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Transcontinental Traverse
The Transcontinental Traverse (TCT) was a geodetic survey traverse conducted in the Continental United States by the U.S. Coast and Geodetic Survey between 1961 and 1976. It was the most accurate large-area survey ever done prior to Global Positioning System surveys. TCT included over 2,700 survey stations, covered over 13,600 miles, and passed through 44 states. This nationwide survey increased the accuracy of the existing U.S. survey network. It was also fundamental to the sophisticated mathematical readjustment of the nation's survey network known as the North American Datum of 1983. It was the "end of an era" as the last conventional, purely terrestrial large scale survey. Forerunner surveys The first major transcontinental survey was the Transcontinental Arc of Triangulation, completed in 1896 along the 39th parallel north with coastal endpoints at Cape May, New Jersey, and Point Arena, California lighthouses. It established the Meades Ranch survey marker, also called the Ge ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Transcontinental Traverse Map From Geodesy For The Layman
Transcontinental may refer to: Arts, entertainment, and media * "Transcontinental", a song by the band Pedro the Lion from the album ''Achilles Heel'' * TC Transcontinental, a publishing, media and marketing company based in Canada, a subsidiary of Transcontinental Inc * ''The Transcontinental'', a South Australian weekly newspaper published in Port Augusta Transport * First transcontinental railroad, United States, 1869 * Ford Transcontinental, a truck manufactured by Ford of Britain * National Transcontinental Railway, an historic Canadian railway company * Transcontinental airspeed record * ''Transcontinental Express'', a train that arrived in San Francisco in 1876 83 hours and 39 minutes after having left New York City * Transcontinental flight, a flight across a continent, such as from the Atlantic Ocean to the Pacific across the U.S. * Transcontinental railroad, a railway that crosses a continent, typically from coast to coast *Transcontinental walk, crossing a continent on f ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Coast And Geodetic Survey
The United States Coast and Geodetic Survey (abbreviated USC&GS), known from 1807 to 1836 as the Survey of the Coast and from 1836 until 1878 as the United States Coast Survey, was the first scientific agency of the United States Government. It existed from 1807 to 1970, and throughout its history was responsible for mapping and charting the coast of the United States, and later the coasts of U.S. territories. In 1871, it gained the additional responsibility of surveying the interior of the United States and geodesy became a more important part of its work, leading to it being renamed the U.S. Coast and Geodetic Survey in 1878. Long the U.S. Government's only scientific agency, the Survey accumulated other scientific and technical responsibilities as well, including astronomy, cartography, meteorology, geology, geophysics, hydrography, navigation, oceanography, exploration, pilotage, tides, and topography. It also was responsible for the standardization of weights and measures th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Great Trigonometrical Survey
The Great Trigonometrical Survey was a project that aimed to survey the entire Indian subcontinent with scientific precision. It was begun in 1802 by the British infantry officer William Lambton, under the auspices of the East India Company.Gill, B. (2001); "THE BIG MAN. Surveying Sir George Everest", in: ''Professional Surveyor Magazine'', Vol. 21 Nr 2. Retrieveonline 8 March 2016. Under the leadership of his successor, George Everest, the project was made the responsibility of the Survey of India. Everest was succeeded by Andrew Scott Waugh, and after 1861, the project was led by James Walker, who oversaw its completion in 1871. Among the many accomplishments of the Survey were the demarcation of the British territories in India and the measurement of the height of the Himalayan giants: Everest, K2, and Kanchenjunga. The Survey had an enormous scientific impact as well, being responsible for one of the first accurate measurements of a section of an arc of longitude, and for ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Geodetic Control Network
A geodetic control network (also geodetic network, reference network, control point network, or control network) is a network, often of triangles, which are measured precisely by techniques of terrestrial surveying or by satellite geodesy. A geodetic control network consists of stable, identifiable points with published datum values derived from observations that tie the points together. Classically, a control is divided into horizontal (X-Y) and vertical (Z) controls (components of the control), however with the advent of satellite navigation systems, GPS in particular, this division is becoming obsolete. Many organizations contribute information to the geodetic control network. The higher-order (high precision, usually millimeter-to-decimeter on a scale of continents) control points are normally defined in both space and time using global or space techniques, and are used for "lower-order" points to be tied into. The lower-order control points are normally used for engine ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Beltsville, Maryland
