Industry" which followed the Boshin War and the restoration of power to the emperor from the shogu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
World War II
World War II or the Second World War (1 September 1939 – 2 September 1945) was a World war, global conflict between two coalitions: the Allies of World War II, Allies and the Axis powers. World War II by country, Nearly all of the world's countries participated, with many nations mobilising all resources in pursuit of total war. Tanks in World War II, Tanks and Air warfare of World War II, aircraft played major roles, enabling the strategic bombing of cities and delivery of the Atomic bombings of Hiroshima and Nagasaki, first and only nuclear weapons ever used in war. World War II is the List of wars by death toll, deadliest conflict in history, causing World War II casualties, the death of 70 to 85 million people, more than half of whom were civilians. Millions died in genocides, including the Holocaust, and by massacres, starvation, and disease. After the Allied victory, Allied-occupied Germany, Germany, Allied-occupied Austria, Austria, Occupation of Japan, Japan, a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Diamond Jenness
Diamond Jenness, (February 10, 1886, Wellington, New Zealand – November 29, 1969, Chelsea, Quebec, Canada) was one of Canada's greatest early scientists and a pioneer of Canadian anthropology. Early life (1886–1910) Family and childhood Diamond Jenness was the second youngest son in a middle-class family of ten children. His father's profession was that of a watchmaker/jeweler, though he also installed several clocks in municipal building towers in New Zealand. The family was encouraged to read, learn music, and engage in sports. Richling, in his biography “In Twilight and in Dawn,” writes that the young Jenness “was a proficient outdoorsman and an accomplished sharpshooter,” skills that helped prepare him for his experience in the arctic years later. Education At an early age, Jenness showed proficiency for learning. He earned his first scholarship at the age of twelve by entering a composition competition for children under fourteen. In those days, in New ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Running Survey
A running survey is a rough survey made by a vessel while coasting. Bearings to landmarks are taken at intervals as the vessel sails offshore, and are used to fix features on the coast and further inland. Intervening coastal detail is sketched in. The method was used by James Cook, and subsequently by navigators who sailed under—or were influenced by—him, including George Vancouver, William Bligh and Matthew Flinders Captain (Royal Navy), Captain Matthew Flinders (16 March 1774 – 19 July 1814) was a British Royal Navy officer, navigator and cartographer who led the first littoral zone, inshore circumnavigate, circumnavigation of mainland Australia, then .... References Navigation Surveying James Cook {{Hydrography-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
John Moresby
Rear Admiral John Moresby (15 March 1830 – 12 July 1922) was a British naval officer who explored the coast of New Guinea and was the first European to discover the site of Port Moresby. Life and career Moresby was born in Allerford, Somerset, England, the son of Eliza Louisa and Admiral of the Fleet Sir Fairfax Moresby. He joined the navy at an early age as a Volunteer 1st Class in HMS ''Victor''. On 23 January 1871, he was appointed to the command of the 1,031 ton paddle steamer cruiser HMS ''Basilisk'', in which he made hydrological surveys around eastern New Guinea. During the survey of the southern coast he discovered the harbour which he named Fairfax after his father. The town established there, based on already existing native villages (principally Hanuabada) was named Port Moresby and is now the nation's capital. Moresby was also searching for a shorter route between Australia and China and on the eastern tip of the island he discovered the China Strait. He cont ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Jean-François De Galaup, Comte De La Pérouse
Jean-François () is a French given name. Notable people bearing the given name include: * Jean-François Carenco (born 1952), French politician * Jean-François Champollion (1790–1832), French Egyptologist * Jean-François Clervoy (born 1958), French engineer and astronaut * Jean-François Corminboeuf (born 1953), Swiss sport sailor * Jean-François Coulomme (born 1966), French politician * Jean-François Dagenais (born 1975), Canadian music producer * Jean-François David (born 1982), Canadian ice hockey player * Jean-François Gariépy (born 1984), Canadian alt-right political commentator and former neuroscientist * Jean-François Garreaud (1946–2020), French actor * Jean-François de La Harpe (1739–1803), French critic * Jean-François Larose (born 1972), Canadian politician * Jean-François Lyotard (1924–1998), French philosopher * Jean-François Marceau (born 1976), Canadian judoka * Jean-François Marmontel (1723–1799), French historian and writer * Jean-F ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
French Ship Espérance (1781)
''Espérance'' was a ''Rhône''-class scow of the French Navy, launched in 1781 and later reclassified as a frigate. She earned fame as one of the ships of Bruni d'Entrecasteaux's expedition. The Australian town of Esperance and Esperance Bay in Western Australia were named after her. She was sold for breaking up in 1794. Career ''Espérance'' was built as ''Durance'' and served in de Grasse's squadron as a troopship. On 18 December 1782, she departed Toulon with the frigates ''Précieuse'' and ''Prosélyte'', and the corvette , in a convoy bound for the Caribbean, that also included the fluyts ''Gracieuse'' and ''Rhône''. A decade later, on 29 September 1791, ''Espérance'' under Captain Huon de Kermadec, and sailed from Brest to New Caledonia. They were on a mission under the command of Admiral d'Entrecasteaux in search of the explorer Lapérouse. The mission was unsuccessful: it was not until 1826 that the mystery of Laperouse's disappearance was solved. Fate On 28 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Antoine Bruni D'Entrecasteaux
Antoine Raymond Joseph de Bruni, chevalier d'Entrecasteaux (; 8 November 1737 – 21 July 1793) was a French Navy officer, explorer and colonial administrator who served as the Governor of Isle de France (Mauritius), governor of Isle de France from 1787 to 1789. He is best known for his exploration of the Australian coast in 1792 while searching for Jean-François de Galaup, comte de Lapérouse. Early career Bruni d'Entrecasteaux was born to Dorothée de Lestang-Parade and Jean Baptiste Bruny, at Aix-en-Provence in 1739. His father was a member of the ''Parlement'' of Provence. Antoine Bruni d'Entrecasteaux was educated at a Jesuit school and reportedly intended to become a priest in the Society of Jesus, but his father intervened and enlisted him in the French Navy in 1754. In the Battle of Minorca (1756), Battle of Minorca, which secured the Balearic Islands for France, Bruni d'Entrecasteaux served as a midshipman aboard the 26-gun ''Minerve'', and in April 1757 he was com ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Thermal Ionization Mass Spectrometry
Thermal ionization mass spectrometry (TIMS), also known as surface ionization, is a highly sensitive isotope mass spectrometry characterization technique. The isotopic ratios of radionuclides are used to get an accurate measurement for the elemental analysis of a sample. Singly charged ions of the sample are formed by the thermal ionization effect. A chemically purified liquid sample is placed on a metal filament which is then heated to evaporate the solvent. The removal of an electron from the purified sample is consequently achieved by heating the filament enough to release an electron, which then ionizes the atoms of the sample. TIMS utilizes a magnetic sector mass analyzer to separate the ions based on their mass to charge ratio. The ions gain velocity by an electrical potential gradient and are focused into a beam by electrostatic lenses. The ion beam then passes through the magnetic field of the electromagnet where it is partitioned into separate ion beams based on the ion's ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
