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Name: IE_GSI_MI_Seabed_Sediment_Samples_IE_Waters_WGS84_LAT
Display Field: FOLK_CLASS
Type: Feature Layer
Geometry Type: esriGeometryPoint
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.Grab sampling is the most popular method of ground-truthing. There are three main types of grab used depending on the size of the vessel and the weather conditions; Day Grab, Shipek or Van Veen Grabs. The grabs take a sample of sediment from the surface layer of the seabed. The samples are then sent to a lab for analysis. Particle size analysis (PSA) has been carried out on samples collected since 2004. The results are used to cross-reference the seabed sediment classifications that are made from the bathymetry and backscatter datasets and are used to create seabed sediment maps (mud, sand, gravel, rock). Sediments have been classified based on percentage sand, mud and gravel (after Folk 1954).This dataset show locations that have completed samples from the seabed around Ireland. The bottom of the sea is known as the seabed or seafloor. These samples are known as grab samples. This is a dataset collected from 2001 to 2019.It is a vector dataset. Vector data portrays the world using points, lines and polygons (areas). The sample data is shown as points. Each point holds information on the surveyID, year, vessel name, sample id, instrument used, date, time, latitude, longitude, depth, report, recovery, percentage of mud, sand and gravel, description and folk classification.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). Samples from related projects are also included: ADFish, DCU, FEAS, GATEWAYS, IMAGIN, IMES, INIS_HYRDO, JIBS, MESH, SCALLOP, SEAI and UCC.
Service Item Id: 09b7d1c6a2ca465ea8112430dfbed5a2
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
Can Scale Symbols: false
Use Standardized Queries: true
Supports ValidateSQL: true
Supports Calculate: true
Supports Datum Transformation: true
Extent:
XMin: -24.5
YMin: 47.7500000000001
XMax: -3.59100000000001
YMax: 57.3331
Spatial Reference: 4326
(4326)
Drawing Info:
Renderer:
Unique Value Renderer:
Field 1: FOLK_CLASS
Field 2: N/A
Field 3: N/A
Field Delimiter: ,
Default Symbol:
Default Label: N/A
UniqueValueInfos:
-
Value: Mud
Label: Mud
Description: N/A
Symbol:
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Color: [190, 210, 255, 255]
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Value: gravelly Mud
Label: (gravelly) Mud
Description: N/A
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Value: sandy Mud
Label: sandy Mud
Description: N/A
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Value: gravelly sandy Mud
Label: (gravelly) sandy Mud
Description: N/A
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Value: muddy Sand
Label: muddy Sand
Description: N/A
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Value: gravelly muddy Sand
Label: (gravelly) muddy Sand
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Value: Sand
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Value: gravelly Sand
Label: (gravelly) Sand
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Value: sandy Gravel
Label: sandy Gravel
Description: N/A
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Value: Gravel
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Value: muddy Gravel
Label: muddy Gravel
Description: N/A
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Value: muddy sandy Gravel
Label: muddy sandy Gravel
Description: N/A
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Value: Unclassified
Label: No data at this level of Folk
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Labeling Info:
Advanced Query Capabilities:
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HasZ: true
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HTML Popup Type: esriServerHTMLPopupTypeAsHTMLText
Type ID Field: FOLK_CLASS
Fields:
-
OBJECTID
(
type: esriFieldTypeOID, alias: OBJECTID, editable: false, nullable: false, defaultValue: null, modelName: OBJECTID
)
-
SURVEY_ID
(
type: esriFieldTypeString, alias: Survey ID, editable: true, nullable: true, length: 48, defaultValue: null, modelName: SURVEY_ID
)
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SURVEYYEAR
(
type: esriFieldTypeDouble, alias: Survey Year, editable: true, nullable: true, defaultValue: null, modelName: SURVEYYEAR
)
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VESSELNAME
(
type: esriFieldTypeString, alias: Vessel Name, editable: true, nullable: true, length: 60, defaultValue: null, modelName: VESSELNAME
