Guam Island: Backscatter

[ Bathymetry | Backscatter | Optical Validation | Geomorphology ]

Guam Island Composite Backscatter Imagery

Guam backscatter composite image.

Download above image as a high-res JPG or high-res PDF

Guam Island Color Composite Backscatter Imagery

Guam backscatter color composite image.

Download above image as a high-res JPG or high-res PDF

Zipped data files contain 1) grid data file (GeoTIFF, or ASCII), 2) high-res JPG of image, and 3) explanatory metadata text file (identical to linked file listed below). Study area grids are named for the island location, the type of sensor used for data acquisition, the chart box number, and the grid resolution in meters.

AHI Reson 8101 240 kHz Backscatter Imagery

Guam AHI Reson 8101backscatter image.

Download above image with boxes as a high-res JPG or high-res PDF
Download above image without boxes as a high-res JPG or high-res PDFThe boxes on the map represent charts used to grid subsets of the backscatter data into manageable file sizes. The box labels correspond to the 1 meter GeoTIFFs that are available for download in the pull down menus. To create a map of the entire backscatter dataset, all charts must be downloaded and the data must be mosaicked.

Reson 1 m grid: Grid metadata text

Hi‘ialakai Simrad EM300 30 kHz Backscatter Imagery

Guam EM300 backscatter image.

Download above image with boxes as a high-res JPG or high-res PDF
Download above image without boxes as a high-res JPG or high-res PDFThe boxes on the map represent charts used to grid subsets of the backscatter data into manageable file sizes. The box labels correspond to the 5 meter GeoTIFFs that are available for download in the pull down menus. To create a map of the entire backscatter dataset, all charts must be downloaded and the data must be mosaicked.
EM300 5 m grid: Grid metadata text
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Benthic Habitat Data

Bathymetry

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).
* Ikonos imagery & USGS Digital Ortho Quarter Quads NOT included with download.

60m grid data
Coverage Map
Multibeam & Lidar Integrated Bathymetry
5m grid data
  • View: Metadata
    2003 | Map
  • Download: Shapefiles, JPG & metadata
    2003