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Bismarck Sea
The Bismarck Sea (, ) lies in the south-western Pacific Ocean within the Papua New Guinea, Papua New Guinean exclusive economic zone. It is located north-east of the island of New Guinea and south of the Bismarck Archipelago. It has coastlines in districts of the Islands Region, Momase Region, and Papua Region. Geography Like the Bismarck Archipelago, it is named in honour of the first German Chancellor Otto von Bismarck. The Bismarck Archipelago extends round to the east and north of the sea, enclosing the Bismarck Sea and separating it from the Southern Pacific Ocean. To the south it is linked to the Solomon Sea by the Vitiaz Strait. Official boundaries The International Hydrographic Organization defines the Bismarck Sea as "that area of the Pacific Ocean, South Pacific Ocean off the northeast coast of New Guinea", with the following limits: ''On the North and East.'' By the Northern and Northeastern coasts of the islands of New Ireland (island), New Ireland, New Hanove ... [...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] |
Earthquake
An earthquakealso called a quake, tremor, or tembloris the shaking of the Earth's surface resulting from a sudden release of energy in the lithosphere that creates seismic waves. Earthquakes can range in intensity, from those so weak they cannot be felt, to those violent enough to propel objects and people into the air, damage critical infrastructure, and wreak destruction across entire cities. The seismic activity of an area is the frequency, type, and size of earthquakes experienced over a particular time. The seismicity at a particular location in the Earth is the average rate of seismic energy release per unit volume. In its most general sense, the word ''earthquake'' is used to describe any seismic event that generates seismic waves. Earthquakes can occur naturally or be induced by human activities, such as mining, fracking, and nuclear weapons testing. The initial point of rupture is called the hypocenter or focus, while the ground level directly above it is the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Volcanic Arc
A volcanic arc (also known as a magmatic arc) is a belt of volcanoes formed above a subducting oceanic tectonic plate, with the belt arranged in an arc shape as seen from above. Volcanic arcs typically parallel an oceanic trench, with the arc located further from the subducting plate than the trench. The oceanic plate is saturated with water, mostly in the form of hydrous minerals such as micas, amphiboles, and serpentines. As the oceanic plate is subducted, it is subjected to increasing pressure and temperature with increasing depth. The heat and pressure break down the hydrous minerals in the plate, releasing water into the overlying mantle. Volatiles such as water drastically lower the melting point of the mantle, causing some of the mantle to melt and form magma at depth under the overriding plate. The magma ascends to form an arc of volcanoes parallel to the subduction zone. Volcanic arcs are distinct from volcanic chains formed over hotspots in the middle of a tecton ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tectonic
Tectonics ( via Latin ) are the processes that result in the structure and properties of the Earth's crust and its evolution through time. The field of ''planetary tectonics'' extends the concept to other planets and moons. These processes include those of mountain-building, the growth and behavior of the strong, old cores of continents known as cratons, and the ways in which the relatively rigid plates that constitute the Earth's outer shell interact with each other. Principles of tectonics also provide a framework for understanding the earthquake and volcanic belts that directly affect much of the global population. Tectonic studies are important as guides for economic geologists searching for fossil fuels and ore deposits of metallic and nonmetallic resources. An understanding of tectonic principles can help geomorphologists to explain erosion patterns and other Earth-surface features. Main types of tectonic regime Extensional tectonics Extensional tectonic ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Umboi Island
