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Metadata: 2009, EMU Ltd, Lynn and Inner Dowsing, Hydrographic Monitoring Survey
Abstract:
Emu Ltd conducted a series of hydrographic and geophysical monitoring surveys for Centrica Renewable Energy Limited at the Lynn and Inner Dowsing wind farm sites, primarily from 30 June to 26 July 2009, with additional ecological sampling in September 2009 and comparative surveys dating back to 2007. The purpose was to assess and map seabed habitats, particularly focusing on the extent and nature of biogenic features such as Sabellaria spinulosa reefs and Mytilus edulis (blue mussel) beds, in accordance with ecological and statutory monitoring requirements. Methodologies included swath and multibeam bathymetry, sidescan sonar, high-precision GPS, drop-down video and photographic analysis, sediment grab sampling, and laboratory analysis, with data validated by field verification and processed using advanced geospatial software. Key findings confirmed the presence of Sabellaria reefs (including borderline, low-lying features), patchy and non-reef Sabellaria occurrences, seed and old mussel beds, Ampelisca diadema aggregations, and varied sediment types, with survey results generally consistent with previous years and highlighting the dynamic nature of these habitats. Corresponding Centrica Document Title: Lynn and Inner Dowsing Hydrographic Monitoring Survey Available Datasets and supporting documentation: 1.GIS layers and MXDs; 2.Images(.jpg) ; 3.Videos ; 4. XYZ(.txt); 5. Documents and plots (.pdf)
Data holder:
The Crown Estate
| Other details | ||
| Internal code | Internally assigned metadata identifier | 28045 |
| Title | The title is used to provide a brief and precise description of the dataset such as 'Date', 'Originating organisation/programme', 'Location' and 'Type of survey'. All acronyms and abbreviations should be reproduced in full. | 2009, EMU Ltd, Lynn and Inner Dowsing, Hydrographic Monitoring Survey |
| Alternative title | The purpose of alternative title is to record any additional names by which the dataset may be known. | Hydrographic Monitoring Survey |
| File Identifier | The File Identifier is a code, preferably a GUID, that is globally unique and remains with the same metadata record even if the record is edited or transferred between portals or tools. | 88957a57-7df0-470c-a15e-3e47a044c63c |
| Resource Identifier | This is the code assigned by the data owner. | TCE-1078 |
| Resource type | The resource type will likely be a dataset but could also be a series (collection of datasets with a common specification) or a service. | series |
| Start date | This describes the date the resource starts. This may only be the year if month and day are not known | 2009-06-30 |
| End date | This describes the date the resource ends. This may only be the year if month and day are not known | 2009-09-12 |
| Spatial resolution | This describes the spatial resolution of the dataset or the spatial limitations of the service. | 40 |
| Spatial resolution unit | This describes the unit of spatial resolution which for distance must be metres. | urn:ogc:def:uom:EPSG::9001 |
| Frequency of updates | This describes the frequency with which the resource is modified or updated i.e. a monitoring programme that samples once per year has a frequency that is described as 'annually'. | notPlanned |
| Abstract | The abstract provides a clear and brief statement of the content of the resource. | Emu Ltd conducted a series of hydrographic and geophysical monitoring surveys for Centrica Renewable Energy Limited at the Lynn and Inner Dowsing wind farm sites, primarily from 30 June to 26 July 2009, with additional ecological sampling in September 2009 and comparative surveys dating back to 2007. The purpose was to assess and map seabed habitats, particularly focusing on the extent and nature of biogenic features such as Sabellaria spinulosa reefs and Mytilus edulis (blue mussel) beds, in accordance with ecological and statutory monitoring requirements. Methodologies included swath and multibeam bathymetry, sidescan sonar, high-precision GPS, drop-down video and photographic analysis, sediment grab sampling, and laboratory analysis, with data validated by field verification and processed using advanced geospatial software. Key findings confirmed the presence of Sabellaria reefs (including borderline, low-lying features), patchy and non-reef Sabellaria occurrences, seed and old mussel beds, Ampelisca diadema aggregations, and varied sediment types, with survey results generally consistent with previous years and highlighting the dynamic nature of these habitats. Corresponding Centrica Document Title: Lynn and Inner Dowsing Hydrographic Monitoring Survey Available Datasets and supporting documentation: 1.GIS layers and MXDs; 2.Images(.jpg) ; 3.Videos ; 4. XYZ(.txt); 5. Documents and plots (.pdf) |
