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Layer: St. Thomas/St. John Ship Traffic (ID: 347)

Parent Layer: Threats and Stressors

Name: St. Thomas/St. John Ship Traffic

Display Field:

Type: Raster Layer

Geometry Type: null

Description: This raster dataset is a gridded representation of the density for 2014 of ship traffic in waters surrounding St. Thomas and St. John. This layer was created by converting Automatic Identification System (AIS) point data obtained from the US Coast Guard for individual ships into tracklines of ship traffic density in order to standardize out variation in movement of the ships. The length of the tracklines was calculated across all the ships in each 100 m grid cell, thus grid cells where ships were constantly passing across it would have more tracklines.

Copyright Text: National Centers for Coastal Ocean Science (NCCOS); United States Coast Guard

Default Visibility: false

MaxRecordCount: 0

Supported Query Formats: JSON, 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:   Query   Query Attachments   Generate Renderer   Return Updates

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