Zipped data files contain 1) grid data file (GMT or ASCII), 2) high-res JPG of image, and 3) explanatory metadata text file (identical to linked file listed below).
Zipped data files contain 1) Arc ASCII file, 2) layer (.lyr) file for symbology, 3) high-res JPG of image, and 4) explanatory metadata text file (identical to linked file listed below).
The collection and analysis of photographic data to ground truth and interpret multibeam data layers with the goal of characterizing seafloor habitats.
Descriptions of optical data products.
Download: Accessory Files
The map above shows optical validation survey sites at Ofu and Olosega Islands in 2002, 2004 and 2006. Each point represents an analyzed video frame or photo.
The optical data are classified by substrate type, type of live growth on bottom, geomorphic zone, and the size and abundance of holes in the substrate. Maps showing the results of video/photo classification will be posted as soon as they are completed. Shapefiles and attribute tables of the classified tracks will also be available for download. The shapefiles will enable users to map the occurrence of any combination of characteristics that are included in the classification scheme.