Name: IE_GSI_MI_Seabed_Sediment_Classification_IE_Waters_WGS84

Display Field: FOLK_5

Type: Feature Layer

Geometry Type: esriGeometryPolygon

Description: Research ships working at sea map the seafloor. The ships collect bathymetry data. Bathymetry is the measurement of how deep the sea is. Bathymetry is the study of the shape and features of the seabed. The name comes from Greek words meaning "deep" and “measure". Backscatter is the measurement of how hard the seabed is.Bathymetry and backscatter data are collected on board boats working at sea. The boats use special equipment called a multibeam echosounder. A multibeam echosounder is a type of sonar that is used to map the seabed. Sound waves are emitted in a fan shape beneath the boat. The amount of time it takes for the sound waves to bounce off the bottom of the sea and return to a receiver is used to find out the water depth. The strength of the sound wave is used to find out how hard the bottom of the sea is. A strong sound wave indicates a hard surface (rocks, gravel), and a weak signal indicates a soft surface (silt, mud). The word backscatter comes from the fact that different bottom types “scatter” sound waves differently.Using the equipment also allows predictions as to the type of material present on the seabed e.g. rocks, pebbles, sand, mud. To confirm this, sediment samples are taken from the seabed. This process is called ground-truthing or sampling.The seabed classification map is created by grouping seabed areas that are alike. Areas where there is no multibeam data have either been filled by EUSeaMap (predictive broadscale habitat map) or have been left as unclassified. Sediments have been classified to the European Nature Information System (EUNIS), Marine Strategy Framework Directive (MSFD) Benthic Broad Habitat Types (BBHT), Folk (5 Themes) and European Marine Observation and Data Network (EMODnet) classification systems. It is a vector dataset. Vector data portrays the world using points, lines and polygons (areas). The sediment data is shown as polygons. Each polygon holds information on the classification for EUNIS, MSFD BBHT, Folk, substrate (EMODnet), biozone (EMODnet), data source and resolution.The dataset was mapped as part of the Irish National Seabed Survey (INSS) and INFOMAR (Integrated Mapping for the Sustainable Development of Ireland’s Marine Resource).

Service Item Id: 9906d8aaf3f346c69030d429fb124b26

Copyright Text: Geological Survey Ireland & Marine Institute

Default Visibility: true

MaxRecordCount: 2000

Supported Query Formats: JSON, geoJSON, PBF

Min Scale: 0

Max Scale: 0

Supports Advanced Queries: true

Supports Statistics: true

Has Labels: false

Can Modify Layer: false

Can Scale Symbols: false

Use Standardized Queries: true

Supports Datum Transformation: true

Extent:

XMin: -2783078.1450528703
YMin: 5914912.237942995
XMax: -611468.5646681208
YMax: 7835433.619822466
Spatial Reference: 102100  (3857)

Drawing Info:

Renderer:
Unique Value Renderer:
Field 1: FOLK_5
Field 2: N/A
Field 3: N/A
Field Delimiter: ,
Default Symbol:
N/A
Default Label: N/A
UniqueValueInfos:
• Value: Mud to muddy Sand
  Label: Mud to muddy Sand
  Description: N/A
  Symbol:
  Style: esriSFSSolid
  Color: [115, 223, 255, 255]
  Outline:
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• Value: Sand
  Label: Sand
  Description: N/A
  Symbol:
  Style: esriSFSSolid
  Color: [255, 255, 190, 255]
  Outline:
  N/A
• Value: Coarse sediment
  Label: Coarse-grained sediment
  Description: N/A
  Symbol:
  Style: esriSFSSolid
  Color: [205, 205, 102, 255]
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• Value: Mixed sediment
  Label: Mixed sediment
  Description: N/A
  Symbol:
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  Color: [215, 176, 158, 255]
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• Value: Rock
  Label: Rock & boulders
  Description: N/A
  Symbol:
  Style: esriSFSSolid
  Color: [168, 0, 0, 255]
  Outline:
  N/A
• Value: Unclassified
  Label: No data at this level of Folk
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Transparency: 33
Labeling Info:

Advanced Query Capabilities:

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Supports Pagination: true
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Supports Returning Query Extent: true
Supports Query With Distance: true
Supports Sql Expression: true
Supports Query With ResultType: false
Supports Returning Geometry Centroid: false

HasZ: false

HasM: false

Has Attachments: false

HTML Popup Type: esriServerHTMLPopupTypeAsHTMLText

Type ID Field: null

Fields:

• OBJECTID ( type: esriFieldTypeOID, alias: OBJECTID )
• BIOZONE ( type: esriFieldTypeString, alias: Biozone, length: 254 )
• SUBSTRATE ( type: esriFieldTypeString, alias: Substrate, length: 254 )
• FOLK_5 ( type: esriFieldTypeString, alias: Folk 5 Classes, length: 50 )
• EUNIS ( type: esriFieldTypeString, alias: EUNIS, length: 254 )
• MSFD_BBHT ( type: esriFieldTypeString, alias: MSFD Benthic Broad Habitat Type (BBHT), length: 254 )
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• RESOLUTION ( type: esriFieldTypeString, alias: Resolution, length: 100 )

Supported Operations:   Query   Query Attachments   Generate Renderer   Return Updates

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