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Emu Ltd was commissioned by SeaGeneration (Wales) Ltd to undertake a geophysical survey of the proposed tidal energy farm, located in The Skerries, off the north west coast of Anglesey. The aim of the survey was to determine and report on the subsurface and seabed conditions in order to facilitate the construction of the tidal energy farm. The survey was performed using swath bathymetry, sidescan sonar imaging, magnetometor, shallow seismic (boomer) and the collection of seabed samples for ground truthing. Survey lines were run using a line plan which amounted to approximately 90 line kilometres. The survey was carried out using the vessel FPV Morven between the 12th and the 22nd August 2008 utilising: • A fully motion aided Reson 8101 multibeam echosounder • An SES Sonar Mag digital sidescan sonar system and Edgetech 4200 digital sidescan sonar system, positioned with a Sonardyne Scout USBL • A Geometrics G-882 marine caesium vapour magnetometer • An Applied Acoustics AA200 boomer system • A stainless steel Shipek grab. Bathymetry data were reduced to Chart Datum at Holyhead using GPS tidal elevations recorded on board the survey vessel. The site of the proposed tidal energy farm has variable depths over the surveyed area. Depths range from 0 m to 50 m below Chart Datum (CD). Depth variations across the site appeared to correspond not only to exposed bedrock but also fingers of mobile and static sediment within the area. Coarse sand and bedrock dominated the central and western region of the surveyed area. Surrounding this area were regions that contained cobbled silt, gravelly pebbly cobbles, sandy gravel and cobbly sand. Bedforms with a maximum wave height of 2 m have been identified in the surveyed area and have their long axis generally orientated NNW-SSE. Pockets of sediment infilling the surface topography of the bedrock were clearly identified in the seismic data. The distribution and thickness of these sediment deposits have been mapped. As expected very little seismic penetration into the bedrock was achieved.
Marine Current Turbines Ltd
PROPRIETARY & CONFIDENTIAL INFORMATION. This document and the information set forth herein (the "information") are confidential and proprietary to Marine Current Turbines Ltd ("MCT"), constitute trade secrets and derive independent economic value, actual or potential, from not being generally known. In consideration of you receiving this document you agree (i) to keep the information secret, (ii) only to use the information for your owns needs to accomplish the task(s) agreed with MCT, (iii) not to disclose any part of the information to any third party and (iv) not to make copies or reproductions thereof by whatsoever means.
Other details | ||
Internal code | Internally assigned metadata identifier | 7223 |
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. | 2008, EMU, Skerries Tidal Site, Marine Geophysical 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. | 8ecb0c35-e313-49c0-95a1-b5335d3e88ef |
Resource Identifier | This is the code assigned by the data owner. | 08/J/1/02/1303/0824 |
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 | 2008-08-12 |
End date | This describes the date the resource ends. This may only be the year if month and day are not known | 2008-08-22 |
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 was commissioned by SeaGeneration (Wales) Ltd to undertake a geophysical survey of the proposed tidal energy farm, located in The Skerries, off the north west coast of Anglesey. The aim of the survey was to determine and report on the subsurface and seabed conditions in order to facilitate the construction of the tidal energy farm. The survey was performed using swath bathymetry, sidescan sonar imaging, magnetometor, shallow seismic (boomer) and the collection of seabed samples for ground truthing. Survey lines were run using a line plan which amounted to approximately 90 line kilometres. The survey was carried out using the vessel FPV Morven between the 12th and the 22nd August 2008 utilising: • A fully motion aided Reson 8101 multibeam echosounder • An SES Sonar Mag digital sidescan sonar system and Edgetech 4200 digital sidescan sonar system, positioned with a Sonardyne Scout USBL • A Geometrics G-882 marine caesium vapour magnetometer • An Applied Acoustics AA200 boomer system • A stainless steel Shipek grab. Bathymetry data were reduced to Chart Datum at Holyhead using GPS tidal elevations recorded on board the survey vessel. The site of the proposed tidal energy farm has variable depths over the surveyed area. Depths range from 0 m to 50 m below Chart Datum (CD). Depth variations across the site appeared to correspond not only to exposed bedrock but also fingers of mobile and static sediment within the area. Coarse sand and bedrock dominated the central and western region of the surveyed area. Surrounding this area were regions that contained cobbled silt, gravelly pebbly cobbles, sandy gravel and cobbly sand. Bedforms with a maximum wave height of 2 m have been identified in the surveyed area and have their long axis generally orientated NNW-SSE. Pockets of sediment infilling the surface topography of the bedrock were clearly identified in the seismic data. The distribution and thickness of these sediment deposits have been mapped. As expected very little seismic penetration into the bedrock was achieved. |