| Lineage | Lineage includes the background information, history of the sources of data, data quality statements and methods. | The hydrographic survey was carried out using the vessel FPV Morven on a 24 hour operational basis simultaneously using the below Sensors : A fully motion aided Reson 8101 multibeam echosounder A Klein 3000 sidescan sonar system An Applanix POS MV precision attitude and positioning system The drop down video and grab survey was conducted using the survey vessel Arie Dirk. Daily progress logs can be found in Appendix B. Methodology used to achieve the project objectives are Horizontal Positioning, Swath Bathymetry survey, Sidescan Survey, Multibeam Acoustic Backscatter Survey, Drop Down Video and Grab Survey and Video and Stills Data Analysis |
| Related keywords | ||
| Keyword | General subject area(s) associated with the resource, uses multiple controlled vocabularies | Seabed photography |
| General subject area(s) associated with the resource, uses multiple controlled vocabularies | Sediment acoustics | |
| General subject area(s) associated with the resource, uses multiple controlled vocabularies | Bathymetry and Elevation | |
| General subject area(s) associated with the resource, uses multiple controlled vocabularies | Post-Construction monitoring | |
| General subject area(s) associated with the resource, uses multiple controlled vocabularies | Renewable Energy Lease area | |
| General subject area(s) associated with the resource, uses multiple controlled vocabularies | Offshore Cable Corridor | |
| General subject area(s) associated with the resource, uses multiple controlled vocabularies | Habitats and biotopes | |
| Geographical coverage | ||
| North | The northern-most limit of the data resource in decimal degrees | 53.22 |
| East | The eastern-most limit of the data resource in decimal degrees | 0.5 |
| South | The southern-most limit of the data resource in decimal degrees | 53.11 |
| West | The western-most limit of the data resource in decimal degrees | 0.36 |
| Responsible organisations | ||
| Role | The point of contact is person or organisation with responsibility for the creation and maintenance of the metadata for the resource. | pointOfContact |
| Organisation name | The Crown Estate | |
| enquiries@thecrownestate.co.uk | ||
| Role | The custodian is the person or organisation that accepts responsibility for the resource and ensures appropriate care and maintenance. If a dataset has been lodged with a Data Archive Centre for maintenance then this organisation is be entered here. | custodian |
| Organisation name | The Crown Estate | |
| Phone | +44 020 7851 5000 | |
| enquiries@thecrownestate.co.uk | ||
| Role | The originator is the person or organisation who created, collected or produced the resource. | originator |
| Organisation name | Emu Limited (Fugro EMU Limited) | |
| Position name | Project Surveyor | |
| n/a | ||
| Role | The distributor is the person or organisation that distributes the resource. | distributor |
| Organisation name | The Crown Estate | |
| Phone | +44 020 7851 5000 | |
| enquiries@thecrownestate.co.uk | ||
| Role | The owner is the person or organisation that owns the resource. | owner |
| Organisation name | XceCo Limited | |
| ask@xceco.co.uk | ||
| Resource locators | ||
| Locator URL | Web address (URL) that links to the resource | https://www.marinedataexchange.co.uk/details/TCE-1078/summary |
| Web address (URL) that links to the resource | https://www.marinedataexchange.co.uk | |
| Dataset constraints | ||
| 20.1 Limitations on Public Access - Access constraints | This states `otherRestrictions` from ISO vocabulary RestrictionCode and is an INSPIRE/GEMINI requirement. | otherRestrictions |
| 20.2 Limitations on Public Access - Other constraints | There will be no limitations when published on the Marine Data Exchange | |
| 21.1 Conditions for Access and Use - Use constraints | This states `otherRestrictions` from ISO vocabulary RestrictionCode and is an INSPIRE/GEMINI requirement. | otherRestrictions |
| 21.2 Conditions for Access and Use - Other constraints | This states any constraints on use of the data. Multiple conditions can be recorded for different parts of the data resource. If no conditions apply, then `No condtions apply` is recorded. This uses free text. | Data Must be used in accordance to the Marine Data Exchange's Terms of Use: https://www.marinedataexchange.co.uk/content/info/terms-of-use |
| Version info | ||
| Date of publication | The publication date of the resource or if previously unpublished the date that the resource was made publicly available via the MEDIN network. | 2021-05-17 |
| Harvest date | The date which this record has been (re)harvested from the provider. | 2026-08-12 |
| Metadata date | The date when the content of this metadata record was last updated. | 2026-08-11 |
| Metadata standard name | The name of the metadata standard used to create this metadata | MEDIN |
| Metadata standard version | The version of the MEDIN Discovery Metadata Standard used to create the metadata record | 3.1.2 |