Name: VMS Fishing Effort, All Fisheries 2010-2022

Display Field: Years_List_All

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Description: These data represent estimated commercial fishing activity from vessel monitoring system (VMS) data, for 2010 to 2022, for the United States West Coast. The analysis units are 1-minute grids (~1.8 km or 1 nm). VMS data are provided by NMFS office of Law Enforcement and compiled by PacFIN in 'Comprehensive VMS', a derived data product produced by PacFIN. Pacific States Marine Fisheries Commission (PSMFC) summarized the data using methods developed by CalPoly and BOEM (Wang, et al., in press), based on VMS Declaration Codes and estimated fishing speeds. Summary methods follow those for the 2010-2017 VMS Summary by CalPoly and BOEM, and are based on VMS Declaration Codes and estimated fishing speeds.Fishing effort is summarized using available VMS data and declaration codes reported by vessel operators. Fishing effort is determined using a speed-based approach, where successive vessel positions meeting specified speed criteria are used to construct estimated fishing tracks. Vessel trip and fishing track IDs are generated in the PacFIN database by using the ‘Comprehensive VMS’ database table and applying the maximum fishing speeds associated with each declaration code as established by the CalPoly/BOEM study. Each consecutive record above speed 0 and below the maximum threshold becomes a “fishing track point”, from which the fishing tracks are created. Fishing tracks are summarized using a 1-minute grid system, with statistics calculated for each grid unit. Unique vessels are accounted for among summaries, including those associated with ‘grouped’ declaration codes. Filtering: Data are filtered for confidentiality and to remove grids intersecting ports, those outside the U.S. Exclusive Economic Zone (EEZ), and those with over 50% of the area on land. Remaining data includes 65.2% (79,527/122,013) of grids and represents 98.9% of the track length.Metadata Links: PDF/HTML/XML

Service Item Id: 1be8246796bf479bbbf358ea119cb00c

Copyright Text: NMFS OLE; Center for Marine Sciences - California Polytechnic State University, San Luis Obispo; PSMFC; BOEM

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Fields:

• Avg_FTD_all ( type: esriFieldTypeSingle, alias: avg. fishing density (km/km2) )
• Avg_FT_Length_all ( type: esriFieldTypeSingle, alias: avg. fishing length (km) )
• Ves_all ( type: esriFieldTypeSmallInteger, alias: vessels )
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• Avg_FT_Duration_all ( type: esriFieldTypeSingle, alias: avg. fishing time (hrs) )
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• MAX_Year_All ( type: esriFieldTypeSmallInteger, alias: max. Year )
• Years_List_All ( type: esriFieldTypeString, alias: Years list, length: 255 )
• UNIQUE_DECLARATION_CODE ( type: esriFieldTypeSmallInteger, alias: declaration codes )
• Avg_DC ( type: esriFieldTypeSingle, alias: avg. declaration codes )
• WCFG_GridID ( type: esriFieldTypeInteger, alias: GridID )
• Grid_Size_km2 ( type: esriFieldTypeSingle, alias: grid area (km2) )
• H2O_Size_km2 ( type: esriFieldTypeSingle, alias: grid area (water only, km2) )
• Depth_mean ( type: esriFieldTypeInteger, alias: avg. grid depth (m) )
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