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1985 In Archaeology
The year 1985 in archaeology involved some significant events. Excavations * April - Engine of SS ''Xantho'' (sunk 1872) recovered off Western Australia. * June 21 - 1928 Scania truck (sunk 1936) recovered from Fryken in Sweden. * September - British Vickers Wellington IA medium bomber ''N2980'' (crashed 1940) recovered from Loch Ness in Scotland. Explorations * Sagalassos (Turkey) surveyed. Finds * July 20 - The main shipwreck site of the Spanish galleon '' Nuestra Señora de Atocha'' (which sank in 1622) is found off the coast of Key West, Florida by treasure hunters who soon begin to raise $400 million in coins and silver. * September 1 - The shipwreck of the RMS ''Titanic'' (1912) in the North Atlantic is located by a joint American-French expedition led by Dr Robert Ballard ( WHOI) and Jean-Louis Michel ( Ifremer) using side-scan sonar from RV ''Knorr''. * October 13 - A hoard of coins of the Durotriges tribe is found in the rampart of Castle Rings, Wilts ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
North Atlantic
The Atlantic Ocean is the second-largest of the world's five oceans, with an area of about . It covers approximately 20% of Earth's surface and about 29% of its water surface area. It is known to separate the "Old World" of Africa, Europe and Asia from the "New World" of the Americas in the European perception of the World. The Atlantic Ocean occupies an elongated, S-shaped basin extending longitudinally between Europe and Africa to the east, and North and South America to the west. As one component of the interconnected World Ocean, it is connected in the north to the Arctic Ocean, to the Pacific Ocean in the southwest, the Indian Ocean in the southeast, and the Southern Ocean in the south (other definitions describe the Atlantic as extending southward to Antarctica). The Atlantic Ocean is divided in two parts, by the Equatorial Counter Current, with the North(ern) Atlantic Ocean and the South(ern) Atlantic Ocean split at about 8°N. Scientific explorations of the Atlantic ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Metal Detectorist
A metal detector is an instrument that detects the nearby presence of metal. Metal detectors are useful for finding metal objects on the surface, underground, and under water. The unit itself, consist of a control box, and an adjustable shaft, which holds a pickup coil, which can vary in shape and size. If the pickup coil comes near a piece of metal, the control box will register its presence by a changing tone, a flashing light, and or by a needle moving on an indicator. Usually the device gives some indication of distance; the closer the metal is, the higher the tone in the earphone or the higher the needle goes. Another common type are stationary "walk through" metal detectors used at access points in prisons, courthouses, airports and psychiatric hospitals to detect concealed metal weapons on a person's body. The simplest form of a metal detector consists of an oscillator producing an alternating current that passes through a coil producing an alternating magnetic field. I ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hill Fort
A hillfort is a type of earthwork used as a fortified refuge or defended settlement, located to exploit a rise in elevation for defensive advantage. They are typically European and of the Bronze Age or Iron Age. Some were used in the post-Roman period. The fortification usually follows the contours of a hill and consists of one or more lines of earthworks, with stockades or defensive walls, and external ditches. Hillforts developed in the Late Bronze and Early Iron Age, roughly the start of the first millennium BC, and were used in many Celtic areas of central and western Europe until the Roman conquest. Nomenclature The spellings "hill fort", "hill-fort" and "hillfort" are all used in the archaeological literature. The ''Monument Type Thesaurus'' published by the Forum on Information Standards in Heritage lists ''hillfort'' as the preferred term. They all refer to an elevated site with one or more ramparts made of earth, stone and/or wood, with an external ditch. M ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Iron Age
The Iron Age is the final epoch of the three-age division of the prehistory and protohistory of humanity. It was preceded by the Stone Age (Paleolithic, Mesolithic, Neolithic) and the Bronze Age (Chalcolithic). The concept has been mostly applied to Iron Age Europe and the Ancient Near East, but also, by analogy, to other parts of the Old World. The duration of the Iron Age varies depending on the region under consideration. It is defined by archaeological convention. The "Iron Age" begins locally when the production of iron or steel has advanced to the point where iron tools and weapons replace their bronze equivalents in common use. In the Ancient Near East, this transition took place in the wake of the Bronze Age collapse, in the 12th century BC. The technology soon spread throughout the Mediterranean Basin region and to South Asia (Iron Age in India) between the 12th and 11th century BC. Its further spread to Central Asia, Eastern Europe, and Central Europe is somewhat dela ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Castle Rings, Wiltshire
