Towed Video Surveys off the Coastline of the Llyn Peninsula North Wales (2013)
Surveys of the seabed were carried out using towed dropdown video surveys were taken aboard Lara B and William Stanley, both fishing vessels operating around Llyn Peninsula, Gwynedd, North Wales. A total of 38 video tows were collected from infralittoral and circalittoral habitats at the following five locations offshore from the Llyn Peninsular North Wales; Llyn-Hells Mouth, Ynys Gwlan, Porth Meudwy, North Llyn Modiolus and North Llyn sea Grass. Where available HD GoPro video footage was used in the analyses, however if this was not possible a lower quality standard definition footage was used. The locations of the video tows were made into GIS files as a spatial representation of the location of the tow surveys. Video surveys were conduct to conduct ground-truthing surveys through the seabed around the Llyn Peninsula, Gwynedd, North Wales.
- Dull adnabod
- Rhychwant
- Dosbarthiad
- Ansawdd
- Allweddeiriau
- System Cyfeirio Gofodol
- Cynnwys
- Cyfyngiadau
- Cynnal a chadw
- Metadata
Dull adnabod
- Dynodydd
- NRW_DS115838
- Teitl Amgen
-
- 2013 DRAFT Fisher Survey Towed Video Survey Llyn Peninsula, June. MRCCW31700000014
- Arolygon fideo llusgedig oddi ar lannau Llyn yng ngogledd Cymru, 2013.
- Laith Metadata
- English
- Datganiad
-
Drop-down video tows were carried out onboard small fishing boats using a High Definition (HD) GoPro video camera (approximate field of view is 100cm in the middle of the picture) and a Standard Definition ROVTECH Systems Micro Hi-Res Digital Colour Camera (1/3 inch Sony HAD CCD - 480 TV lines resolution) with 4.3mm wide angle lens (approx 80 degrees in water) and Mini Seabeam Lights. A manual log was kept of the location of the start and end of the transects, which were later digitized via GIS files. The video surveys were analysed for habitats, species and biotopes by Marine EcoSol using standard MNCR derived techniques and JNCC Marine Habitat Classifications. Drop-down video tows were carried out by Salacia Marine whilst onboard small fishing vessels.
- Dyddiad cyfeirnod y set ddata (Cyhoeddiad)
- 2014-10-31
Ystod amser
- Dyddiad cychwyn
- 2013-06-17
- Dyddiad gorffen
- 2013-06-19
- Categori pwnc
-
- Biota
Rhychwant
Rhychwant
- Hyd
- Irish Sea
- Hyd
- Cardigan Bay
- Hyd
- Tremadog Bay
))
Maint Fertigol
- Maint allweddair MEDIN
- benthic boundary layer
Maint Fertigol
- Gwerth lleiaf
- -29
- Gwerth uchaf
- -2
- System Gyfeirio Cydlynu Fertigol
- urn:ogc:def:datum:EPSG::5100 Sea Level depth is unadjusted and does not take into account tidal height
Dosbarthiad
- Fformat - Math a Disgrifiad
-
-
Documents
()
- Math
-
[A] Excel spreadsheets [B] Marine Recorder Survey number: MRCCW31700000014.
-
Documents
()
Ansawdd
Ansawdd Data
- Cwmpas Ansawdd
- Dataset
- Datganiad
-
Drop-down video tows were carried out onboard small fishing boats using a High Definition (HD) GoPro video camera (approximate field of view is 100cm in the middle of the picture) and a Standard Definition ROVTECH Systems Micro Hi-Res Digital Colour Camera (1/3 inch Sony HAD CCD - 480 TV lines resolution) with 4.3mm wide angle lens (approx 80 degrees in water) and Mini Seabeam Lights. A manual log was kept of the location of the start and end of the transects, which were later digitized via GIS files. The video surveys were analysed for habitats, species and biotopes by Marine EcoSol using standard MNCR derived techniques and JNCC Marine Habitat Classifications. Drop-down video tows were carried out by Salacia Marine whilst onboard small fishing vessels.
Allweddeiriau
Allweddair
- Math
- Theme
Dyfyniad
- Dyddiad (Cyhoeddiad)
- 2008-06-01
Allweddair
Allweddair
- SeaDataNet Parameter Discovery Vocabulary
-
- Seabed photography
- Habitat characterisation
- Math
- Theme
Dyfyniad
- Dyddiad (Adolygu)
- 2021-01-06
System Cyfeirio Gofodol
Cynnwys
Gwybodaeth Cynnwys
Proffil CNC
Elfennau CNC
Cyfyngiadau
Cyfyngiadau
Cyfyngiadau ar Fynediad a Defnydd Cyhoeddus
- Math o Gyfyngiad
- Other restrictions
Cyfarwyddeb Cyfyngiadau Mynediad
- Cyfyngiadau
- no limitations
Testun cyfyngiadau mynediad
- Cyfyngiadau eraill
-
Part of this dataset is sensitive and restricted. Sensitive data must be kept confidential; general release is not permitted due to risk of harm to the environment or third parties. Sensitive data may only be released under an appropriate NRW Licence. Requests should be referred to NRW's Access to Information Team. Data may be released freely if the sensitive records are removed in advance, or shown only at a coarser scale.
Defnyddiwch gyfyngiadau
- Cyfyngiadau Defnyddio
- Other restrictions
- Cyfyngiadau eraill
-
© CNC/NRW Recipients may only re-use sensitive data in strict confidence under the terms of an appropriate NRW Licence. No publication or dissemination is permitted, except if sensitive records are removed in advance, or shown only at a coarser scale.
Metadata
Metadata
- Dynodydd Ffeil
- 4f4c4942-4343-5764-6473-313135383338 XML
- Laith Metadata
- English
- Dynodydd Rhiant
-
Natural Resources Wales (NRW) Marine Benthic Species and Habitat Collation Held in Marine Recorder
NRW_DS114501
- Math o adnodd
- Dataset
- Dyddiad Metadata
- 2024-12-09T12:40:25.668Z
- Enw Safonol Metadata
- NRW
- Fersiwn Metadata
-
1.0