Bangor University School of Ocean Science (SOS) Towed Video Survey in Liverpool Bay; Caernarfon Bay and Cardigan Bay (2012 - 2013)

In 2012 and 2013 video tows and photographic surveys were undertaken to ground truth the seabed around Cardigan Bay, Caernarfon Bay and Liverpool Bay. The Bangor University School of Ocean Sciences (SOS) surveyed five sites, two using fishing vessels and three using the Bangor University Research Vessel (RV) Prince Madog. In total sixty video tows were undertaken within circalittoral habitats; six of these had associated photographic stills, of which there were 570. The purpose of this data capture was to ground truth areas of the seabed around Cardigan Bay, Caernarfon Bay and Liverpool Bay. Confidence in this dataset is high as data was collected by scientists. Imagery was analysed using standard methods by competent and experienced surveyors.

Identifier: NRW_DS115839

Alternative Title

2012 DRAFT Bangor University SOS Prince Madog Towed Video Survey in Liverpool Bay, October MRCCW31700000019
2013 DRAFT Bangor University SOS Prince Madog Towed Video Survey of Caernarfon Bay, July. MRCCW31700000018
2013 DRAFT Bangor University SOS Prince Madog Towed Video Survey in Cardigan Bay, July MRCCW31700000017
2012 DRAFT Fisher Survey Towed Survey in Cardigan Bay, October MRCCW31700000016
2013 DRAFT Bangor University SOS Prince Madog Towed Video Survey of Liverpool Bay, August MRCCW31700000015
Arolwg Fideo Llusg SOS Prifysgol Bangor ym Mae Lerpwl- Bae Caernarfon a Bae Ceredigion 2012 – 2013

Metadata Language: English

Lineage: Surveys were undertaken by Bangor University Research Vessel (RV) Prince Madog and various fishing vessels. RV Prince Madog was used to collect videos of the seabed using three cameras: - A Standard Definition (SD) ROVTECH Systems Ltd. underwater video camera with an approximate field of view of 41cm in the middle of the picture; - A High Definition (HD) GoPro video camera with approximate field of view of 70cm at the bottom of the picture and 100cm in the middle; - A Canon 400D stills camera with an approximate field of view of 0.13m squared (44cm by 30cm). Fishing vessels were used ot collect videos of the seabed using two cameras: - A GoPro HD video camera on a mini-sled towed behind a fishing vessel. The GoPro HD has approximate field of view of 70 cm at the bottom of the picture and 100 cm in the middle. - A Standard Definition ROVTECH Systems Micro Hi-Res Digital Colour Camera (1/3 inches Sony HAD CCD - 480 TV lines resolution) with 4.3 mm wide angle lens (approximately 80 degrees in water) and Mini Seabeam Light. Imagery was analysed for habitats, species and biotopes by Marine EcoSol using standard Marine Nature Conservation Review (MNCR) derived techniques and Joint Nature Conservation Committee (JNCC) Marine Habitat Classification. Photographic still, when taken, were approximately every 11 seconds along the tow to assist with species and habitat validation, but were not analysed independently of the video. Videos and stills were analysed by staff at Marine EcoSol and data was entered into excel spreadsheets and then into Marine Recorder.

Dataset Reference Date (Publication): 2014-09-30

Temporal Extent

Begin date: 2012-10-04

End date: 2013-08-11

Topic category

Oceans

Owner

University of Wales, Bangor. School of Ocean Sciences

Bangor, Gwynedd, LL57 2DG

http://www.bangor.ac.uk

Owner

Natural Resources Wales (NRW)

Maes-y-Ffynnon, Penrhosgarnedd, Bangor, Gwynedd, LL57 2DW, Wales

http://naturalresources.wales/?lang=en

Originator

University of Wales, Bangor. School of Ocean Sciences

Bangor, Gwynedd, LL57 2DG

http://www.bangor.ac.uk

Extent

Geographic Extent: Celtic Sea

Geographic Extent: Irish Sea

Geographic Extent: Dee Estuary

Geographic Extent: Liverpool Bay

Geographic Extent: Menai Strait

Geographic Extent: Tremadog Bay

Geographic Extent: Cardigan Bay

Map representing the geographic extent of the dataset

Vertical Extent

Medin Extent Keyword: benthic boundary layer

Vertical Extent

Minimum value (metres): -61.8m

Maximum value (metres): -11.9m

Vertical CRS: urn:ogc:def:datum:EPSG::5100 Sea Level depth is unadjusted and does not take into account tidal height

Format Type and Description

Movie ()

Specification

[A] Video footage in .VOB and .mp4 format. The video data is actually part of the data previously supplied (see media 1466 and is stored there - low, moderate & high qulaity) In this folder is the moderate quality video. [B] Survey locations in .tab format [C] Marine Recorder data to be entered (data received 2014-09-31 - to be merged with the main database) MRCCW31700000015 - 2013 DRAFT Bangor University SOS Prince Madog Towed Video Survey of Liverpool Bay, August. MRCCW31700000016 - 2012 DRAFT Fisher Survey Towed Survey in Cardigan Bay, October. MRCCW31700000017 - 2013 DRAFT Bangor University SOS Prince Madog Towed Video Survey in Cardigan Bay, July. MRCCW31700000018 - 2013 DRAFT Bangor University SOS Prince Madog Towed Video Survey of Caernarfon Bay, July. MRCCW31700000019 - 2012 DRAFT Bangor University SOS Prince Madog Towed Video Survey in Liverpool Bay, October.

