INFOMAR Seabed Survey Backscatter

Theme: Science
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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. Backscatter is the reflection of waves back to the direction they came from. By analyzing the amplitude of the returning sound wave it is possible to extract information about bottom structure and hardness, allowing for identification of bottom types. The bottom reflectivity properties depend on the hardness and the roughness of the seafloor surface. In simple terms a strong return signal indicates a hard surface (rocks, gravel), and a weak return signal indicates a soft surface (silt, mud).

Data Resources (5)

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Theme Science
Date dataset released 2013-06-20
Date dataset updated 2017-01-03
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 licence conditions apply', '', 'license', '', 'license']
Update frequency Continuously updated
Language English
Landing Page
Geographic coverage in GeoJSON format {"type":"Polygon","coordinates":[[[-17.1, 50.01],[-17.1, 57.1], [-5.01, 57.1], [-5.01, 50.01], [-17.1, 50.01]]]}
Spatial Reference Systems (SRS) WGS 84 (EPSG:4326)
Vertical Extent {"maxVerticalExtent": "-1", "verticalDomainName": "sea level", "minVerticalExtent": "-5000"}
Provenance information <10 backscatter survey.
Period of time covered (begin) 1999-01-01