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Irish National Grid Reference System
The Irish grid reference system is a system of geographic grid references used for paper mapping in Ireland (both Northern Ireland and the Republic of Ireland). The Irish grid partially overlaps the British grid, and uses a similar co-ordinate system but with a meridian more suited to its westerly location. Usage In general, neither Ireland nor Great Britain uses latitude or longitude in describing internal geographic locations. Instead grid reference systems are used for mapping. The national grid referencing system was devised by the Ordnance Survey, and is heavily used in their survey data, and in maps (whether published by the Ordnance Survey of Ireland, the Ordnance Survey of Northern Ireland or commercial map producers) based on those surveys. Additionally grid references are commonly quoted in other publications and data sources, such as guide books or government planning documents. 2001 recasting: the ITM grid In 2001, the Ordnance Survey of Ireland and the Ordnance Su ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Grid Reference
A projected coordinate system, also known as a projected coordinate reference system, a planar coordinate system, or grid reference system, is a type of spatial reference system that represents locations on the Earth using cartesian coordinates (''x'',''y'') on a planar surface created by a particular map projection. Each projected coordinate system, such as "Universal Transverse Mercator WGS 84 Zone 26N," is defined by a choice of map projection (with specific parameters), a choice of geodetic datum to bind the coordinate system to real locations on the earth, an origin point, and a choice of unit of measure. Hundreds of projected coordinate systems have been specified for various purposes in various regions. When the first standardized coordinate systems were created during the 20th Century, such as the Universal Transverse Mercator, State Plane Coordinate System, and British National Grid, they were commonly called ''grid systems''; the term is still common in some domai ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lough Ree
Lough Ree () is a lake in the midlands of Ireland, the second of the three major lakes on the River Shannon. Lough Ree is the second largest lake on the Shannon after Lough Derg. The other two major lakes are Lough Allen to the north, and Lough Derg to the south. There are also several minor lakes along the length of the river. The lake serves as a border between the counties of Longford and Westmeath (both in the province of Leinster) on the eastern side and County Roscommon in the province of Connacht on the western side. The lake is popular for fishing and boating. The lake supports a small commercial eel fishery and is locally famous for its ''eels on wheels'' truck. The town of Athlone is situated at the southern end of the lake, and has a harbour for boats going out on the lake. The small town of Lanesboro is at the northern end of the lake. The island of Inchcleraun (''Inis Cloithreann'') in the northern part of the lake is the site of a monastery founded in the early ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Geographic Coordinate Systems
The geographic coordinate system (GCS) is a spherical or ellipsoidal coordinate system for measuring and communicating positions directly on the Earth as latitude and longitude. It is the simplest, oldest and most widely used of the various spatial reference systems that are in use, and forms the basis for most others. Although latitude and longitude form a coordinate tuple like a cartesian coordinate system, the geographic coordinate system is not cartesian because the measurements are angles and are not on a planar surface. A full GCS specification, such as those listed in the EPSG and ISO 19111 standards, also includes a choice of geodetic datum (including an Earth ellipsoid), as different datums will yield different latitude and longitude values for the same location. History The invention of a geographic coordinate system is generally credited to Eratosthenes of Cyrene, who composed his now-lost ''Geography'' at the Library of Alexandria in the 3rd century BC. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Maps From Ordnance Survey
A map is a symbolic depiction emphasizing relationships between elements of some space, such as objects, regions, or themes. Many maps are static, fixed to paper or some other durable medium, while others are dynamic or interactive. Although most commonly used to depict geography, maps may represent any space, real or fictional, without regard to context or scale, such as in brain mapping, DNA mapping, or computer network topology mapping. The space being mapped may be two dimensional, such as the surface of the earth, three dimensional, such as the interior of the earth, or even more abstract spaces of any dimension, such as arise in modeling phenomena having many independent variables. Although the earliest maps known are of the heavens, geographic maps of territory have a very long tradition and exist from ancient times. The word "map" comes from the , wherein ''mappa'' meant 'napkin' or 'cloth' and ''mundi'' 'the world'. Thus, "map" became a shortened term referring to ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Geography Of Ireland
:Ireland is an island in Northwestern Europe in the north Atlantic Ocean. The island lies on the European continental shelf, part of the Eurasian Plate. The island's main geographical features include low central plains surrounded by coastal mountains. The highest peak is Carrauntoohil ( ga, Corrán Tuathail), which is above sea level. The western coastline is rugged, with many islands, peninsulas, headlands and bays. The island is bisected by the River Shannon, which at with a estuary is the longest river in Ireland and flows south from County Cavan in Ulster to meet the Atlantic just south of Limerick. There are a number of sizeable lakes along Ireland's rivers, of which Lough Neagh is the largest. Politically, the island consists of the Republic of Ireland, with jurisdiction over about five-sixths of the island, and Northern Ireland, a constituent country of the United Kingdom, with jurisdiction over the remaining sixth. Located west of the island of Great Britain, it ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Transverse Mercator
