Topography of the north western Sørkapp Land (Svalbard) in the year 1961

The datasets contain vector layers (topographic and glacier outlines) and Digital Elevation Model (DEM) covering the north western part of Sørkapp Land peninsula, Svalbard, for the year 1961. The first shapefile „glacier_1961_northwestern_Sorkappland.shp” contains the glacier areas manually delineated from vertical aerial photos captured during the historical photogrammetric overflight commissioned by the Norwegian Polar Institute on August 24 and 25, 1961. The shapefile „contour_1961_northwestern_Sorkappland.shp” contains contour lines with intervals of 10 m based on digitized historical maps edited in 1987 by the Institute of Geophysics of the Polish Academy of Sciences and registered using cartographic grid and elevation points. Shapefile „peak_1961_northwestern_Sorkappland.shp” contains elevation points – topographic and triangulation – used in the process of vector data registration. All shapefiles were produced in the UTM projection system (northern hemisphere, zone 33) based on ETRS89 ellipsoid (datum D_ETRS_1989). The raster file „dem_1961_5m_northwestern_Sorkappland.tif” contains Digital Elevation Model (DEM) with 5 m resolution generated from corrected contour lines.

本数据集涵盖斯瓦尔巴群岛索尔克普兰德（Sørkapp Land）半岛西北部区域的矢量图层（含地形图层与冰川轮廓图层）以及数字高程模型（Digital Elevation Model, DEM），数据采集年份为1961年。其中，首个形状文件（shapefile）“glacier_1961_northwestern_Sorkappland.shp”存储了经人工目视解译勾绘的冰川范围，其数据源为挪威极地研究所于1961年8月24日至25日委托开展的历史航空摄影测量飞行所获取的垂直航空照片。形状文件“contour_1961_northwestern_Sorkappland.shp”包含间隔为10米的等高线数据，该数据源自波兰科学院地球物理研究所1987年编绘的数字化历史地图，并通过制图网格与高程点完成了坐标配准。形状文件“peak_1961_northwestern_Sorkappland.shp”存储了用于矢量数据配准作业的地形测量与三角测量高程点。所有上述形状文件均采用基于ETRS89椭球体、基准面为D_ETRS_1989的通用横轴墨卡托（UTM）投影坐标系（北半球33区）生成。栅格文件“dem_1961_5m_northwestern_Sorkappland.tif”包含分辨率为5米的数字高程模型（DEM），该模型由校正后的等高线数据生成。