View In:
ArcGIS Online Map Viewer
Name: IE_GSI_MI_Marine_Download_Seabed_Survey_Leg_Data_IE_Waters_WGS84
Display Field: VESSELNAME
Type: Feature Layer
Geometry Type: esriGeometryPolygon
Description: <DIV STYLE="text-align:Left;"><DIV><DIV><P STYLE="margin:8 0 0 0;"><SPAN>This data shows</SPAN><SPAN> areas where</SPAN><SPAN> survey leg report and bathymetry, backscatter and sub-bottom profile data</SPAN><SPAN> </SPAN><SPAN>exists and allows you to download the data. </SPAN><SPAN>The data was collected between </SPAN><SPAN>1996</SPAN><SPAN> and 2021.</SPAN></P><P STYLE="margin:8 0 0 0;"><SPAN><SPAN>Bathymetry is the measurement of how deep is the sea. Bathymetry is the study of the shape and features of the seabed. The name comes from Greek words meaning "deep" and “measure". </SPAN></SPAN></P><P STYLE="margin:8 0 0 0;"><SPAN>Bathymetry is collected on board boats working at sea and airplanes over land and coastline. 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 determine water depth. The strength of the sound wave is used to determine how hard the bottom of the sea is. In other words, backscatter is the measure of sound that is reflected by the seafloor and received by the sonar. A strong sound wave indicates a hard surface (rocks, gravel), and a weak return signal indicates a soft surface (silt, mud).</SPAN><SPAN> </SPAN><SPAN /></P><P STYLE="margin:8 0 0 0;"><SPAN>Another piece of equipment is used called a sub-bottom profiler.</SPAN><SPAN>Sub-bottom profile data shows the rock features and the sediment layers that are below the seabed. </SPAN></P><P STYLE="margin:8 0 0 0;"><SPAN /><SPAN /></P><P STYLE="margin:0 0 0 0;"><SPAN>LiDAR is another way to map the seabed, using airplanes. Two laser light beams are emitted from a sensor on-board an airplane. The red beam reaches the water surface and bounces back; while the green beam penetrates the water hits the seabed and bounces back. The difference in time between the two beams returning allows the water depth to be calculated. LiDAR is only suitable for shallow waters (up to 30m depth).</SPAN></P><P STYLE="margin:0 0 0 0;"><SPAN /></P><P STYLE="margin:0 0 0 0;"><SPAN>This data shows areas which have data available for download in Irish waters. </SPAN></P><P STYLE="margin:0 0 0 0;"><SPAN /></P><P STYLE="margin:0 0 0 0;"><SPAN><SPAN>It is a vector dataset. Vector data portray the world using points, lines, and polygons (areas).</SPAN></SPAN></P><P STYLE="margin:0 0 0 0;"><SPAN>This data is shown as polygons. Each polygon holds information on the </SPAN><SPAN>survey leg details (name, vessel, year,date etc). It also provides links where available to download </SPAN><SPAN>bathymetry</SPAN><SPAN> </SPAN><SPAN>(GEOTIFF, ESRI GRID</SPAN><SPAN>, xyz</SPAN><SPAN>),</SPAN><SPAN> </SPAN><SPAN>backscatter</SPAN><SPAN> </SPAN><SPAN>(GEOTIFF), survey report (pdf) and sub-bottom profile (SEGY) data in various formats.</SPAN></P><P STYLE="margin:0 0 0 0;"><SPAN /></P><P STYLE="margin:0 0 0 0;"><SPAN><SPAN>The data available for download are raster datasets. Raster data is another name for gridded data. Raster data stores information in pixels (grid cells). Each raster grid makes up a matrix of cells (or pixels) organised into rows and columns.