Castle Rings is a univallate hill fort in the parish of Donhead St Mary in Wiltshire in England.Wiltshire and Swindon History Centre 2011. The fort is a Scheduled Ancient Monument, with a list entry identification number of 1005698.Historic England. Castle Rings has been dated to the Iron Age and is situated at an altitude of upon Upper Greensand sandstone beds. The main bulk of the fort enclosure lies within the boundaries of Donhead St Mary parish but some of the outlying earthworks are situated in the neighbouring Sedgehill and Semley parish. In the mid-1980s a metal detectorist unearthed a hoard of stater coins of the Durotriges tribe within the hill fort. Lady Theodora Grosvenor described the fort in her 1867 book ''Motcombe, Past and Present'': Physical characteristics The rampart of the fort stands high with a deep ditch; the ditch is set between double earth banks. The ditch averages wide and varies in depth to a maximum of . The inner rampart has an average wid ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Durotriges
The Durotriges were one of the Celtic tribes living in Britain prior to the Roman invasion. The tribe lived in modern Dorset, south Wiltshire, south Somerset and Devon east of the River Axe and the discovery of an Iron Age hoard in 2009 at Shalfleet, Isle of Wight gives evidence that they may also have lived in the western half of the island. After the Roman conquest, their main ''civitates'', or settlement-centred administrative units, were Durnovaria (modern Dorchester, "the probable original capital") and Lindinis (modern Ilchester, "whose former, unknown status was thereby enhanced"). Their territory was bordered to the west by the Dumnonii; and to the east by the Belgae.__NOTOC__ Name The tribe's name is known from Ptolemy's ''Geography'' and from two inscriptions on Hadrian's Wall, both dating from after the Roman conquest of Britain. It is not known if anyone referred to them as the Durotriges before they arrived in the area now known as Dorset. The name can probably be ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
National Geographic (magazine)
''National Geographic'' (formerly the ''National Geographic Magazine'', sometimes branded as NAT GEO) is a popular American monthly magazine published by National Geographic Partners. Known for its photojournalism, it is one of the most widely read magazines of all time. The magazine was founded in 1888 as a scholarly journal, nine months after the establishment of the society, but is now a popular magazine. In 1905, it began including pictures, a style for which it became well-known. Its first color photos appeared in the 1910s. During the Cold War, the magazine committed itself to present a balanced view of the physical and human geography of countries beyond the Iron Curtain. Later, the magazine became outspoken on environmental issues. Since 2019, controlling interest has been held by The Walt Disney Company. Topics of features generally concern geography, history, nature, science, and world culture. The magazine is well known for its distinctive appearance: a thick squa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
RV Knorr
RV ''Knorr'' was a research vessel formerly owned by the U.S. Navy and operated by the Woods Hole Oceanographic Institution for the U.S. research community in coordination with and as a part of the University-National Oceanographic Laboratory System (UNOLS) fleet. On March 14, 2016, ''Knorr'' was officially transferred to the Mexican Navy and renamed ''Rio Tecolutla''. She was replaced at Woods Hole by the . ''Knorr'' is best known as the ship that supported researchers as they discovered the wreck of the RMS ''Titanic'' in 1985. R/V ''Knorr'' (AGOR-15) has traveled more than a million miles—the rough equivalent of two round trips to the Moon or forty trips around the Earth. Her sister ship is the RV ''Melville''. Ship R/V ''Knorr'' was named in honor of Ernest R. Knorr, a distinguished hydrographic engineer and cartographer who was appointed Chief Engineer Cartographer of the U.S. Navy Hydrographic office in 1860. Chief Engineer Knorr was one of the leaders of the Navy’s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Side-scan Sonar
Side-scan sonar (also sometimes called side scan sonar, sidescan sonar, side imaging sonar, side-imaging sonar and bottom classification sonar) is a category of sonar system that is used to efficiently create an image of large areas of the sea floor. Uses Side-scan sonar may be used to conduct surveys for marine archaeology; in conjunction with seafloor samples it is able to provide an understanding of the differences in material and texture type of the seabed. Side-scan sonar imagery is also a commonly used tool to detect debris items and other obstructions on the seafloor that may be hazardous to shipping or to seafloor installations by the oil and gas industry. In addition, the status of pipelines and cables on the seafloor can be investigated using side-scan sonar. Side-scan data are frequently acquired along with bathymetric soundings and sub-bottom profiler data, thus providing a glimpse of the shallow structure of the seabed. Side-scan sonar is also used for fisheries ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ifremer
IFREMER (Institut Français de Recherche pour l'Exploitation de la Mer; ) is an oceanographic institution in Brest, France. Scope of works Ifremer focuses its research activities in the following areas: * Monitoring, use and enhancement of coastal seas * Monitoring and optimization of aquaculture production * Fishery resources * Exploration and exploitation of the oceans and their biodiversity * Circulation and marine ecosystems, mechanisms, trends and forecasting * Engineering of major facilities in the service of oceanography * Knowledge transfer and innovation in its fields of its activities In 1985, Ifremer partnered with Dr. Robert Ballard for an ultimately-successful expedition to locate the wreck of the ''RMS Titanic''. In 1994 Ifremer assisted in the salvage of the cargo from the ''SS John Barry''. Ifremer operates a number of vessels, including the submarine ''Nautile''. In 2008, Ifremer partnered with Dr. Bruce Shillito for the testing and initial operations o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
