AFSC/RACE/GAP/Zimmermann: Aleutians Sediments
type: Dataset
description: We assembled 2.1 million National Ocean Service (NOS) bathymetric soundings extending 1,900 km along the Aleutian Islands from Unimak Island in the east to the Russian border in the west, and ranging approximately 500 km north of the central Aleutians to Petrel and Bowers Banks, and also the surrounding deep waters of the southeastern Bering Sea. These bathymetry data are available from the National Geophysical Data Center (NGDC: http://www.ngdc.noaa.gov), which archives and distributes data that were originally collected by the NOS and others. While various bathymetry data have been downloaded previously from NGDC, compiled, and used for a variety of projects, our effort differed in that we compared and corrected the digital bathymetry by studying the original analog source documents - digital versions of the original survey maps, called smooth sheets. Our editing included deleting erroneous and superseded values, digitizing missing values, and properly aligning all data sets to a common, modern datum. We also digitized 25,000 verbal surficial sediment descriptions from the smooth sheets, providing the largest single source of sediment information for the Aleutians.
issued: 2025-11-20T06:45:15.456013
language: {en-US}
modified: 2013-05
spatial: Location
contact point: Organization
  fn: Roberson, Nancy
keyword: alaska
keyword: aleutian-islands
keyword: amerigeo
keyword: amerigeoss
keyword: ckan
keyword: doc-noaa-nmfs-afsc-alaska-fisheries-science-center
keyword: geo
keyword: geoss
keyword: groundfish-assessment-program
keyword: national
keyword: national-marine-fisheries-service
keyword: noaa
keyword: north-america
keyword: north-pacific-ocean
keyword: point
keyword: sediment
keyword: u-s-department-of-commerce
keyword: united-states

https://data.amerigeoss.org/dataset/1aec2ffc-a055-43d1-b7ac-d1e0ab45633a/resource/4ed6a5ee-bd89-45c8-af64-ae2dddcb9170
type: Distribution
description: AI_sediments.zip
issued: 2021-03-11T05:25:07.952121
modified: 2025-11-20T06:45:15.444705
title: http://www.afsc.noaa.gov/RACE/groundfish/bathymetry/AI_sediments.zip
access URL: http://www.afsc.noaa.gov/RACE/groundfish/bathymetry/AI_sediments.zip
media type: application/unknown

GCMD Keywords Page
type: Distribution
description: keyword_list.html
format: HTML
issued: 2021-03-11T05:25:07.952132
modified: 2025-11-20T06:45:15.445559
access URL: http://gcmd.nasa.gov/learn/keyword_list.html
media type: text/html

Citation URL
type: Distribution
description: AI_sediments.zip
issued: 2021-03-11T05:25:07.952129
modified: 2025-11-20T06:45:15.445145
access URL: http://www.afsc.noaa.gov/RACE/groundfish/bathymetry/AI_sediments.zip
media type: application/unknown

US Migrating
type: Agent