Development and Field Trials of a Drop-Down Video System (2003)
Datblygu system fideo gwympo a'i threialu yn y maes

  • English
  • wel
  • All

Envision Mapping was contracted by the Countryside Council for Wales (CCW) to develop a purpose built drop-down video system suitable for marine monitoring work. Detailed specifications were prepared and the system was manufactured by C-Technics, a specialist underwater video systems manufacturer. The system was trialled during the manufacturing process and modifications made prior to the system being completed. Upon completion the system was commissioned at three locations in Wales. This tested the system in field conditions for both operational suitability and also enabled the system to be modified to best suit the requirements of CCW.

Identification

Dynodydd
Identifier
NRW_DS110096
Laith Metadata
Metadata Language
English
Lineage

The system was deployed in various sea states over a 5 day period, in Tremadog Bay, close to St Tudwal’s Islands, the Menai Strait and Milford Haven. The system was deployed from the RIB Aplysia and the RV Skalmey. The methods used were similar to the procedural and operational guidelines presented in the report, but various configuration of camera position, buoyancy and towing techniques were tried.


The equipment and deployment techniques were refined and adjusted to produce the optimal configuration and operational techniques for various conditions and these methods are presented in the procedural and operational guidelines.


Recommendations are made for methods of data collection, the effects of weather conditions, sea state and tides on the deployment of the system. Because the system is to be used on various vessels, examples of mobilisation configurations are presented.
Dyddiad cyfeirnod y set ddata (Cyhoeddiad)
Dataset Reference Date (Publication)
2004-01-31
Perchennog
Owner
  Natural Resources Wales (NRW) -
Maes-y-Ffynnon, Penrhosgarnedd, Bangor, Gwynedd, LL57 2DW, Wales
http://naturalresources.wales/?lang=en
Cychwynnwr
Originator
  Countryside Council for Wales (CCW) -
Countryside Council for Wales, Maes y Ffynnon, Penrhosgarnedd, Bangor, Gwynedd, LL57 2DW
http://naturalresourceswales.gov.uk/splash?orig=/
 

Extent

Extent

Hyd
Geographic Extent
St. George's Channel
Hyd
Geographic Extent
Celtic Sea
Hyd
Geographic Extent
Irish Sea
Hyd
Geographic Extent
Menai Strait
N
W
E
S
Map representing the geographic extent of the dataset


 

Vertical Extent

Medin Extent Keyword

benthic boundary layer
 
 

Distribution

Dosbarthiad
Distribution

Fformat - Math a Disgrifiad
Format Type and Description
  • Documents ( )

    Specification

    [A] Report (MS Word, pdf-format)

  • Delimited ( MS Excel )

    Specification

    [B] Data spreadsheet format (MS Excel)

  • Geographic Information System ( MapInfo )

    Specification

    [C] Maps (MapInfo)

  • Movie ( mpg )

    Specification

    [D] Video captures (mpg-files in MS MediaPlayer)

  • Image ( jpeg )

    Specification

    [E] Images (jpeg-files in MS PhotoEditor)

 

Quality

Ansawdd Data
Data quality

Cwmpas Ansawdd
Quality Scope
Dataset
Dataset
Cydymffurfiad
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

This dataset has not been assessed for conformance to the referenced INSPIRE regulation.
Degree
false
Lineage

The system was deployed in various sea states over a 5 day period, in Tremadog Bay, close to St Tudwal’s Islands, the Menai Strait and Milford Haven. The system was deployed from the RIB Aplysia and the RV Skalmey. The methods used were similar to the procedural and operational guidelines presented in the report, but various configuration of camera position, buoyancy and towing techniques were tried.


The equipment and deployment techniques were refined and adjusted to produce the optimal configuration and operational techniques for various conditions and these methods are presented in the procedural and operational guidelines.


Recommendations are made for methods of data collection, the effects of weather conditions, sea state and tides on the deployment of the system. Because the system is to be used on various vessels, examples of mobilisation configurations are presented.
 

Keywords

Allweddair
Keywords

GEMET - INSPIRE themes, version 1.0
Math
Type
Theme
Theme

Dyfyniad
Citation

Dyddiad (Cyhoeddiad)
Date (Publication)
2008-06-01
Code
geonetwork.thesaurus.external.theme.httpinspireeceuropaeutheme-theme

Allweddair
Keywords

NRW Thesaurus
  • marine and freshwater inventory
  • marine monitoring (see also marine surveys)
  • Menai Strait
  • Tremadog Bay
  • drop-down video
  • trials
  • Milford Bay
Math
Type
Theme
Theme

Dyfyniad
Citation

Dyddiad (Cyhoeddiad)
Date (Publication)
2025-01-08
Code
geonetwork.thesaurus.local.theme.converted_nrw-keywords

Allweddair
Keywords

SeaDataNet Parameter Discovery Vocabulary
Math
Type
Theme
Theme

Dyfyniad
Citation

Dyddiad (Cyhoeddiad)
Date (Publication)
2024-06-19
Code
geonetwork.thesaurus.external.theme.rdf+xml
 

Spatial Reference System

Code
Latitude and Longitude (EPSG::4326)
 

Content

Gwybodaeth Cynnwys
Content Information

Proffil CNC
NRW Profile

Elfennau CNC
Custom Elements

NRW Related Title

Development and field trials of a drop down video system
 

Constraints

Constraints

Limitations on Public Access and Use

Math o Gyfyngiad
Restriction type
Other restrictions
Other restrictions
 

Access Constraints Directive

Limitations
no limitations
 

Access Constraints Text

Other constraints

There are no access restrictions to this data. NRW may release, publish or disseminate it freely.
 

Use Constraints

Cyfyngiadau Defnyddio
Use constraints type
Other restrictions
Other restrictions
Other constraints

© CNC/NRW 2004. There are no use restrictions on this data. Recipients may re-use, reproduce, disseminate this data free of charge in any format or medium, provided they do so accurately, acknowledging both the source and NRW's copyright, and do not use it in a misleading context. It is the recipient's responsibility to ensure the data is fit for the intended purpose, that dissemination or publishing does not result in duplication, and that it is fairly interpreted. Advice on interpretation should be sought where required. To avoid re-using old data, users should periodically obtain the latest version from the original source
 
 
 

Metadata

Metadata

Dynodydd Ffeil
File Identifier
4f4c4942-4343-5764-6473-313130303936 XML
Laith Metadata
Metadata Language
English
Math o adnodd
Resource type
Dataset
Dataset
Dyddiad Metadata
Metadata Date
2026-03-03T15:11:42.656Z
Enw Safonol Metadata
Metadata Standard Name
NRW
Fersiwn Metadata
Metadata Standard Version

1.0

Pwynt Cyswllt
pointOfContact
  Natural Resources Wales (NRW) -
Maes-y-Ffynnon, Penrhosgarnedd, Bangor, Gwynedd, LL57 2DW, Wales
http://naturalresources.wales/?lang=en
 
 

Publishing Body

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