INSS INFOMAR Seabed Survey Sound Velocity Profile

Category: Environment
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The INtegrated Mapping FOr the Sustainable Development of Ireland's MArine Resource (INFOMAR) programme is a joint venture between the Geological Survey of Ireland (GSI) and the Marine Institute (MI). The programme is the successor to the Irish National Seabed Survey (INSS) and concentrates on creating integrated mapping products related to the seabed. A sound velocity profile shows the speed of sound in water at different vertical levels. It has two general representations:

  1. tabular form, with pairs of columns corresponding to ocean depth and the speed of sound at that depth, respectively.
  2. a plot of the speed of sound in the ocean as a function of depth, where the vertical axis corresponds to the depth and the horizontal axis corresponds to the sound speed. By convention, the horizontal axis is placed at the top of the plot, and the vertical axis is labeled with values which increase from top to bottom, thus reproducing visually the ocean from its surface downward.

A Sound Velocity Profile (SVP) is a measurement of the speed of sound in water. SVP data is collected during multi-beam surveying for calibration purposes to ground-truth the bathymetric and backscatter data collection.

Data for SVP point locations and associated attribute values is generated from SVP profiler during survey. Data includes XY Longitude Latitude, Start SVP, End SVP, Maximum Depth, Data Quality and Comments, SVP Instrument Name and Survey Leg name.

Data Resources (4)

available as
available as json
available as GML
available as xml

Data Resource Preview - WFS GetCapabilities

Theme Environment
Date released 2013-06-20
Date updated 2021-05-17
Dataset conforms to these standards The INSPIRE Directive or INSPIRE lays down a general framework for a Spatial Data Infrastructure (SDI) for the purposes of European Community environmental policies and policies or activities which may have an impact on the environment.
Rights notes ['Creative Commons Attribution 4.0 International (CC BY 4.0) licence', '\n\nRights (can)\n\nShare- copy and redistribute the data in any medium or format\n\nAdapt- remix, transform, and build upon the material for any purpose, even commercially\n\nRequirements (must)\n\nAttribution- Give appropriate credit, provide a link to the licence, and indicate if changes were made. Do so in any reasonable manner, but not in any way that suggests the license endorses you or your use\n\nNo additional restrictions - may not apply legal terms or technological measures that legally restrict others from doing anything the license permits\n\nUnder the CC-BY Licence, users must acknowledge the source of the Information in their product or application.\n\nPlease use this specific attribution statement: "Contains Irish Public Sector Data (Geological Survey Ireland & Marine Institute) licensed under a Creative Commons Attribution 4.0 International (CC BY 4.0) licence".', 'license']
Update frequency Annual
Language English
Landing page
Geographic coverage in GeoJSON format {"type":"Polygon","coordinates":[[[-16.1, 51.2],[-16.1, 57.1], [-5.3, 57.1], [-5.3, 51.2], [-16.1, 51.2]]]}
Spatial Reference Systems (SRS) WGS 84 (EPSG:4326)
Vertical Extent {"verticalDomainName": "sea level", "minVerticalExtent": "-4600", "maxVerticalExtent": "-20"}
Provenance information Survey coverage area data is produced each year after the survey season is complete.
Period of time covered (begin) 2000-01-01
Period of time covered (end) 2021-01-19