Galway Bay Tidal Atlas

Published by: Marine Institute
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A tidal atlas or a tidal stream atlas is used to predict the direction and speed of tidal currents. A tidal atlas usually consists of a set of 12 or 13 diagrams, one for each hour of the tidal cycle, for a coastal region. Each diagram uses arrows to indicate the direction of the flow at that time. A spring tide is a tide just after a new or full moon, when there is the greatest difference between high and low water. A neap tide is a tide just after the first or third quarters of the moon when there is least difference between high and low water. This tidal atlas covers Galway Bay which is situated on the west coast of Ireland. The data used to create the Galway Bay tidal atlas was derived from the output of an operational hydrodynamic model of Galway Bay. The Galway Bay tidal atlas is managed by Oceanographic Services within Ocean Science and Information Services section of the Marine Institute (Ireland).

Data Resources (2)

available as WMS
available as json
Theme Environment
Date dataset released 2015-09-30
Date dataset updated 2017-12-13
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 Other
Language English
Landing Page
Geographic coverage in GeoJSON format {"type":"Polygon","coordinates":[[[-10.401, 52.951],[-10.401, 53.729], [-8.899, 53.729], [-8.899, 52.951], [-10.401, 52.951]]]}
Spatial Reference Systems (SRS) WGS 84 (EPSG:4326)
Vertical Extent {"maxVerticalExtent": "0", "verticalDomainName": "sea level", "minVerticalExtent": "0"}
Provenance information The tidal atlas was created using tidal predictions derived from the output of a 200-metre resolution hydrodynamic model of Galway Bay. The modeled currents were validated against a limited number of ADCP deployments in the bay. A tidal atlas provides average spring and neap tidal currents and so can only ever be used to provide an estimate of actual conditions pertaining in the bay at any point in time.
Period of time covered (begin) 1999-07-09