Digital image mosaics of the nearshore coastal waters of selected areas on the island of Hawai'i generated using aerial photographs and SHOALS airborne lidar bathymetry data

This portion of the data release contains image mosaics generated using digitized 1:24K natural color photographs collected in June 2000 by the National Oceanic and Atmospheric Administration (NOAA) National Ocean Service (NOS). These four image mosaics have 1.0 meter-per-pixel resolution, and intermittently cover approximately 53 km (33 mi) of shallow, coastal waters along the west, Kona coast, of the island of Hawai'i, including (from north to south) the Kawaihae, Waikoloa, Kukio, and Kailua-Kona areas. Each digital image mosaic area is downloadable as a separate zip file (area_1m.zip) that contains two versions of the image mosaic--one with and one without a lidar bathymetry shaded-relief image digitally combined with the aerial photography mosaic results. The shaded-relief image was derived using airborne SHOALS (Scanning Hydrographic Operational Lidar Survey) lidar (LIght Detection And Ranging) data collected for the U.S. Geological Survey (USGS) by the U.S. Army Corp of Engineers (USACE) in April 1999. Also included in each zip file is a lower-resolution 'browse' graphic of each image mosaic and associated metadata.本次发布的数据子集包含由美国国家海洋和大气管理局（National Oceanic and Atmospheric Administration, NOAA）国家海洋服务局（National Ocean Service, NOS）于2000年6月采集的数字化1:24K天然彩色航空照片生成的图像镶嵌图。该四幅图像镶嵌图的空间分辨率为1.0米/像素，断续覆盖夏威夷岛科纳西海岸沿线约53千米（33英里）的浅海近岸水域，涵盖（从北至南）卡威哈埃、威科洛亚、库基奥以及凯卢阿-科纳区域。每幅数字图像镶嵌图均可作为独立的zip压缩包（area_1m.zip）下载，压缩包内包含两种版本的图像镶嵌图：一种为将激光测深阴影浮雕图像与航空摄影镶嵌结果数字化合成的版本，另一种则未进行该合成操作。上述阴影浮雕图像源自1999年4月由美国陆军工程兵团（U.S. Army Corp of Engineers, USACE）为美国地质调查局（U.S. Geological Survey, USGS）采集的机载SHOALS扫描水文作业激光雷达测量系统（Scanning Hydrographic Operational Lidar Survey）激光雷达（激光探测与测距，LIght Detection And Ranging）数据。每个压缩包中还包含一幅低分辨率的图像镶嵌图‘浏览’图形文件以及相关元数据。