Project to revise and document Bering Sea spatial products

Date: 03-17-2022
Author: Jason Conner
Collaborators: Duane Stevenson, Lewis Barnett, Sean Rohan

• Project description: Google Docs - EBS Spatial Data
• Spatial Product Summary: Google Sheets - Bering Sea Shapefiles Summary

NOTES:

These files alter the shapefiles created by Angie Grieg that are currently hosted on the OFIS ArcGIS server.

Primary projection (EBS, NBS, Chukchi) - EPSG:3338 (shapefiles were previously a custom AEA)
Bering Sea Slope shapefile projection - EPSG:4269
VAST extrapolation grids include centroids and area calculated in EPSG:3338 (columns lon_centroid, lat_centroid, Area_KM2) and centroids in EPSG:4326 (columns lat, lon in decimal degrees).

• Projection transformed into a standard EPSG format
• 200m contour was made contiguous to the BS slope shapefiles
• EBS and NBS made contiguous
• Boundary artifact polygon removed
• Shapefiles exclude landmass using the ARDEM dataset (downloaded on 12/29/2017) at 0.0 elevation settings for ARDEM transformation/conversion not recorded, if depth limits are changed to 20m in the future, research into optimal settings is advised
• NBS extent excludes station AA-10 which was dropped from sampling beginning in 2017
• Southern border of the Chukchi Sea survey extent altered for contiguity