Development and Field Trials of a Drop-Down Video System (2003)
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
- Extent
- Distribution
- Quality
- Keywords
- Spatial Reference System
- Content
- Constraints
- Maintenance
- Metadata
Identification
- Identifier
- NRW_DS110096
- Alternative Title
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- Datblygu system fideo gwympo a'i threialu yn y maes
- Metadata Language
- English
- Lineage
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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 below, 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.
- Dataset Reference Date (Publication)
- 2004-01-31
Temporal Extent
- Begin date
- 2003-10-01
- End date
- 2003-10-05
- Topic category
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- Environment
Extent
Extent
- Geographic Extent
- St. George's Channel
- Geographic Extent
- Celtic Sea
- Geographic Extent
- Irish Sea
- Geographic Extent
- Menai Strait
))
Vertical Extent
- Medin Extent Keyword
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benthic boundary layer
Distribution
- Format Type and Description
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Documents
Documents
()
- Specification
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[A] Report (MS Word, pdf-format) [B] Data spreadsheet format (MS Excel) [C] Maps (MapInfo) [D] Video captures (mpg-files in MS MediaPlayer) [E] Images (jpeg-files in MS PhotoEditor)
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Documents
Documents
()
Quality
Data quality
- Quality Scope
- Dataset
- Lineage
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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 below, 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
Keywords
Keywords
- NRW Thesaurus
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- drop-down video
- marine monitoring (see also marine surveys)
- Tremadog Bay
- Menai Strait
- Milford Bay
- trials
- marine and freshwater inventory
- Type
- Theme
Citation
- Date (Publication)
- 2023-12-31
Keywords
- SeaDataNet Parameter Discovery Vocabulary
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- Unspecified
- Type
- Theme
Citation
- Date (Revision)
- 2021-01-06
Spatial Reference System
Content
Content Information
NRW Profile
Custom Elements
- NRW Related Title
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Development and field trials of a drop down video system
Constraints
Constraints
Limitations on Public Access and Use
- Restriction type
- Other restrictions
Access Constraints Directive
- Limitations
- no limitations
Access Constraints Text
- Other constraints
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There are no access restrictions to this data. NRW may release, publish or disseminate it freely.
Use Constraints
- Use constraints type
- Other restrictions
- Other constraints
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© 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
- File Identifier
- 4f4c4942-4343-5764-6473-313130303936 XML
- Metadata Language
- English
- Resource type
- Dataset
- Metadata Date
- 2024-05-31T09:14:13.957Z
- Metadata Standard Name
- NRW
- Metadata Standard Version
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1.0