Supersites_NGI acquired colour photography (georeferenced; 0.5m resolution; acquired between 2008-2010) for the Northern Basalts

The supersite aerial photography is subsets of imagery collected as part of the National Photography and Imagery Programme by the national mapping agency, National Geo-Spatial Information (NGI) (previously known as Chief Directorate: Surveys and Mapping). NGI is a component of the Department of Rural Development and Land Reform.

Imagery acquired before 2008 was taken at various heights and resolutions using a range of cameras. The pre-2008 imagery are available as non-georeferenced imagery directly from NGI (the job numbers, row numbers and photo numbers are provided below). The imagery collected after 2008 were captured digitally using an Intergraph DMC camera at 12-bits with a ground spacing distance (i.e. resolution) of 0.5m and were provided in a georeferenced format. The southern supersite imagery were collected in 2010, the northern granite supersites in 2008 and the northern basalt supersite in 2008/2009.

More detail of the National Photography and Imagery Programme can be found at http://www.ngi.gov.za/index.php/Image-tabs-home/national-aerial-photography-and-imagery-programme.html

本超级站点航空摄影影像是国家测绘机构——国家地理空间信息局（National Geo-Spatial Information，简称NGI，前身为勘测与测绘总局长办公室）作为国家摄影与影像计划的一部分所采集影像的子集。国家地理空间信息局隶属于农村发展与土地改革部。

2008年之前采集的影像采用多款相机在不同飞行高度与分辨率下拍摄，此类2008年前的影像可直接从NGI获取非地理参考影像（作业编号、航线编号与照片编号将在下方提供）。2008年后采集的影像采用Intergraph DMC相机以12位色深、0.5米地面采样距离（即分辨率）进行数字化拍摄，并以地理参考格式提供。其中，南部超级站点影像采集于2010年，北部花岗岩超级站点影像采集于2008年，北部玄武岩超级站点影像采集于2008/2009年。

有关国家摄影与影像计划的更多详情，可访问以下链接：http://www.ngi.gov.za/index.php/Image-tabs-home/national-aerial-photography-and-imagery-programme.html