The term bathymetry refers to the ocean's depth relative to sea level, it can also be used to describe submarine topography or underwater terrain. INFOMAR bathymetry data is measured primarily by multibeam (MBES) and also singlebeam(SBES) echosounder devices.

MBES transducers transmit multiple high frequency pulses of sound in a fan shape beneath the vessel, enabling a large swath of seabed to be mapped at high resolution as the vessel moves along. The time taken for the sound to travel to and be reflected from the seabed back to the ship provides the water depth. Sound velocity profiles are taken to calibrate systems as data acquisition is ongoing.

The SBES operates in the same way as the MBES but just a single pulse of sound is emitted directly beneath the vessel.

Data Resources (8)

WWW:DOWNLOAD-1.0-HTTP--DOWNLOAD
available as www:download-1.0-http--download
HTML
available as HTML
HTML
available as HTML
Geological Survey Ireland home page
INFOMAR home page
Geological Survey Ireland home page
Marine Institute home page
Department of Communications, Climate Action and the Environment home page
Theme Environment
Date dataset released 2017-11-09
Date dataset updated 2020-05-26
Dataset conforms to these standards See the referenced specification
Rights notes ['Consult license for use limitations', 'otherRestrictions', 'otherRestrictions']
Update frequency Other
Language English
Geographic coverage in GeoJSON format {"type":"Polygon","coordinates":[[[-5.27233, 48.180187833],[-5.27233, 56.7], [-16.09085, 56.7], [-16.09085, 48.180187833], [-5.27233, 48.180187833]]]}
Provenance information Data supplied by Geological Survey Ireland.
Period of time covered (begin) 2000-01-01
Period of time covered (end) 9999-12-31

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