Cartography BTA 1:5,000 (reference year 2014). Relief enclosure

Layer of the BTA (reference year 2014) containing slopes and steeps for the entire territory of Navarre on a 1:5,000 scale. The BTA is an adaptation to the production of the National Cartographic Base (BCN) of the National Geographical Institute (IGN). BTA is the acronym for “Harmonised Topographical Base”. It is a data model agreed by the Autonomous Communities (CCAA) and approved by the Higher Geographical Council (CSG) of which there is a version v1 dated 2008.本数据集为统一地形基准（Harmonised Topographical Base，缩写BTA）的2014基准年图层，比例尺为1:5000，涵盖纳瓦拉全境的坡度与陡坡地形数据。统一地形基准（BTA）是适配国家地理研究所（National Geographical Institute，缩写IGN）国家制图基准（National Cartographic Base，缩写BCN）生产体系的改造版本。BTA为‘Harmonised Topographical Base’的缩写，该数据模型由各自治区（Autonomous Communities，缩写CCAA）共同商定，并经高级地理委员会（Higher Geographical Council，缩写CSG）批准，现有2008年发布的v1版本。