</SPAN></SPAN></P><P STYLE="margin:0 0 0 0;"><SPAN /><SPAN /></P><P STYLE="margin:0 0 0 0;"><SPAN>This data was collected using a boat or plane. Data is output in xyz format. X and Y are the location and Z is the depth or backscatter value. A software package converts it into gridded data. The grid cell size varies. </SPAN><SPAN>If the </SPAN><SPAN>resolution</SPAN><SPAN> is </SPAN><SPAN>10m </SPAN><SPAN> - </SPAN><SPAN> Each grid cell size is 10 meter by 10 meter. This means that each cell (pixel) represents an area of 10 meter squared.</SPAN></P><P STYLE="margin:0 0 0 0;"><SPAN /></P><P STYLE="margin:0 0 0 0;"><SPAN><SPAN>ESRI GRID datasets contain the depth value. This means you can click on a location and get its depth.</SPAN></SPAN></P><P STYLE="margin:8 0 0 0;"><SPAN>GEOTIFFS are images of the data and only record colour values. We use software to create a 3D effect of what the seabed looks like. By using vertical exaggeration, artificial sun-shading (mostly as if there is a light source in the northwest) and colouring the depths using colour maps, it is possible to highlight the subtle relief of the seabed. The darker shading represents a deeper depths and lighter shading represents shallower depths.</SPAN></P><P STYLE="margin:8 0 0 0;"><SPAN>The gridded XYZ data is also available.</SPAN></P><P STYLE="margin:8 0 0 0;"><SPAN /></P><P STYLE="margin:0 0 0 0;"><SPAN>This data shows areas that have been surveyed. There are plans to fill in the missing areas between 2020 and 2026. The deeper offshore waters were mapped as part of the Irish National Seabed Survey (INSS) between 1999 and 2005. INtegrated Mapping FOr the Sustainable Development of Ireland's MArine Resource (INFOMAR) is mapping the inshore areas. (2006 - 2026).</SPAN></P></DIV></DIV></DIV>
Service Item Id: 5708fce5742942f09478ac6f6a3767df
Copyright Text: Contains Irish Public Sector Data (Geological Survey Ireland & Marine Institute) licensed under a Creative Commons Attribution 4.0 International (CC BY 4.0) licence
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: -25.887672
YMin: 46.745937999999995
XMax: -3.56636350399998
YMax: 63.191624447
Spatial Reference: 4326
(4326)
Drawing Info:
Renderer:
Unique Value Renderer:
Field 1: DATASTATUS
Field 2: N/A
Field 3: N/A
Field Delimiter: ,
Default Symbol:
Default Label: N/A
UniqueValueInfos:
-
Value: Available
Label: Available
Description: N/A
Symbol:
Style: esriSFSSolid
Color:
[39, 176, 41, 255]
Outline:
Style: esriSLSSolid
Color:
[110, 110, 110, 255]
Width: 0
-
Value: NA
Label: Not Available
Description: N/A
Symbol:
Style: esriSFSSolid
Color:
[255, 170, 0, 255]
Outline:
Style: esriSLSSolid
Color:
[110, 110, 110, 255]
Width: 0
-
Value: Undergoing processing
Label: Undergoing processing
Description: N/A
Symbol:
Style: esriSFSSolid
Color:
[255, 170, 0, 255]
Outline:
Style: esriSLSSolid
Color:
[110, 110, 110, 255]
Width: 0
Transparency: 0
Labeling Info:
Advanced Query Capabilities:
Supports Statistics: true
Supports OrderBy: true
Supports Distinct: true
Supports Pagination: true
Supports TrueCurve: true
Supports Returning Query Extent: true
Supports Query With Distance: true
Supports Sql Expression: true
Supports Query With ResultType: true
Supports Returning Geometry Centroid: false
