European Directory of Marine Environmental Data (EDMED)

Data set information

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General
Data set name

INFOMAR Seabed Survey Backscatter around Ireland

Data holding centreGeological Survey of Ireland
CountryIreland  Ireland
Time period1999-2015
OngoingYes
Geographical area

Irish Continental Shelf

Observations 
Parameters

Date and time; Bathymetry and Elevation; Sedimentary structure

Instruments

Acoustic backscatter sensors

Description 
Summary

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).

OriginatorsGeological Survey of Ireland
Marine Institute
Data web sitehttp://www.isde.ie/#/64026090-7383-43ac-a091-c771de2d506f
Availability 
OrganisationGeological Survey of Ireland
AvailabilityLicence
ContactArchie Donovan (Geologist)
Address

Geological Survey of Ireland
Beggars Bush Barracks 25 Haddington Road
Dublin

Dublin 4
Ireland

Telephone+353 1 678 2000
Facsimile+353 1 668 1782
Administration 
Collating centreMarine Institute
Local identifierGE.IE.GSI.INFOMAR.Backscatter
Global identifier6513
Last revised2015-09-14