Lineage | Lineage includes the background information, history of the sources of data, data quality statements and methods. | Cretaed by The Crown Estate with the purpose of uploading the data on the MArine Data Exchange (MDE) |
Related keywords | ||
Keyword | General subject area(s) associated with the resource, uses multiple controlled vocabularies | Bathymetry and Seafloor topography |
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 | Magnetics | |
General subject area(s) associated with the resource, uses multiple controlled vocabularies | Side-scan sonar | |
General subject area(s) associated with the resource, uses multiple controlled vocabularies | Seismic reflection | |
General subject area(s) associated with the resource, uses multiple controlled vocabularies | Seismic refraction | |
General subject area(s) associated with the resource, uses multiple controlled vocabularies | Geophysical | |
General subject area(s) associated with the resource, uses multiple controlled vocabularies | Pre-Construction engineering | |
General subject area(s) associated with the resource, uses multiple controlled vocabularies | Agreement for Lease Area | |
General subject area(s) associated with the resource, uses multiple controlled vocabularies | Marine Environmental Data and Information Network | |
Keyword title | MEDIN | |
Keyword | General subject area(s) associated with the resource, uses multiple controlled vocabularies | Marine Environmental Data and Information Network |
Keyword title | MEDIN | |
Geographical coverage | ||
North | The northern-most limit of the data resource in decimal degrees | 53.4228 |
East | The eastern-most limit of the data resource in decimal degrees | -4.5645 |
South | The southern-most limit of the data resource in decimal degrees | 53.4152 |
West | The western-most limit of the data resource in decimal degrees | -4.5909 |
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 | Marine Current Turbines Ltd | |
Individual name | Scott Couch | |
Position name | Head of Site Development & Principal Resource Analyst | |
Phone | +44 (0)117 957 7600 | |
Fax | 00441179577699 | |
Delivery point | Bristol and Bath Science Park, Dirac Crescent, Emersons Green, Bristol, BS16 7FR | |
City | Bristol | |
URL | www.marineturbines.com | |
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 | Marine Current Turbines Ltd | |
Individual name | Scott Couch | |
Position name | Head of Site Development & Principal Resource Analyst | |
Phone | 00441179577600 | |
Fax | 00441179577699 | |
Delivery point | Bristol and Bath Science Park, Dirac Crescent, Emersons Green, Bristol, BS16 7FR | |
City | Bristol | |
URL | www.marineturbines.com | |
Role | The distributor is the person or organisation that distributes the resource. | distributor |
Organisation name | Marine Current Turbines Ltd | |
Individual name | Scott Couch | |
Position name | Head of Site Development & Principal Resource Analyst | |
Phone | 00441179577600 | |
Fax | 00441179577699 | |
Delivery point | Bristol and Bath Science Park, Dirac Crescent, Emersons Green, Bristol, BS16 7FR | |
City | Bristol | |
URL | www.marineturbines.com | |
Role | The originator is the person or organisation who created, collected or produced the resource. | originator |
Organisation name | EMU Limited - Head Office | |
Individual name | Adam Cross | |
Phone | +44 (0) 1489 860 050 | |
Fax | +44 (0) 1489 860 051 | |
Delivery point | 1 Mill Court, The Sawmills | |
Postal code | SO32 2EJ | |
City | Southampton | |
URL | www.emulimited.com | |
Resource locators | ||
Locator URL | Web address (URL) that links to the resource | https://www.marinedataexchange.co.uk/details/2007/summary |
Web address (URL) that links to the resource | https://www.marinedataexchange.co.uk | |
Dataset constraints | ||
20 Limitations on Public Access - Access constraints | ISO restriction code chosen from ISO 19115-1 Codelist | restricted |
20 Limitations on Public Access – Other constraints | Any restriction on the use of the resource such as the need to agree to certain licence conditions. | PROPRIETARY & CONFIDENTIAL INFORMATION. This document and the information set forth herein (the "information") are confidential and proprietary to Marine Current Turbines Ltd ("MCT"), constitute trade secrets and derive independent economic value, actual or potential, from not being generally known. In consideration of you receiving this document you agree (i) to keep the information secret, (ii) only to use the information for your owns needs to accomplish the task(s) agreed with MCT, (iii) not to disclose any part of the information to any third party and (iv) not to make copies or reproductions thereof by whatsoever means. |
21 Conditions for Access and Use - Use limitation | Any restrictions imposed on accessing the resource such as the need to agree to certain licence conditions. | http://www.marinedataexchange.co.uk/pages/terms-of-use.aspx |
21 Conditions for access and use – Use limitation | Any restrictions imposed on accessing the resource. | http://www.marinedataexchange.co.uk/pages/terms-of-use.aspx |
Version info | ||
Date of creation | The date that the resource was created. | 2009-04-16 |
Metadata date | The date when the content of this metadata record was last updated. | 2015-06-12 |
Metadata standard name | The name of the metadata standard used to create this metadata | MEDIN Discovery Profile |
Metadata standard version | The version of the MEDIN Discovery Metadata Standard used to create the metadata record | 2.3.8 |
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