INFOMAR Seabed Survey Acoustic Backscatter (seafloor hardness)

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Provided by Government Reform Unit, Dept of Public Expenditure & Reform

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Dataset information

Catalog

Data.gov.ie

Country of origin

Ireland

Updated

2022.03.16 04:35

Created

2013.06.20

Available languages

Irish

Keywords

bathymetric surveying, marine geology, single-beam, rv keary, earth science, hydrography, geoscientificinformation, geological survey ireland, hydrosphere, monitoring technique, multi-beam, atlantic region, m.v. cosantoir bradán, acoustic backscatter in the water column, north atlantic ocean, rv celtic explorer, celtic sea, bathymetric survey, rv tonn, environment, atlantic ocean, bathymetry, ireland, sonar, cherish, submarine morphology, sea bed, seafloor mapping, atlantic, lithosphere, emodnet bathymetry, rv geo, geology, sea, rv lir, irish sea and st. georges channel, north east atlantic ocean (limit 40w), infomar, oceans, rv celtic voyager, rv mallet, inishydro, lidar, ocean, backscatter, physical property, science, marine institute

Datasource

Official portal for European data link

Quality scoring

220

Dataset description

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 Analysing 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).

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