Terrain model for Icy Bay, Alaska

This digital terrain model of the Icy Bay, Alaska region consists of elevations acquired using airborne Interferometric Synthetic Aperture Radar (IFSAR) merged with bathymetry interpolated from various hydrographic surveys. Hydrographic information for Icy Bay and the lower 9 km of Taan Fiord was primarily from hydrographic surveys and a nautical chart published by the U.S. National Oceanic and Atmospheric Administration (NOAA). Near the head of Taan Fiord, hydrographic survey points were from Meigs and others (2006). The reach of Taan Fiord between the study of Meigs and others (2006) and the NOAA hydrographic data was interpolated using manually drawn contours.本数据集为阿拉斯加州冰湾区域的数字地形模型，其高程数据由机载干涉合成孔径雷达（Interferometric Synthetic Aperture Radar，IFSAR）获取的地形高程数据，与经多组水文测量数据插值得到的水深数据融合而成。冰湾及塔恩峡湾下游9公里区段的水文信息，主要来源于美国国家海洋和大气管理局（NOAA）发布的水文测量数据与航海图。在塔恩峡湾顶端附近，水文测量点位数据取自Meigs等人2006年的研究成果。介于Meigs等人2006年的研究区域与NOAA水文测量数据覆盖区间之间的塔恩峡湾河段，采用手动绘制的等高线进行插值处理。