Data quality

Quality Scope: Dataset

Conformity: Commission Regulation (EU) No 1089/2010 of 23 November 2010 implementing Directive 2007/2/EC of the European Parliament and of the Council as regards interoperability of spatial data sets and services
Explanation
Degree: false

Lineage: Surveys were undertaken by Bangor University Research Vessel (RV) Prince Madog and various fishing vessels. RV Prince Madog was used to collect videos of the seabed using three cameras: - A Standard Definition (SD) ROVTECH Systems Ltd. underwater video camera with an approximate field of view of 41cm in the middle of the picture; - A High Definition (HD) GoPro video camera with approximate field of view of 70cm at the bottom of the picture and 100cm in the middle; - A Canon 400D stills camera with an approximate field of view of 0.13m squared (44cm by 30cm). Fishing vessels were used ot collect videos of the seabed using two cameras: - A GoPro HD video camera on a mini-sled towed behind a fishing vessel. The GoPro HD has approximate field of view of 70 cm at the bottom of the picture and 100 cm in the middle. - A Standard Definition ROVTECH Systems Micro Hi-Res Digital Colour Camera (1/3 inches Sony HAD CCD - 480 TV lines resolution) with 4.3 mm wide angle lens (approximately 80 degrees in water) and Mini Seabeam Light. Imagery was analysed for habitats, species and biotopes by Marine EcoSol using standard Marine Nature Conservation Review (MNCR) derived techniques and Joint Nature Conservation Committee (JNCC) Marine Habitat Classification. Photographic still, when taken, were approximately every 11 seconds along the tow to assist with species and habitat validation, but were not analysed independently of the video. Videos and stills were analysed by staff at Marine EcoSol and data was entered into excel spreadsheets and then into Marine Recorder.

Keywords

GEMET - INSPIRE themes, version 1.0

Habitats and biotopes

Type: Theme

Citation

Date (Publication): 2008-06-01

Code: geonetwork.thesaurus.external.theme.httpinspireeceuropaeutheme-theme

Keywords

NRW Thesaurus

drop-down video
digital photography
photomonitoring (photographic monitoring)

Type: Theme

Citation

Date (Publication): 2023-12-31

Code: geonetwork.thesaurus.local.theme.converted_nrw-keywords

Keywords

SeaDataNet Parameter Discovery Vocabulary

Habitat characterisation

Type: Theme

Citation

Date (Revision): 2021-01-06

Code: geonetwork.thesaurus.external.theme.rdf+xml

Keywords

Integrated Public Sector Vocabulary

photography

Type: Theme

Citation

Date (Revision): 2013-04-03

Code: geonetwork.thesaurus.external.theme.subjects

Code: Latitude and Longitude (EPSG::4326)

Content Information

NRW Profile

Custom Elements

Constraints

Limitations on Public Access and Use

Restriction type: Other restrictions

Access Constraints Directive

Limitations: no limitations

Access Constraints Text

Other constraints: Video Footage and Images: This dataset is wholly owned by School of Ocean Sciences, Bangor University. Enquirers are advised to obtain a copy from the owner/originator directly, rather than NRW. NRW may NOT publish or disseminate it in its entirety. Species Data: Species data owned by Natural Resources Wales (NRW). There are no access restrictions on this data. NRW may release, publish or disseminate it freely.

Use Constraints

Use constraints type: Other restrictions

Other constraints: Video Footage and Images: © School of Ocean Sciences, Bangor University. NRW does NOT grant permission to third parties to re-use or disseminate this dataset. Species Data: © CNC/NRW Data may be re-used under the terms of the Open Government Licence providing it is done so, acknowledging both the source and copyright of the owners. It is the recipient's responsibility to ensure the data is fit for the intended purpose.

Metadata

File Identifier: 4f4c4942-4343-5764-6473-313135383339 XML

Metadata Language: English

Parent Identifier: Natural Resources Wales (NRW) Marine Benthic Species and Habitat Collation Held in Marine Recorder
NRW_DS114501

Resource type: Dataset

Metadata Date: 2024-05-31T09:32:12.225Z

Metadata Standard Name: NRW

Metadata Standard Version: 1.0

pointOfContact

Natural Resources Wales (NRW)

Maes-y-Ffynnon, Penrhosgarnedd, Bangor, Gwynedd, LL57 2DW, Wales

http://naturalresources.wales/?lang=en

Publishing Body

Access the portal

Full access to the portal and metadata.

Bangor University School of Ocean Science (SOS) Towed Video Survey in Liverpool Bay; Caernarfon Bay and Cardigan Bay (2012 - 2013)

Identification

Temporal Extent

Extent

Extent

Vertical Extent

Vertical Extent

Distribution

Quality

Data quality

Keywords

Keywords

Citation

Keywords

Citation

Keywords

Citation

Keywords

Citation

Spatial Reference System

Content

Content Information

NRW Profile

Custom Elements

Constraints

Constraints

Limitations on Public Access and Use

Access Constraints Directive

Access Constraints Text

Use Constraints

Metadata

Metadata

Publishing Body