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GSI Physiographic Units Level 1

Arna fhoilsiú ag: Geological Survey Ireland
17 Cosúil
Téama: Science
Tuairimí: 318
Rátáil oscailteachta:

Physiographic maps are cartographic representations of the broad-scale physical landscape units of a region, and physiographic units consist of physical regions showing internal uniformity with respect to one or more environmental attributes, which are clearly differentiated from neighbouring regions. This dataset presents a physiographic units map for the Republic of Ireland. The units were mapped at 1:100,000 scale in order to be represented as a cartographic digital map at 1:250,000 scale. A hierarchical classification system was derived in order to provide representations of the landscape physiography at different levels of complexity. The Level 1 classification scheme dataset divides the landscape in six broad landform regions differentiating bedrock dominated landscapes at different altitude as mountains (> 300 m) hills (100 to 300 m) and plains (< 100 m) and sediment landscapes with differing degrees of change in slope as rolling, hummocky and flat.

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Téama Eolaíocht
Dáta eisithe 2018-04-11
Dáta nuashonraithe 2019-05-14
Cloíonn an tacar sonraí leis na caighdeáin seo The INSPIRE Directive or INSPIRE lays down a general framework for a Spatial Data Infrastructure (SDI) for the purposes of European Community environmental policies and policies or activities which may have an impact on the environment.
Nótaí Cearta {"Creative Commons Attribution 4.0 International (CC BY 4.0) licence conditions apply","\"Creative Commons Attribution 4.0 International (CC BY 4.0) licence conditions apply. Users are free to: SHARE (copy and redistribute the material in any medium or format) and ADAPT (remix, transform, and build upon the material for any purpose, even commercially). Under the following terms: ATTRIBUTION (Users must give appropriate credit, provide a link to the license, and indicate if changes were made. Users may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.) Please use this specific attribution statement: \"\"Contains Irish Public Sector Data (Geological Survey Ireland) licensed under a Creative Commons Attribution 4.0 International (CC BY 4.0) licence\"\" NO ADDITIONAL RESTRICTIONS (Users may not apply legal terms or technological measures that legally restrict others from doing anything the license permits.) \" Rights (can) Share- copy and redistribute the data in any medium or format Adapt- remix, transform, and build upon the material for any purpose, even commercially Requirements (must) Attribution- Give appropriate credit, provide a link to the licence, and indicate if changes were made. Do so in any reasonable manner, but not in any way that suggests the license endorses you or your use No additional restrictions - may not apply legal terms or technological measures that legally restrict others from doing anything the license permits Under the CC-BY Licence, users must acknowledge the source of the Information in their product or application. Please use this specific attribution statement: \"Contains Irish Public Sector Data (Geological Survey) licensed under a Creative Commons Attribution 4.0 International (CC BY 4.0) licence\".",license,"\"Creative Commons Attribution 4.0 International (CC BY 4.0) licence conditions apply. Users are free to: SHARE (copy and redistribute the material in any medium or format) and ADAPT (remix, transform, and build upon the material for any purpose, even commercially). Under the following terms: ATTRIBUTION (Users must give appropriate credit, provide a link to the license, and indicate if changes were made. Users may do so in any reasonable manner, but not in any way that suggests the licensor endorses you or your use.) Please use this specific attribution statement: \"\"Contains Irish Public Sector Data (Geological Survey Ireland) licensed under a Creative Commons Attribution 4.0 International (CC BY 4.0) licence\"\" NO ADDITIONAL RESTRICTIONS (Users may not apply legal terms or technological measures that legally restrict others from doing anything the license permits.) \" Rights (can) Share- copy and redistribute the data in any medium or format Adapt- remix, transform, and build upon the material for any purpose, even commercially Requirements (must) Attribution- Give appropriate credit, provide a link to the licence, and indicate if changes were made. Do so in any reasonable manner, but not in any way that suggests the license endorses you or your use No additional restrictions - may not apply legal terms or technological measures that legally restrict others from doing anything the license permits Under the CC-BY Licence, users must acknowledge the source of the Information in their product or application. Please use this specific attribution statement: \"Contains Irish Public Sector Data (Geological Survey) licensed under a Creative Commons Attribution 4.0 International (CC BY 4.0) licence\".",license}
Minicíocht Nuashonraithe Riamh
Teanga English
Lamairne https://dcenr.maps.arcgis.com/apps/webappviewer/index.html?id=afa76a420fc54877843aca1bc075c62b
Clúdach Geografach i bhformáid GeoJSON {"type":"Polygon","coordinates":[[[-11.0, 50.0],[-11.0, 56.0], [-5.0, 56.0], [-5.0, 50.0], [-11.0, 50.0]]]}
SRS Irish Transverse Mercator (ITM, EPSG:2157)
Méid Ingearach {"maxVerticalExtent": "1041", "verticalDomainName": null, "minVerticalExtent": "0"}
Eolas Dualfhoinse Originator - Quaternary and Geotechnical Section, Land Mapping Unit, Geological Survey Ireland. The physiographic units dataset was constructed from visual analysis and interpretation of four main digital data sources: (1) Geological Survey bedrock geology maps at 1:100,000 and 1:500,000 scale; (2) Geological Survey Quaternary sediments and geomorphology maps at 1: 50,000 scale; (3) Hydrographically corrected DEM with 20 m pixel size (EPA) and 5 m pixel size DEM (Ordnance Survey Ireland, OSI); (4) High resolution digitalglobe orthophotography dataset and national digital premium basemap map service cached from 1:4,000,000 to 1:1,000 scale (OSI). The visual analysis within a GIS environment of the datasets coupled with expert judgement was used to delineate the outline of the discrete physiographic units through an iterative process where early iterations of mapping results were assessed and discussed by the working group to reach final the version of the dataset. The mapping methodology was tested and refined in three main steps: (1) Delineation of physiographic units for three pilot areas at scales ranging from 1:30,000 to 1:100,000 with the objective of generating a final dataset to be used at 1:250,000 scale. (2) Construction of a nationwide map which extended the first step above, focussing on the delineation of physiographic units across the entire country based on DEM topography, Quaternary geomorphology, Quaternary sediments and bedrock datasets as listed above, followed by further development and definition of the classification scheme. (3) Merging and reclassification of some physiographic units into three levels of complexity, as well as the detailed, local-scale editing of their outlines based on changes on slope and altitude thresholds, as identified from slope and altitude maps constructed from DEMs.
Tréimhse ama clúdaithe (tús) 2016-12-23
Tréimhse ama clúdaithe (deireadh) 2018-02-01

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