)
-
SAMPLE_ID
(
type: esriFieldTypeString, alias: Sample ID, editable: true, nullable: true, length: 48, defaultValue: null, modelName: SAMPLE_ID
)
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EQUIPMENT
(
type: esriFieldTypeString, alias: Sample Equipment Used, editable: true, nullable: true, length: 32, defaultValue: null, modelName: EQUIPMENT
)
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SAMPLEDATE
(
type: esriFieldTypeString, alias: Sample Date, editable: true, nullable: true, length: 12, defaultValue: null, modelName: SAMPLEDATE
)
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SAMPLETIME
(
type: esriFieldTypeString, alias: Sample Time, editable: true, nullable: true, length: 254, defaultValue: null, modelName: SAMPLETIME
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LONGITUDE
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type: esriFieldTypeDouble, alias: Longitude, editable: true, nullable: true, defaultValue: null, modelName: LONGITUDE
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LATITUDE
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type: esriFieldTypeDouble, alias: Latitude, editable: true, nullable: true, defaultValue: null, modelName: LATITUDE
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DEPTH_M
(
type: esriFieldTypeString, alias: Depth (m), editable: true, nullable: true, length: 254, defaultValue: null, modelName: DEPTH_M
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RECOVERY
(
type: esriFieldTypeString, alias: Sample Recovery, editable: true, nullable: true, length: 52, defaultValue: null, modelName: RECOVERY
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DESCRIPT
(
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COMMENT_
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REPORT
(
type: esriFieldTypeString, alias: Report, editable: true, nullable: true, length: 254, defaultValue: null, modelName: REPORT
)
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MUD_PCT
(
type: esriFieldTypeDouble, alias: Mud(%), editable: true, nullable: true, defaultValue: null, modelName: MUD_PCT
)
-
SAND_PCT
(
type: esriFieldTypeDouble, alias: Sand(%), editable: true, nullable: true, defaultValue: null, modelName: SAND_PCT
)
-
GRAVEL_PCT
(
type: esriFieldTypeDouble, alias: Gravel(%), editable: true, nullable: true, defaultValue: null, modelName: GRAVEL_PCT
)
-
PSA_DESC
(
type: esriFieldTypeString, alias: PSA Description, editable: true, nullable: true, length: 254, defaultValue: null, modelName: PSA_DESC
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FOLK_CLASS
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DATASOURCE
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IMAGE_ID
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Types:
ID: Mud
Name: Mud
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Name: Mud
Description:
Prototype:
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LONGITUDE: null
LATITUDE: null
DEPTH_M: null
RECOVERY: null
DESCRIPT: null
COMMENT_: null
REPORT: null
MUD_PCT: null
SAND_PCT: null
GRAVEL_PCT: null
PSA_DESC: null
FOLK_CLASS: Mud
Drawing Tool: esriFeatureEditToolPoint
ID: gravelly Mud
Name: (gravelly) Mud
Domains:
Templates:
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Name: gravelly Mud
Description:
Prototype:
DATASOURCE: null
IMAGE_ID: null
SURVEY_ID: null
SURVEYYEAR: null
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SAMPLE_ID: null
EQUIPMENT: null
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LONGITUDE: null
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MUD_PCT: null
SAND_PCT: null
GRAVEL_PCT: null
PSA_DESC: null
FOLK_CLASS: gravelly Mud
Drawing Tool: esriFeatureEditToolPoint
ID: sandy Mud
Name: sandy Mud
Domains:
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Name: sandy Mud
Description:
Prototype:
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IMAGE_ID: null
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SURVEYYEAR: null
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LONGITUDE: null
LATITUDE: null
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DESCRIPT: null
COMMENT_: null
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MUD_PCT: null
SAND_PCT: null
GRAVEL_PCT: null
PSA_DESC: null
FOLK_CLASS: sandy Mud
Drawing Tool: esriFeatureEditToolPoint
ID: gravelly sandy Mud
Name: (gravelly) sandy Mud
Domains:
Templates:
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Name: gravelly sandy Mud
Description:
Prototype:
