HABMAP Acoustic Multibeam Echosounder Survey of Selected Areas of the Southern Irish Sea (Summer 2005)
The HABMAP project was set up in response to the need for better spatial awareness of habitat distributions in the Southern Irish Sea. It was a partnership project between partners in Wales and Ireland, and part funded by INTERREG IIIa European regional development fund. Data collection included acoustic data, sediment data and seabed imagery. These data were used to classify the seabed and feed into a predictive modelling process to predict benthic habitat. The multibeam data was collected in five locations throughout the Southern Irish Sea by the R/V Celtic Voyager to Irish National Seabed Survey (INSS) standard. They were then processed, cleaned and classified based on acoustic classes, which were then related to seabed sediment types. Bedforms were also identified using the MBES data. The Coordinate System used for the multibeam data was UTM Zone 30N. The xyz data was usually processed to a 5 m resolution. The purpose of this data capture was to obtain multibeam coverage of the five study areas identified to cover a variety of different environments with different physical properties and biological communities. This would be used to link backscatter intensity to physical properties of the seabed. Data depth corrected for tide using POLPRED software which utilises one or more of Proudman Oceanographic Laboratory's hydrodyamic models, and reduced to chart datum. 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
- Identifier
- NRW_DS115166
- Alternative Title
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- Arolwg ecoseinydd amlbaladr acwstig o ardaloedd penodedig yn ne Mor Iwerddon ar gyfer y prosiect HABMAP, haf 2005
- Metadata Language
- English
- Lineage
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Multibeam echosounder data acquired using Kongsberg Simrad EM1002 hull mounted on the Research Vessel (RV) Celtic Voyager. Frequency 93kHz (outer +/- 20 degrees) and 98kHz (inner +/- 50 degree swath centered at Nadir) utilising MERLIN software package. Swath ideally kept at maximum of 68 degrees to cover approximately 4.7 times water depth. Line spacing planned to give approximately 20 percent overlap.
- Dataset Reference Date (Publication)
- 2001-05-01
Temporal Extent
- Begin date
- 2005-06-14
- End date
- 2005-06-28
- Topic category
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- Oceans
Extent
Extent
- Geographic Extent
- Tremadog Bay
- Geographic Extent
- Cardigan Bay
- Geographic Extent
- Caernarfon Bay
- Geographic Extent
- St. George's Channel
- Geographic Extent
- St. Brides Bay
- Geographic Extent
- Celtic Sea
- Geographic Extent
- Irish Sea
))
Vertical Extent
- Medin Extent Keyword
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benthic boundary layer
Distribution
- Format Type and Description
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Image
(
)
- 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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Image
(
)
Quality
Data quality
- Quality Scope
- Dataset
- Lineage
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Multibeam echosounder data acquired using Kongsberg Simrad EM1002 hull mounted on the Research Vessel (RV) Celtic Voyager. Frequency 93kHz (outer +/- 20 degrees) and 98kHz (inner +/- 50 degree swath centered at Nadir) utilising MERLIN software package. Swath ideally kept at maximum of 68 degrees to cover approximately 4.7 times water depth. Line spacing planned to give approximately 20 percent overlap.
Keywords
Keywords
- Type
- Theme
Citation
- Date (Publication)
- 2008-06-01
Keywords
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NRW Thesaurus
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- Subtidal
- subtidal sediments
- HABMAP
- Type
- Theme
Citation
- Date (Publication)
- 2024-06-19
Keywords
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SeaDataNet Parameter Discovery Vocabulary
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- Acoustic backscatter in the water column
- Type
- Theme
Citation
- Date (Publication)
- 2024-06-19
Spatial Reference System
Content
Content Information
NRW Profile
Custom Elements
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 2009 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
- 4f4c4942-4343-5764-6473-313135313636 XML
- Metadata Language
- English
- Parent Identifier
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HABMAP Predictive Habitat Maps of the Irish Sea
NRW_DS101977
- Resource type
- Dataset
- Metadata Date
- 2024-07-16T15:55:43.392Z
- Metadata Standard Name
- NRW
- Metadata Standard Version
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1.0