Umboi (also named Rooke or Siassi) is a volcanic island between the mainland of Papua New Guinea and the island of New Britain. It is separated from New Britain by the Dampier Strait, and Huon Peninsula and New Guinea by the Vitiaz Strait. It has an elevation of . The Siassi Archipelago lies off the southeast coast of Umboi Island (a total of 18 islands, only seven are inhabited). History During the mid-1920s, the population of the Siassi Islands was a little over 700 people. It had more than doubled (to almost 1700 people) by the early 1960s, and then decreased to a little more than 1600 people by the early 1980s. In 1936 a Lutheran mission was established on the island which was headed by Pastor P.H Freund. in 1940 Freund was recruited by Lt. Commander Eric Feldt of the Royal Australian Navy to act as a Coastwatcher. During 1943 the island was briefly occupied by 500 Japanese troops from the 51st Reconnaissance Regiment which was commanded by Col. Jiro Sato. By early Dece ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
New Britain
New Britain () is the largest island in the Bismarck Archipelago, part of the Islands Region of Papua New Guinea. It is separated from New Guinea by a northwest corner of the Solomon Sea (or with an island hop of Umboi Island, Umboi the Dampier Strait (Papua New Guinea), Dampier and Vitiaz Straits) and from New Ireland (island), New Ireland by St. George's Channel (Papua New Guinea), St. George's Channel. The main towns of New Britain are Rabaul/Kokopo and Kimbe. The island is roughly the size of Taiwan. When the island was part of German New Guinea, its name was Neupommern ("New Pomerania"). In common with most of the Bismarcks it was largely formed by volcanic processes, and has active volcanoes including Ulawun (highest volcano nationally), Langila, the Garbuna Group, the Sulu Range, and the volcanoes Tavurvur and Vulcan (volcano), Vulcan of the Rabaul caldera. A major eruption of Tavurvur in 1994 destroyed the East New Britain provincial capital of Rabaul. Most of the to ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Wuvulu Island
Wuvulu Island (also known as Mary Island, Matty, Maty Island, Tiger Island, Tiger-Inseln and Wuwulu) is part of the Western Islands of the Bismarck Archipelago in the western Pacific Ocean, part of Manus Province, Papua New Guinea. It is the westernmost island of the thirteen island groups that make up island chain in the archipelago. It is an island of volcanic origin encircled by a coral reef with a maximum height of three meters (10 feet) above sea level. People on the island speak the Wuvulu-Aua language, a Western Admiralty Islands language, which is of Austronesian stock. The first sighting by Europeans of Wuvulu Island was by the Spanish navigator Iñigo Órtiz de Retes on 27 July 1545 when on board of the carrack ''San Juan'' tried to return from Tidore to New Spain. He charted this island together with the nearby islands, Aua and Manu, as ''La Barbada'' (the bearded island in Spanish).Sharp, Andrew ''The discovery of the Pacific Islands'' Clarendon Press, Oxford ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aua Island
Aua is an island in the Bismarck Archipelago. It is part of the Western Islands within Manus Province of northern Papua New Guinea. History The first sighting by Europeans of Aua island was by the Spanish navigator Iñigo Órtiz de Retes on 27 July 1545 when on board of the carrack ''San Juan'' tried to return from Tidore to New Spain New Spain, officially the Viceroyalty of New Spain ( ; Nahuatl: ''Yankwik Kaxtillan Birreiyotl''), originally the Kingdom of New Spain, was an integral territorial entity of the Spanish Empire, established by Habsburg Spain. It was one of several .... He charted this island together with the nearby islands, Wuvulu and Manu, as ''La Barbada'' (the bearded island in Spanish). Inhabitants The genetic makeup of the island is especially diverse when contrasted against the surrounding islands in the Bismark Archipelago, the inhabitants descend from various stocks of Papuan, Melanesian, Polynesian, and Micronesian peoples. See also * * ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Admiralty Islands
The Admiralty Islands are an archipelago group of 40 islands in the Bismarck Archipelago, to the north of New Guinea in the South Pacific Ocean. These are also sometimes called the Manus Islands, after the largest island. These rainforest-covered islands constitute Manus Province, the smallest and least-populous province of Papua New Guinea, in its Islands Region. The total area is . The province had a population of 60,485 at the 2011 Census. Many of the smaller Admiralty Islands are atolls and uninhabited. Islands The larger islands in the center of the group are Manus Island and Los Negros Island. The other larger islands are Tong Island, Pak Island, Rambutyo Island, Lou Island, and Baluan Island to the east, Mbuke Island to the south and Bipi Island to the west of Manus Island. Other islands that have been noted as significant places in the history of Manus include Ndrova Island, Pityilu Island and Ponam Island. Geography The temperature of the Admiralty Isla ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
