Aerial thermal imaging survey for Harbour seals, 2017 to 2018

Published by: Department of Housing, Local Government, and Heritage

Licensed under: Creative Commons Attribution 4.0

Category: Environment

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A helicopter survey carried out by the Sea Mammal Research Unit of the University of St Andrews to obtain abundance and distribution data on Harbour Seals and Grey Seals in Ireland during the Harbour Seal moult period (Aug-Sep), using thermal imaging and high resolution digital photography.

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Theme	Environment
Date released	2022-06-24
Date updated	2023-11-22
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	['http://creativecommons.org/licenses/by/4.0/', 'Copyright Government of Ireland. This dataset was created by National Parks and Wildlife Service, Department of Housing, Local Government and Heritage. This copyright material is licensed for re-use under the Creative Commons Attribution 4.0 International licence. http://creativecommons.org/licenses/by/4.0/', 'otherRestrictions']
Update frequency	Other
Language	English
Geographic coverage in GeoJSON format	{"type":"Polygon","coordinates":[[[-10.650444030762, 50.807923689449],[-10.650444030762, 55.993470564449], [-5.289115905762, 55.993470564449], [-5.289115905762, 50.807923689449], [-10.650444030762, 50.807923689449]]]}
Spatial Reference Systems (SRS)	WGS 84 (EPSG:4326)
Vertical Extent	{"verticalDomainName": "EPSG Projection 5731 - Malin Head height", "minVerticalExtent": "0", "maxVerticalExtent": "1014"}
Provenance information	Species identification and counts were derived from high resolution still photographs taken of all seals encountered. The locations of groups of seals were derived from comparing satellite imagery with still photos (containing GPS coordinates) and video footage recorded during each sighting, and placed on a digital GIS map containing mean high water and mean low water shapefiles, as well as satellite imagery. The survey covered the entire Irish coastline with the following exceptions: Inishbiggle and Annagh Island off the east side of Achill Island, Co. Mayo, were not surveyed. During the previous national survey in 2011&2012, 39 harbour seals and 3 grey seals were counted on these islands.
Period of time covered (begin)	2017-08-01
Period of time covered (end)	2018-11-30