Beltsville is a census-designated place (CDP) in northern Prince George's County, Maryland, United States. The community was named for Truman Belt, a local landowner. The 2020 census counted 20,133 residents. Beltsville includes the unincorporated community of Vansville. Geography Beltsville is located at (39.037509, −76.917847), adjacent to the Montgomery County – Prince George's County line. It is approximately northeast of the Maryland border with Washington. According to the United States Census Bureau, Beltsville has a total area of , of which is land and , or 0.38%, is water. Climate The climate in this area is characterized by hot, humid summers and generally mild to cool winters. According to the Köppen Climate Classification system, Beltsville has a humid subtropical climate, abbreviated "Cfa" on climate maps. Demographics 2020 census ''Note: the US Census treats Hispanic/Latino as an ethnic category. This table excludes Latinos from the racial categor ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chandler, Minnesota
Chandler is a town in Murray County, Minnesota, United States. The population was 270 at the 2010 census. Geography According to the United States Census Bureau, the city has a total area of , all land. Minnesota State Highway 91 and Murray County Roads 4 and 5 are the main routes in the community. Demographics 2010 census As of the census of 2010, there were 270 people, 109 households, and 75 families living in the city. The population density was . There were 120 housing units at an average density of . The racial makeup of the city was 88.9% White, 0.7% African American, 9.6% from other races, and 0.7% from two or more races. Hispanic or Latino of any race were 22.6% of the population. There were 109 households, of which 32.1% had children under the age of 18 living with them, 57.8% were married couples living together, 6.4% had a female householder with no husband present, 4.6% had a male householder with no wife present, and 31.2% were non-families. 26.6% of all house ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Moses Lake, Washington
Moses Lake is a city in Grant County, Washington, United States. The population was 25,146 as of the 2020 census. Moses Lake is the largest city in Grant County. The city anchors the Moses Lake Micropolitan area, which includes all of Grant County and is part of the Moses Lake–Othello combined statistical area. Moses Lake, on which the city lies, is made up of three main arms over long and up to one mile (1.6 km) wide. It is the largest natural body of fresh water in Grant County and has over of shoreline covering . Before it was dammed in the early 1900s and then incorporated into the Columbia Basin Project, Moses Lake was a smaller shallow lake. To the south of the town is the Potholes Reservoir and the Columbia National Wildlife Refuge that has a number of seep lakes and vast amounts of migratory birds and other fauna natural to the area. History Before the construction of Grand Coulee Dam on the Columbia River in 1941 and Moses Lake Army Air Base in 1942 the a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Satellite Triangulation
Stellar triangulation is a method of geodesy and of its subdiscipline space geodesy used to measure Earth's geometric shape. Stars were first used for this purpose by the Finnish astronomer Yrjö Väisälä in 1959, who made astrometric photographs of the night sky at two stations together with a lighted balloon probe between them. Even this first step showed the potential of the method, as Väisälä got the azimuth between Helsinki and Turku (a distance of 150 km) with an accuracy of 1″. Soon the method was successfully tested by ballistic rockets and for some special satellites. Adequate computer programs were written for * the astrometric reduction of the photographic plates, * the intersection of the "observation planes" containing the stations and the targets, * and the least-squares adjustment of stellar-terrestrial networks with redundancy. The advantages of stellar triangulation were the possibility to cross far distances (terrestrial observations are restrict ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Australian Web Archive
The Australian Web Archive (AWA) is an publicly available online database of archived Australian websites, hosted by the National Library of Australia (NLA) on its Trove platform, an online library database aggregator. It comprises the NLA's own PANDORA archive, the Australian Government Web Archive (AGWA) and the National Library of Australia's ".au" domain collections. Access is through a single interface in Trove, which is publicly available. The Australian Web Archive was created in March 2019, and is one of the biggest web archives in the world. Its purpose is to provide a resource for historians and researchers, now and into the future. History of the three components The PANDORA service started archiving websites in October 1996. In 2005, the NLA started archiving annual snapshots of the entire Australian web domain ( URLs with the suffix. ".au"), collected via large crawl harvests. Later, the earliest websites from the .au web domain, dating back to 1996, were obtained ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bilby Tower
A Bilby tower is a type of steel surveying, survey tower used by the United States Coast and Geodetic Survey from 1927 to 1984. It is named after Jasper S. Bilby who designed it in 1926. In 1927, Herbert Hoover, then the Secretary of Commerce, commended Bilby's tower "for its cost and time efficiency" and cited the surveyor's service as "essential to the United States government". Features The Bilby tower has two unconnected parts – an internal tower for mounting surveying instruments and an external tower for surveyors. This separation allowed for isolating the instruments from the vibrations induced by people, which increased the precision of measurements. It was portable, reusable and quick to assemble and dismantle. Its quick erection made it possible to conduct surveying rapidly. The last Bilby tower The last remaining tower, at St. Charles Parish, Louisiana, was dismantled by the Surveyors Historical Society in 2012 and re-erected in 2013 at the Osgood Trails Park in Os ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
