Seafloor substrate (hard and soft bottom) maps at select islands/atolls in American Samoa, Mariana Archipelago, and the Pacific Remote Island Areas

Seafloor substrate (i.e., hard vs. soft bottom) from 0 to up to 50 m depths around islands/atolls in American Samoa, Mariana Archipelago, and Pacific Remote Island Areas produced by the NOAA Ecosystem Sciences Division (ESD). The islands/atolls include Tutuila, Ofu and Olosega, Tau, Rose Atoll in American Samoa; Anatahan, Maug, Aguijan, Pagan, Rota, Tinian, Saipan and Guam in the Mariana Archipelago; Howland, Jarvis, Kingman Reef, Palmyra Atoll and Johnston Atoll in Pacific Remote Islands. This is a preliminary product, derived from integrating two existing map products: hard and soft seafloor substrate maps derived from an unsupervised classification of multibeam backscatter and bathymetry derivatives produced by ESD, and shallow-water benthic habitat maps generated by the NOAA Centers for Coastal Ocean Science. The resulting maps were then updated with ESD's ground truth data, including biological survey data and benthic cover data derived from the analysis of benthic images. Production of final maps included interpolation to fill in gaps, smoothing to remove isolated pixels, and extracting the substrate data up to 50 m. For the Pacific Remote Island Areas, where no previous benthic habitat maps were available, hard and soft substrate maps were newly generated from high spatial resolution satellite images.

Data and Resources

Additional Info

Field Value
Last Updated June 22, 2019, 00:28
Created May 29, 2018, 02:21
access_constraints ["Access Constraints: None | Use Constraints: These data are not to be used for navigation purposes. \n\nPlease cite NOAA Pacific Islands Fisheries Science Center (PIFSC), Ecosystem Sciences Division (ESD) when using the data. \n\nPacific Islands Fisheries Science Center, Ecosystem Sciences Division (2018). Seafloor substrate (hard and soft bottom) maps at select islands/atolls in American Samoa, Mariana Archipelago, and the Pacific Remote Island Areas. | Distribution Liability: While every effort has been made to ensure that these data are accurate and reliable within the limits of the current state of the art, NOAA cannot assume liability for any damages caused by errors or omissions in the data, nor as a result of the failure of the data to function on a particular system. NOAA makes no warranty, expressed or implied, nor does the fact of distribution constitute such a warranty."]
bbox-east-long -168.115
bbox-north-lat -14.1
bbox-south-lat -14.57
bbox-west-long -170.92
coupled-resource []
dataset-reference-date [{"type": "publication", "value": "2018"}]
frequency-of-update notPlanned
graphic-preview-description An example hard- and soft-bottom substrate map of Tutuila (prepared using a different methodology compared with the substrate maps prepared for the project described here).
graphic-preview-type JPG
guid gov.noaa.nmfs.inport:34310
licence ["NOAA provides no warranty, nor accepts any liability occurring from any incomplete, incorrect, or misleading data, or from any incorrect, incomplete, or misleading use of the data. It is the responsibility of the user to determine whether or not the data is suitable for the intended purpose."]
metadata-date 2019-06-04T13:14:25
metadata-language eng
progress completed
resource-type dataset
responsible-party [{"name": "", "roles": ["pointOfContact", "custodian"]}]
spatial {"type": "Polygon", "coordinates": [[[-170.92, -14.57], [-168.115, -14.57], [-168.115, -14.1], [-170.92, -14.1], [-170.92, -14.57]]]}
spatial_harvester true
temporal-extent-begin 2003
temporal-extent-end 2010