The transverse Mercator map projection (TM, TMP) is an adaptation of the standard Mercator projection. The transverse version is widely used in national and international mapping systems around the world, including the Universal Transverse Mercator. When paired with a suitable geodetic datum, the transverse Mercator delivers high accuracy in zones less than a few degrees in east-west extent. Standard and transverse aspects The transverse Mercator projection is the transverse aspect of the standard (or ''Normal'') Mercator projection. They share the same underlying mathematical construction and consequently the transverse Mercator inherits many traits from the normal Mercator: * Both projections are cylindrical: for the Normal Mercator, the axis of the cylinder coincides with the polar axis and the line of tangency with the equator. For the transverse Mercator, the axis of the cylinder lies in the equatorial plane, and the line of tangency is any chosen meridian, thereby designa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
O'Connell Street
O'Connell Street () is a street in the centre of Dublin, Republic of Ireland, Ireland, running north from the River Liffey. It connects the O'Connell Bridge to the south with Parnell Street to the north and is roughly split into two sections bisected by Henry Street, Dublin, Henry Street. The Luas tram system runs along the street. During the 17th century, it was a narrow street known as Drogheda Street, named after Henry Moore, Earl of Drogheda. It was widened in the late 18th century by the Wide Streets Commission and renamed Sackville Street (''Sráid Saicfil'') after Lionel Sackville, 1st Duke of Dorset. In 1924, it was renamed in honour of Irish nationalism, nationalist leader Daniel O'Connell, whose statue by John Henry Foley stands at the lower end of the street facing O'Connell Bridge. The street has played an important part in Irish history and features several important monuments, including statues of O'Connell and trade union leader James Larkin, as well as the Spi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Spire Of Dublin
The Spire of Dublin, alternatively titled the Monument of Light ( ga, An Túr Solais), is a large, stainless steel, pin-like monument in height, located on the site of the former Nelson's Pillar (and prior to that a statue of William Blakeney) on O'Connell Street, the main thoroughfare of Dublin, Ireland. History Following the bombing of Nelson's Pillar by former IRA members in 1966, and subsequent controlled demolition six days later of what was left, the site remained vacant for years as no decision could be reached on a suitable replacement. Eventually, the '' Anna Livia'' monument was installed on the site to celebrate the 1988 Dublin Millennium celebrations. In 1998, as part of a planned multi-million euro re-development of O'Connell Street (as well as a memorial to the upcoming millennium and the aspirations of Ireland in the midst of its Celtic Tiger economic boom), a competition was launched to find a replacement for Nelson's Pillar. O'Connell Street had been in dec ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Irish Grid
The Irish grid reference system is a system of geographic grid references used for paper mapping in Ireland (both Northern Ireland and the Republic of Ireland). The Irish grid partially overlaps the British grid, and uses a similar co-ordinate system but with a meridian more suited to its westerly location. Usage In general, neither Ireland nor Great Britain uses latitude or longitude in describing internal geographic locations. Instead grid reference systems are used for mapping. The national grid referencing system was devised by the Ordnance Survey, and is heavily used in their survey data, and in maps (whether published by the Ordnance Survey of Ireland, the Ordnance Survey of Northern Ireland or commercial map producers) based on those surveys. Additionally grid references are commonly quoted in other publications and data sources, such as guide books or government planning documents. 2001 recasting: the ITM grid In 2001, the Ordnance Survey of Ireland and the Ordnance Su ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Satellite Navigation
A satellite navigation or satnav system is a system that uses satellites to provide autonomous geo-spatial positioning. It allows satellite navigation devices to determine their location (longitude, latitude, and altitude/elevation) to high precision (within a few centimetres to metres) using time signals transmitted along a line of sight by radio from satellites. The system can be used for providing position, navigation or for tracking the position of something fitted with a receiver (satellite tracking). The signals also allow the electronic receiver to calculate the current local time to a high precision, which allows time synchronisation. These uses are collectively known as Positioning, Navigation and Timing (PNT). One set of critical vulnerabilities in satellite communications are the signals that govern positioning, navigation and timing (PNT). Failure to properly secure these transmissions could not only disrupt satellite networks but wreak havoc on a host of dependent s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
County Roscommon
"Steadfast Irish heart" , image_map = Island of Ireland location map Roscommon.svg , subdivision_type = Country , subdivision_name = Ireland , subdivision_type1 = Province , subdivision_name1 = Connacht , subdivision_type2 = Regions of Ireland, Region , subdivision_name2 = Northern and Western Region, Northern and Western , seat_type = County town , seat = Roscommon , leader_title = Local government in the Republic of Ireland, Local authority , leader_name = Roscommon County Council, County Council , leader_title2 = Dáil constituencies , leader_title3 = European Parliament constituencies in the Republic of Ireland, EP constituency , leader_name2 = Roscommon–Galway (Dáil constituency), Roscommon–Galway Sligo–Leitrim (Dáil constituency), Sligo–Leitrim , leader_name3 = Midlands–North-West (European Parliament constituency), Midlands–North-West , ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
8th Meridian West
The meridian 8° west of Greenwich is a line of longitude that extends from the North Pole across the Arctic Ocean, the Atlantic Ocean, Europe, Africa, the Southern Ocean, and Antarctica to the South Pole. The 8th meridian west forms a great circle with the 172nd meridian east. From Pole to Pole Starting at the North Pole and heading south to the South Pole, the 8th meridian west passes through: : Ordnance Survey Ireland The Irish grid reference system uses the point as its true origin. See also *7th meridian west *9th meridian west The meridian 9° west of Greenwich is a line of longitude that extends from the North Pole across the Arctic Ocean, the Atlantic Ocean, Europe, Africa, the Southern Ocean, and Antarctica to the South Pole. The 9th meridian west forms a great ci ... References {{Authority control w008 meridian west ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
