GSI Physiographic Units Level 1

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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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License Creative Commons Attribution 4.0
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