INFOMAR Seabed Survey Backscatter

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Science and Technology

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).

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Additional Information

Title INFOMAR Seabed Survey Backscatter
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 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).

Contact Point name: INFOMAR
email: jetstream@gsi.ie
phone: +353-1-6782000
Keywords atlantic ocean, backscatter, celtic sea, earth science, geography, geology, geoscientificinformation, hydrography, hydrosphere, infomar, irish sea and st. george's channel, lithosphere, monitoring technique, north-east atlantic ocean, oceans, science, sea, sea bed, seabed mapping, seabed survey, submarine morphology, survey
Theme Science and Technology
Publisher Geological Survey of Ireland
Issue Date 20 Jun 2013
Conforms To 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.
Last Modification Date 03 Jan 2017
Publication Frequency continual
Language eng
Landing Page http://maps.marine.ie/arcgis/services/Infomar/Backscatter_All_Surveys/ImageServer/WMSServer?request=GetCapabilities&service=WMS
Geographic Coverage North: 57.1, South: 50.01, East: -5.01, West: -17.1
Vertical Extent Domain name: sea level, Min value: -5000, Max value: -1
Lineage <10 backscatter survey.
Temporal Extent From: 1999-01-01 06:00, To: n/a
Spatial Reference System http://www.opengis.net/def/crs/EPSG/0/4326
Spatial Resolution 50000