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Layer: Herring 2011-2014 (<4 knots) (ID: 0)

Name: Herring 2011-2014 (<4 knots)

Display Field:

Type: Raster Layer

Geometry Type: null

Description: This dataset broadly characterizes the density of commercial fishing activity for the Herring fishery in the northeastern U.S. based on fishing vessels with Vessel Monitoring Systems (VMS) from 2011 to 2014. The National Marine Fisheries Service (NMFS) describes VMS as a satellite surveillance system primarily used to monitor the location and movement of commercial fishing vessels in the U.S. This dataset was created using VMS position records for vessels travelling at a speed of less than four knots, which was the speed threshold used to identify vessels engaged in fishing rather than transit activity. This includes vessels in ports despite little to no fishing activity at those locations. Raw VMS data from NMFS were processed into geospatial point products and analyzed to create density grids for select fisheries. The point data were filtered to remove vessel positions which did not meet the "Rule of Three" criteria required by NMFS due to data confidentiality. More information on the Rule of Three is available within the metadata. Data values are standardized and are best interpreted qualitatively. An absence of data does not indicate an absence of fishing activity.

Definition Expression: N/A

Copyright Text: National Marine Fisheries Service (NMFS) Vessel Monitoring Systems (VMS), RPS Applied Science Associates (RPS ASA)

Default Visibility: true

MaxRecordCount: 0

Supported Query Formats: JSON, AMF, geoJSON

Min Scale: 0

Max Scale: 0

Supports Advanced Queries: false

Supports Statistics: false

Has Labels: false

Can Modify Layer: false

Can Scale Symbols: false

Use Standardized Queries: true

Drawing Info: Advanced Query Capabilities:
HasZ: false

HasM: false

Has Attachments: false

HTML Popup Type: esriServerHTMLPopupTypeNone

Type ID Field: null

Fields: None

Supported Operations:   Generate Renderer   Return Updates