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Marine/IE_GSI_MI_Bathymetry_100m_Offshore_IE_WGS84_LAT_GRID (ImageServer)

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Service Description:

This data shows the depth of the seabed around Ireland between 200 and 5000 metre depths. The data was collected in 1996 and between 2000 and 2002.

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".

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 data are collected as points in XYZ format. X and Y coordinates and Z (depth). The boat travels up and down the water in a series of lines (trackline). An XYZ file is created for each line and contains thousands of points. The line files are merged together and converted into gridded data to create a Digital Terrain Model of the seabed.

Colours are also used to show depth ranges. Reds and browns show heights above sea-level. Yellows and greens are shallow waters up to 45m deep. Blues (up to 110m deep) and purple show deeper waters up to 200m deep.

This is a raster dataset. Raster data stores information in a cell-based manner and consists of a matrix of cells (or pixels) organised into rows and columns. The format of the raster is a grid. The grid cell size is 100m by 100m. This means that each cell (pixel) represents an area on the seabed of 100 metres squared. Each cell has a depth value which is the average depth of all the points located within that cell.

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).



Name: Marine/IE_GSI_MI_Bathymetry_100m_Offshore_IE_WGS84_LAT_GRID

Description:

This data shows the depth of the seabed around Ireland between 200 and 5000 metre depths. The data was collected in 1996 and between 2000 and 2002.

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".

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 data are collected as points in XYZ format. X and Y coordinates and Z (depth). The boat travels up and down the water in a series of lines (trackline). An XYZ file is created for each line and contains thousands of points. The line files are merged together and converted into gridded data to create a Digital Terrain Model of the seabed.

Colours are also used to show depth ranges. Reds and browns show heights above sea-level. Yellows and greens are shallow waters up to 45m deep. Blues (up to 110m deep) and purple show deeper waters up to 200m deep.

This is a raster dataset. Raster data stores information in a cell-based manner and consists of a matrix of cells (or pixels) organised into rows and columns. The format of the raster is a grid. The grid cell size is 100m by 100m. This means that each cell (pixel) represents an area on the seabed of 100 metres squared. Each cell has a depth value which is the average depth of all the points located within that cell.

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).



Single Fused Map Cache: false

Extent: Initial Extent: Full Extent: Pixel Size X: 0.00127983076948206

Pixel Size Y: 0.0012798307694820601

Band Count: 1

Pixel Type: F32

RasterFunction Infos: {"rasterFunctionInfos": [{ "name": "None", "description": "", "help": "" }]}

Mensuration Capabilities: Basic

Has Histograms: true

Has Colormap: false

Has Multi Dimensions : false

Rendering Rule:

Min Scale: 0

Max Scale: 0

Copyright Text: Geological Survey Ireland & Marine Institute

Service Data Type: esriImageServiceDataTypeGeneric

Min Values: -4913.73828125

Max Values: -16.535715103149414

Mean Values: -2204.3784584569185

Standard Deviation Values: 1213.042284837009

Object ID Field:

Fields: None

Default Mosaic Method: Center

Allowed Mosaic Methods:

SortField:

SortValue: null

Mosaic Operator: First

Default Compression Quality: 75

Default Resampling Method: Bilinear

Max Record Count: null

Max Image Height: 4100

Max Image Width: 15000

Max Download Image Count: null

Max Mosaic Image Count: null

Allow Raster Function: true

Allow Copy: true

Allow Analysis: true

Allow Compute TiePoints: false

Supports Statistics: false

Supports Advanced Queries: false

Use StandardizedQueries: true

Raster Type Infos: Has Raster Attribute Table: false

Edit Fields Info: null

Ownership Based AccessControl For Rasters: null

Child Resources:   Info   Histograms   Statistics   Key Properties   Legend   Raster Function Infos

Supported Operations:   Export Image   Identify   Measure   Compute Histograms   Compute Statistics Histograms   Get Samples   Compute Class Statistics   Query Boundary   Compute Pixel Location   Validate   Project