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Alaska Bathymetry and Sediments: Aleutian Islands

map
Bathymetric surface of Aleutian Islands compiled from National Ocean Service hydrographic surveys and supplemented with some non-hydrographic surveys. 

Bathymetry of the Aleutian Islands

AFSC scientists with the RACE Groundfish Program corrected, digitized, and assembled 2.1 million National Ocean Service (NOS) bathymetric soundings from 290 hydrographic surveys represented by smooth sheets, extending 1,900 km along the Aleutian Islands from Unimak Island in the east to the Russian border in the west. The original, uncorrected smooth sheet bathymetry data sets are available from the National Geophysical Data Center (NGDC), which archives and distributes data that were originally collected by the NOS and others. Details of our processing methods can be found in Smooth Sheet Bathymetry of the Aleutian Islands, NOAA Tech Memo NMFS-AFSC-250.

  map of sediments
  Map of National Ocean Service verbal sediment descriptions. Click image to enlarge.


Sediments of the Aleutian Islands

We also digitized 25,000 verbal surficial sediment descriptions from 234 of the smooth sheets, providing the largest single source of sediment information for the Aleutian Islands.


Data Available for Download (NOTE: Data are not to be used for navigation).

 

Users of the data should cite it as Zimmermann, M., M. M. Prescott, and C. N. Rooper. 2013. Smooth Sheet Bathymetry of the Aleutian Islands. U.S. Dep. Commer., NOAA Tech. Memo. NMFS-AFSC-250, 43p.

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