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OAS accession Detail for 0221906, meta_version: 2. Current meta_version is: 3
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| accessions_id: | 0221906 | archive |
|---|---|
| Title: | NCCOS Assessment: Modeled Distribution of sand shoals of the Gulf of Mexico and US Atlantic Coast (NCEI Accession 0221906) |
| Abstract: | The sand shoals (modeled) polygons represent the hypothesized distribution of sand shoals of the Gulf of Mexico and US Atlantic Coast based on seafloor characteristics and distance to shoreline variables. Defined by Rutecki et al. (2014), a sand shoal is "a natural, underwater ridge, bank, or bar consisting of, or covered by, sand or other unconsolidated material, resulting in shallower water depths than surrounding areas." In the dataset, attributes characterize shoals with a classification scheme developed with a basis in the Coastal and Marine Ecological Classification Standard (CMECS). |
| Date received: | 20201105 |
| Start date: | 19990101 |
| End date: | 20191231 |
| Seanames: | |
| West boundary: | -97.5 |
| East boundary: | -69.2 |
| North boundary: | 44.8 |
| South boundary: | 24.2 |
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| Submitting institution: | US DOC; NOAA; NOS; National Centers for Coastal Ocean Science |
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| Supplementary information: | Submission Package ID: KWBJ5K Methods: For complete details see Pickens et al. 2020 Shoals were identified with an unsupervised classification using the variables of distance to shoreline, depth, standard deviation of depth, slope, and the bathymetric position index. Depth and geomorphology metrics were derived from modified versions of the Coastal Relief Model as described in Pickens et al. (2020). The extent of analysis includes U.S. federal waters seaward of the U.S. Submerged Lands Act Boundary to a maximum depth of 50 m in the Gulf of Mexico and U.S. Atlantic Ocean. The attribution comes from a classification developed from the framework of the Coastal and Marine Ecological Classification Standard (CMECS, https://www.cmecscatalog.org/cmecs/). Information held in the attribution includes sediment grain size, percent sand, percent carbonate, percent carbonate sand, sediment area ID (from MMIS), area of the feature (square ft), percent fines, minimum depth (depth from the ocean surface), maximum depth (depth from the ocean surface), orientation (compass direction related to the orientation of the feature), minimum slope (degrees), maximum slope (degrees), bathymetric position index, rugosity, Geoform (CMECS), Substrate Component (SC) Class (CMECS), SC Subclass (CMECS), SC Group (CMECS), SC Subgroup (CMECS), percent clay, and percent silt. |
| Availability date: | |
| Metadata version: | 2 |
| Keydate: | 2020-11-09 21:15:35+00 |
| Editdate: | 2020-11-16 17:28:07+00 |