HasZ: false
HasM: false
Has Attachments: false
HTML Popup Type: esriServerHTMLPopupTypeAsHTMLText
Type ID Field: DATASTATUS
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: 24, defaultValue: null, modelName: SURVEY_ID
)
-
VESSELNAME
(
type: esriFieldTypeString, alias: Vessel Name, editable: true, nullable: true, length: 22, defaultValue: null, modelName: VESSELNAME
)
-
SURVEYYEAR
(
type: esriFieldTypeSmallInteger, alias: Year of Survey, editable: true, nullable: false, defaultValue: null, modelName: SURVEYYEAR
)
-
START_DATE
(
type: esriFieldTypeDate, alias: Survey Start Date, editable: true, nullable: true, length: 8, defaultValue: null, modelName: START_DATE
)
-
END_DATE
(
type: esriFieldTypeDate, alias: Survey End Date, editable: true, nullable: true, length: 8, defaultValue: null, modelName: END_DATE
)
-
IHO_STAND
(
type: esriFieldTypeString, alias: IHO Standard, editable: true, nullable: true, length: 5, defaultValue: null, modelName: IHO_STAND
)
-
COLLECTOR
(
type: esriFieldTypeString, alias: Data Collector, editable: true, nullable: true, length: 254, defaultValue: null, modelName: COLLECTOR
)
-
PARTNER
(
type: esriFieldTypeString, alias: Partner, editable: true, nullable: true, length: 254, defaultValue: null, modelName: PARTNER
)
-
PROJECT
(
type: esriFieldTypeString, alias: Project, editable: true, nullable: true, length: 254, defaultValue: null, modelName: PROJECT
)
-
BY_INFOMAR
(
type: esriFieldTypeString, alias: INFOMAR Survey, editable: true, nullable: true, length: 5, defaultValue: null, modelName: BY_INFOMAR
)
-
SUMREPURL
(
type: esriFieldTypeString, alias: Summary Report URL, editable: true, nullable: true, length: 200, defaultValue: null, modelName: SUMREPURL
)
-
SURVREPURL
(
type: esriFieldTypeString, alias: Survey Report URL, editable: true, nullable: true, length: 200, defaultValue: null, modelName: SURVREPURL
)
-
DATASTATUS
(
type: esriFieldTypeString, alias: Data Status, editable: true, nullable: true, length: 200, defaultValue: null, modelName: DATASTATUS
)
-
XYZ_STATUS
(
type: esriFieldTypeString, alias: XYZ Status, editable: true, nullable: true, length: 50, defaultValue: null, modelName: XYZ_STATUS
)
-
XYZ_URL
(
type: esriFieldTypeString, alias: XYZ URL, editable: true, nullable: true, length: 150, defaultValue: null, modelName: XYZ_URL
)
-
GRIDSTATUS
(
type: esriFieldTypeString, alias: ESRI GRID Status, editable: true, nullable: true, length: 50, defaultValue: null, modelName: GRIDSTATUS
)
-
GRID_URL
(
type: esriFieldTypeString, alias: ESRI GRID URL, editable: true, nullable: true, length: 150, defaultValue: null, modelName: GRID_URL
)
-
SR_STATUS
(
type: esriFieldTypeString, alias: Shaded Relief Status, editable: true, nullable: true, length: 50, defaultValue: null, modelName: SR_STATUS
)
-
SR_URL
(
type: esriFieldTypeString, alias: Shaded Relief URL, editable: true, nullable: true, length: 150, defaultValue: null, modelName: SR_URL
)
-
BS_STATUS
(
type: esriFieldTypeString, alias: Backscatter Status, editable: true, nullable: true, length: 50, defaultValue: null, modelName: BS_STATUS
)
-
BS_URL
(
type: esriFieldTypeString, alias: Backscatter URL, editable: true, nullable: true, length: 150, defaultValue: null, modelName: BS_URL
)
-
BOATIMGURL
(
