Layers:

Layer: CPAA_Combined (1)


Name: CPAA_Combined

Display Field: Name

Type: Feature Layer

Geometry Type: esriGeometryPolygon

Description: Using a vessel traffic model developed by COWI in 2022,* vessel AIS pings from 2017 were analyzed to determine idle ping counts (Speed Over Ground between 0 and 1 knots & pings further off shore than 1000ft to avoid mooring vessels) by area to identify CPAA outside of the DAA. The ping counts were based on idling AIS pings, number of unique Idling Episode Tracks (30 minutes or more), Average Duration of Idling Episodes, Median Duration of Idling Episodes, Total duration of Idling Episode Tracks and an (ping count) occupancy metric calculated using the total duration of the idling episode track within an anchorage area polygon for the 2017 year divided by the surface area of of the anchorage area polygon. This metric is measured in hours per square mile (hr/sq mi). For full details on the analysis, see the Anchorage Area Assessment Companion Memo and contact COWI for further data.

Copyright Text: Using a vessel traffic model developed by COWI in 2022,* vessel AIS pings from 2017 were analyzed to determine idle ping counts (Speed Over Ground between 0 and 1 knots & pings further off shore than 1000ft to avoid mooring vessels) by area to identify CPAA outside of the DAA. The ping counts were based on idling AIS pings, number of unique Idling Episode Tracks (30 minutes or more), Average Duration of Idling Episodes, Median Duration of Idling Episodes, Total duration of Idling Episode Tracks and an (ping count) occupancy metric calculated using the total duration of the idling episode track within an anchorage area polygon for the 2017 year divided by the surface area of of the anchorage area polygon. This metric is measured in hours per square mile (hr/sq mi). For full details on the analysis, see the Anchorage Area Assessment Companion Memo and contact COWI for further data.

Min. Scale: 0

Max. Scale: 0

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Max Record Count: 2000

Supported query Formats: JSON, geoJSON, PBF

Use Standardized Queries: True

Extent:

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YMin: 40.8000532843317
XMax: -72.2701624120656
YMax: 41.2776867771231
Spatial Reference: 4326 (4326)


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Object ID Field: FID

Unique ID Field:

Name : FID

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Global ID Field:

Type ID Field:

Fields:
• FID (type: esriFieldTypeOID, alias: FID, SQL Type: sqlTypeOther, length: 0, nullable: false, editable: false)
• AREA (type: esriFieldTypeDouble, alias: AREA, SQL Type: sqlTypeOther, nullable: true, editable: true)
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• Shape__Length (type: esriFieldTypeDouble, alias: Shape__Length, SQL Type: sqlTypeDouble, nullable: true, editable: false)

Templates:

Name: CPAA_Combined
Description:
Drawing Tool: esriFeatureEditToolPolygon
Prototype:

Attributes:


Is Data Versioned: false

Has Contingent Values: false

Supports Rollback On Failure Parameter: true

Last Edit Date: 10/15/2024 12:08:55 PM

Schema Last Edit Date: 7/29/2024 12:12:18 PM

Data Last Edit Date: 7/29/2024 12:12:18 PM