JNCC Acoustic Multibeam Echosounder Survey of Selected Sites off the North Coast of Anglesey as part of the Mapping European Seabed Habitats (MESH) Project (3rd Party Data)
During the summer of 2005, JNCC collaborated with partners of the HABMAP project to survey areas of potential Annex 1 habitat (primarily reef) in the Irish Sea. This was to support nature conservation initiatives beyond 12 nm North of Anglesey. This multibeam echosounder survey was carried out alongside single-beam data collection, seabed sampling and towed video imaging. Four areas of seabed covering approximately 140 sq km were surveyed and following data analysis, the area of study was broadly characterised by a complex topography and mixed sediment mosaics. The purpose of this data capture was to obtain MBES coverage of the study areas for further interpretation and analysis in conjunction with other data gathered in the area, for the purpose of identifying Annex 1 subtidal habitats. Confidence in data is high. Data depth corrected for tide using POLPRED software which utilises one or more of Proudman Oceanographic Laboratory's hydrodyamic models. CARIS HIPS / SIPS software used to create surfaces and gridded datasets by experienced surveyors.
- Identification
- Extent
- Distribution
- Quality
- Keywords
- Spatial Reference System
- Content
- Constraints
- Maintenance
- Metadata
Identification
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DynodyddIdentifier
- EXT_DS114969
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Teitl AmgenAlternative Title
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- Arolwg ecoseinydd amlbaladr acwstig o safleoedd penodol oddi ar arfordir gogledd Ynys Mon fel rhan o'r prosiect Mapio Cynefinoedd Gwelyau Mor Ewrop (MESH)
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Laith MetadataMetadata Language
- English
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Lineage
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Multibeam echosounder data acquired using Kongsberg Simrad EM1002 hull mounted on the R/V Celtic voyager. Frequency 93kHz (outer +/- 20 degrees) and 98kHz (inner +/- 50 degree swath centered at Nadir) utilising MERLIN software package. Swath ideally kept at max of 68n degrees to cover approximately 4.7 times water depth. Line spacing approximately 200 m giving 15-20% overlap. Three sound velocity drops made during cruise to calibrate to water conditions. Dataset collected as part of a collaborative cruise with JNCC and the Irish Marine Institute, data for the HABMAP project collected during the same cruise.
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Dyddiad cyfeirnod y set ddata (Cyhoeddiad)Dataset Reference Date (Publication)
- 2012-07-09
Extent
Extent
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HydGeographic Extent
- SIR YNYS MON - ISLE OF ANGLESEY
))
Vertical Extent
- Medin Extent Keyword
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benthic boundary layer
Maint Fertigol
Vertical Extent
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Gwerth lleiafMinimum value (metres)
- -30
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Gwerth uchafMaximum value (metres)
- -115
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System Gyfeirio Cydlynu FertigolVertical CRS
Distribution
Dosbarthiad
Distribution
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Fformat - Math a DisgrifiadFormat Type and Description
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Documents
()
- Specification
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[A] xyz data in .txt and .TAB format [B] CARIS HIPS raw data format [C] GeoTiff images
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Documents
()
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Lleolwr AdnoddauResource Locator
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View Metadata
World Wide Web page
Quality
Ansawdd Data
Data quality
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Cwmpas AnsawddQuality Scope
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DatasetDataset
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CydymffurfiadConformity
- 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
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Lineage
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Multibeam echosounder data acquired using Kongsberg Simrad EM1002 hull mounted on the R/V Celtic voyager. Frequency 93kHz (outer +/- 20 degrees) and 98kHz (inner +/- 50 degree swath centered at Nadir) utilising MERLIN software package. Swath ideally kept at max of 68n degrees to cover approximately 4.7 times water depth. Line spacing approximately 200 m giving 15-20% overlap. Three sound velocity drops made during cruise to calibrate to water conditions. Dataset collected as part of a collaborative cruise with JNCC and the Irish Marine Institute, data for the HABMAP project collected during the same cruise.
Keywords
Allweddair
Keywords
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MathType
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ThemeTheme
Dyfyniad
Citation
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Dyddiad (Cyhoeddiad)Date (Publication)
- 2008-06-01
Allweddair
Keywords
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NRW Thesaurus
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- multibeam
- Habitats and Species Directive
- sediments
- reef
- HABMAP
- MESH
- 3rd Party Data
- Third Party Data
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MathType
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ThemeTheme
Dyfyniad
Citation
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Dyddiad (Cyhoeddiad)Date (Publication)
- 2023-12-31
Allweddair
Keywords
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SeaDataNet Parameter Discovery Vocabulary
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- Acoustic backscatter in the water column
- Bathymetry and Elevation
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MathType
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ThemeTheme
Dyfyniad
Citation
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Dyddiad (Adolygu)Date (Revision)
- 2021-01-06
Spatial Reference System
Content
Gwybodaeth Cynnwys
Content Information
Proffil CNC
NRW Profile
Elfennau CNC
Custom Elements
- NRW Related Title
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Broad-scale biotope mapping of potential reefs in the Irish sea (north-west of Anglesey)
Constraints
Constraints
Limitations on Public Access and Use
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Math o GyfyngiadRestriction type
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Other restrictionsOther restrictions
Access Constraints Directive
- Limitations
- no limitations
Access Constraints Text
- Other constraints
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This dataset is wholly owned by Joint Nature Conservancy Committee. NRW may provide access to this dataset on request in some circumstances. However, 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.
Use Constraints
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Cyfyngiadau DefnyddioUse constraints type
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Other restrictionsOther restrictions
- Other constraints
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© JNCC 2008. NRW does NOT grant permission to third parties to re-use or disseminate this dataset. Those seeking such permission should approach the originator directly.
Metadata
Metadata
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Dynodydd FfeilFile Identifier
- 4f4c4942-4343-5764-6473-313134393639 XML
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Laith MetadataMetadata Language
- English
- Parent Identifier
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Multibeam Acoustic Data Index
NRW_DS121633
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Math o adnoddResource type
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DatasetDataset
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Dyddiad MetadataMetadata Date
- 2024-05-30T15:37:19.757Z
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Enw Safonol MetadataMetadata Standard Name
- NRW
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Fersiwn MetadataMetadata Standard Version
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1.0