type: esriFieldTypeString, alias: Vessel Image URL, editable: true, nullable: true, length: 150, defaultValue: null, modelName: BOATIMGURL
)
-
SBP_STATUS
(
type: esriFieldTypeString, alias: SEGY Subbottom Status, editable: true, nullable: true, length: 50, defaultValue: null, modelName: SBP_STATUS
)
-
SBP_URL
(
type: esriFieldTypeString, alias: SEGY Subbottom URL, editable: true, nullable: true, length: 150, defaultValue: null, modelName: SBP_URL
)
-
REP_STATUS
(
type: esriFieldTypeString, alias: Report Status, editable: true, nullable: true, length: 50, defaultValue: null, modelName: REP_STATUS
)
-
DOWNLEGID
(
type: esriFieldTypeString, alias: Download Survey Leg ID, editable: true, nullable: false, length: 25, defaultValue: null, modelName: DOWNLEGID
)
-
GLOBALID
(
type: esriFieldTypeGlobalID, alias: GLOBALID, editable: false, nullable: false, length: 38, defaultValue: null, modelName: GLOBALID
)
-
Shape__Area
(
type: esriFieldTypeDouble, alias: SHAPE.AREA, editable: false, nullable: false, defaultValue: null, modelName: SHAPE.AREA
)
-
Shape__Length
(
type: esriFieldTypeDouble, alias: SHAPE.LEN, editable: false, nullable: false, defaultValue: null, modelName: SHAPE.LEN
)
Types:
ID: Available
Name: Available
Domains:
Templates:
-
Name: Available
Description:
Prototype:
SURVREPURL: null
DOWNLEGID: null
SURVEY_ID: null
VESSELNAME: null
SURVEYYEAR: null
START_DATE: null
END_DATE: null
IHO_STAND: null
COLLECTOR: null
PARTNER: null
PROJECT: null
BY_INFOMAR: null
SUMREPURL: null
DATASTATUS: Available
XYZ_STATUS: null
XYZ_URL: null
GRIDSTATUS: null
GRID_URL: null
SR_STATUS: null
SR_URL: null
BS_STATUS: null
BS_URL: null
BOATIMGURL: null
SBP_STATUS: null
SBP_URL: null
REP_STATUS: null
Drawing Tool: esriFeatureEditToolPolygon
ID: NA
Name: Not Available
Domains:
Templates:
-
Name: Not Available
Description:
Prototype:
SURVREPURL: null
DOWNLEGID: null
SURVEY_ID: null
VESSELNAME: null
SURVEYYEAR: null
START_DATE: null
END_DATE: null
IHO_STAND: null
COLLECTOR: null
PARTNER: null
PROJECT: null
BY_INFOMAR: null
SUMREPURL: null
DATASTATUS: NA
XYZ_STATUS: null
XYZ_URL: null
GRIDSTATUS: null
GRID_URL: null
SR_STATUS: null
SR_URL: null
BS_STATUS: null
BS_URL: null
BOATIMGURL: null
SBP_STATUS: null
SBP_URL: null
REP_STATUS: null
Drawing Tool: esriFeatureEditToolPolygon
ID: Undergoing processing
Name: Undergoing processing
Domains:
Templates:
-
Name: Undergoing processing
Description:
Prototype:
SURVREPURL: null
DOWNLEGID: null
SURVEY_ID: null
VESSELNAME: null
SURVEYYEAR: null
START_DATE: null
END_DATE: null
IHO_STAND: null
COLLECTOR: null
PARTNER: null
PROJECT: null
BY_INFOMAR: null
SUMREPURL: null
DATASTATUS: Undergoing processing
XYZ_STATUS: null
XYZ_URL: null
GRIDSTATUS: null
GRID_URL: null
SR_STATUS: null
SR_URL: null
BS_STATUS: null
BS_URL: null
BOATIMGURL: null
SBP_STATUS: null
SBP_URL: null
REP_STATUS: null
Drawing Tool: esriFeatureEditToolPolygon
Capabilities: Query,Extract
Sync Can Return Changes: false
Is Data Versioned: false
Supports Rollback On Failure: false
Supports ApplyEdits With Global Ids: true
Supports Query With Historic Moment: false
Supports Coordinates Quantization: true
Supported Operations:
Query
Query Attachments
Calculate
Validate SQL
Generate Renderer
Return Updates
Iteminfo
Thumbnail
Metadata