a4d10f79cdaff22c41e554c3b9e264dc English f3204bb9caebe79523e45327f7b7f6e6 dataset Peter Tinsley Dorset Wildlife Trust Living Seas Manager Enquiries@derc.org.uk pointOfContact 2021-04-07 MEDIN Discovery metadata standard 2.3.8 urn:ogc:def:crs:EPSG::4326 2009 Seastar Survey and Dorset Wildlife Trust (DWT), Dorset Integrated Seabed Study (DORIS), Drop-camera survey 2011-07-01 publication 2011-07-01 creation 2011-07-01 revision DWT-DORIS Survey run by Seastar Survey for Dorset Wildlife Trust. Ground-truthing survey to identify important seabed habitats off Dorset. Survey transects were selected using multibeam bathymetry and backscatter survey results. 119 survey lines, either 500m or 1000m long, were surveyed using a number of video and still cameras attached to a frame lowered to the seabed. A live feed from the video camera to the survey vessel allowed continuous monitoring of the camera frame. High resolution video was continuously recorded from the seabed cameras and still photographs were taken using a surface controlled trigger. Survey vessel position was recorded by GPS, depth recorded by vessel echosounder. Semi-quantitative analysis of the video footage and quantitative analysis of the still photographs was carried out following the survey. Peter Tinsley Dorset Wildlife Trust Living Seas Manager Enquiries@derc.org.uk originator Peter Tinsley Dorset Wildlife Trust Living Seas Manager Enquiries@derc.org.uk custodian notPlanned Database Geographic Information System Image Movie Marine Environmental Data and Information Network Habitats and biotopes Land cover GEMET - INSPIRE themes, version 1.0 2008-01-06 revision Bottom Texture Seabed Texture Boundaries 2010-09-18 creation Habitats and biotopes INSPIRE THEMES 2011-02-16 creation Marine UNESCO 2003-01-01 creation Biodiversity GEMET 2011-07-06 creation Bathymetry and Elevation SeaDataNet PDV 2011-07-13 revision Habitat characterisation Seabed photography SeaDataNet P021 parameter discovery vocabulary 2009-11-16 revision Multibeam Backscatter Gardline 2012-03-16 creation Data is freely available for research or commercial use providing that the originators are acknowledged in any publications produced. otherRestrictions No restrictions to public access English biota imageryBaseMapsEarthCover Charting Progress 2 Sea Areas 2009-06-18 creation Eastern Channel Charting Progress 2 Sea Areas 2009-06-18 creation Western Channel and Celtic Sea ICES Rectangles 2009-05-01 creation 29E7 ICES Rectangles 2009-05-01 creation 30E7 ICES Rectangles 2009-05-01 creation 29E8 ICES Rectangles 2009-05-01 creation 30E8 -2.6191 -1.9017 50.4491 50.6561 2009-06-02 2009-09-27 Peter Tinsley Dorset Wildlife Trust Living Seas Manager Enquiries@derc.org.uk distributor http://www.dorsetwildlifetrust.org.uk/doris.html Dorset Wildlife Trust: DORIS: Dorset Integrated Seabed Study A link to the general host site dataset MEDIN data guideline for transfer video survey data 2011-02-02 publication See the referenced specification true Seabed digital photographs and video collected from 500m to 1km long transects using cameras mounted on a seabed camera frame. Transects were selected with reference to multibeam bathymetry and backscatter and planned to cover as much of the range of environmental features of the area as possible. The camera frame was lowered to the seabed and drifted along above the seabed at a rate of approx 0.5 kts. Live video feed was monitored in the survey vessel and still photos taken using a trigger in the wheelhouse. Survey vessel position was derived from DGPS.