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PSA_DESC: null
FOLK_CLASS: gravelly sandy Mud
Drawing Tool: esriFeatureEditToolPoint
ID: muddy Sand
Name: muddy Sand
Domains:
Templates:
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Name: muddy Sand
Description:
Prototype:
DATASOURCE: null
IMAGE_ID: null
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SURVEYYEAR: null
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EQUIPMENT: null
SAMPLEDATE: null
SAMPLETIME: null
LONGITUDE: null
LATITUDE: null
DEPTH_M: null
RECOVERY: null
DESCRIPT: null
COMMENT_: null
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MUD_PCT: null
SAND_PCT: null
GRAVEL_PCT: null
PSA_DESC: null
FOLK_CLASS: muddy Sand
Drawing Tool: esriFeatureEditToolPoint
ID: gravelly muddy Sand
Name: (gravelly) muddy Sand
Domains:
Templates:
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Name: gravelly muddy Sand
Description:
Prototype:
DATASOURCE: null
IMAGE_ID: null
SURVEY_ID: null
SURVEYYEAR: null
VESSELNAME: null
SAMPLE_ID: null
EQUIPMENT: null
SAMPLEDATE: null
SAMPLETIME: null
LONGITUDE: null
LATITUDE: null
DEPTH_M: null
RECOVERY: null
DESCRIPT: null
COMMENT_: null
REPORT: null
MUD_PCT: null
SAND_PCT: null
GRAVEL_PCT: null
PSA_DESC: null
FOLK_CLASS: gravelly muddy Sand
Drawing Tool: esriFeatureEditToolPoint
ID: Sand
Name: Sand
Domains:
Templates:
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Name: Sand
Description:
Prototype:
DATASOURCE: null
IMAGE_ID: null
SURVEY_ID: null
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MUD_PCT: null
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GRAVEL_PCT: null
PSA_DESC: null
FOLK_CLASS: Sand
Drawing Tool: esriFeatureEditToolPoint
ID: gravelly Sand
Name: (gravelly) Sand
Domains:
Templates:
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Name: gravelly Sand
Description:
Prototype:
DATASOURCE: null
IMAGE_ID: null
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LONGITUDE: null
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SAND_PCT: null
GRAVEL_PCT: null
PSA_DESC: null
FOLK_CLASS: gravelly Sand
Drawing Tool: esriFeatureEditToolPoint
ID: sandy Gravel
Name: sandy Gravel
Domains:
Templates:
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Name: sandy Gravel
Description:
Prototype:
DATASOURCE: null
IMAGE_ID: null
SURVEY_ID: null
SURVEYYEAR: null
VESSELNAME: null
SAMPLE_ID: null
EQUIPMENT: null
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LONGITUDE: null
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MUD_PCT: null
SAND_PCT: null
GRAVEL_PCT: null
PSA_DESC: null
FOLK_CLASS: sandy Gravel
Drawing Tool: esriFeatureEditToolPoint
ID: Gravel
Name: Gravel
Domains:
Templates:
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Name: Gravel
Description:
Prototype:
DATASOURCE: null
IMAGE_ID: null
SURVEY_ID: null
SURVEYYEAR: null
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GRAVEL_PCT: null
PSA_DESC: null
FOLK_CLASS: Gravel
Drawing Tool: esriFeatureEditToolPoint
ID: muddy Gravel
Name: muddy Gravel
Domains:
Templates:
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Name: muddy Gravel
Description:
Prototype:
DATASOURCE: null
IMAGE_ID: null
SURVEY_ID: null
SURVEYYEAR: null
VESSELNAME: null
SAMPLE_ID: null
EQUIPMENT: null
SAMPLEDATE: null
SAMPLETIME: null
LONGITUDE: null
LATITUDE: null
DEPTH_M: null
RECOVERY: null
DESCRIPT: null
COMMENT_: null
REPORT: null
MUD_PCT: null
SAND_PCT: null
GRAVEL_PCT: null
PSA_DESC: null
FOLK_CLASS: muddy Gravel
Drawing Tool: esriFeatureEditToolPoint
ID: muddy sandy Gravel
Name: muddy sandy Gravel
Domains:
Templates:
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Name: muddy sandy Gravel
Description:
Prototype:
DATASOURCE: null
IMAGE_ID: null
SURVEY_ID: null
SURVEYYEAR: null
VESSELNAME: null
SAMPLE_ID: null
EQUIPMENT: null
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LONGITUDE: null
LATITUDE: null
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MUD_PCT: null
SAND_PCT: null
GRAVEL_PCT: null
PSA_DESC: null
FOLK_CLASS: muddy sandy Gravel
Drawing Tool: esriFeatureEditToolPoint
ID: Unclassified
Name: No data at this level of Folk
Domains:
Templates:
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DESCRIPT: null
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MUD_PCT: null
SAND_PCT: null
GRAVEL_PCT: null
PSA_DESC: null
FOLK_CLASS: Unclassified
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Supported Operations:
Query
Query Attachments
Calculate
Validate SQL
Generate Renderer
Return Updates
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