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Metadata: 2007, RPS, Lynn and Inner Dowsing, Marine Mammal Observer and PAM Monitoring
Abstract:
Construction phase of the Centrica Renewable Energy Ltd’s (CREL) Inner Dowsing and Lynn offshore wind farms began in April 2007. As underwater noise generated during construction of wind farms - principally through pile driving - has previously been shown to be of physical risk to marine mammals in close proximity, and the area is known to be utilised by marine mammals, Natural England and DEFRA requested a procedure of mitigation measures against this potential damage. The basic principle of the MMMP was to ensure that no marine mammals were within 500 metres of the pile during the 30 minute period preceding the start of piling. To confirm their absence two marine mammal observers (MMOs), one of whom operated a passive acoustic monitoring (PAM) system, were to be stationed onboard a crew boat prior to all pile-driving operations. By conducting radial transect surveys around the point of piling the MMO’s could ensure that piling would not commence should marine mammals be detected in the 500 metres exclusion zone in the critical pre-piling period. In addition, a soft start was to be implemented for all piling events.
Data holder:
The Crown Estate
| Other details | ||
| Internal code | Internally assigned metadata identifier | 28070 |
| 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. | 2007, RPS, Lynn and Inner Dowsing, Marine Mammal Observer and PAM Monitoring |
| Alternative title | The purpose of alternative title is to record any additional names by which the dataset may be known. | Marine Mammal Monitoring |
| 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. | d5ce8848-5550-42c3-8693-84fef75f7329 |
| Resource Identifier | This is the code assigned by the data owner. | TCE-1095 |
| 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 | 2007-04-21 |
| End date | This describes the date the resource ends. This may only be the year if month and day are not known | 2007-11-25 |
| 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. | Construction phase of the Centrica Renewable Energy Ltd’s (CREL) Inner Dowsing and Lynn offshore wind farms began in April 2007. As underwater noise generated during construction of wind farms - principally through pile driving - has previously been shown to be of physical risk to marine mammals in close proximity, and the area is known to be utilised by marine mammals, Natural England and DEFRA requested a procedure of mitigation measures against this potential damage. The basic principle of the MMMP was to ensure that no marine mammals were within 500 metres of the pile during the 30 minute period preceding the start of piling. To confirm their absence two marine mammal observers (MMOs), one of whom operated a passive acoustic monitoring (PAM) system, were to be stationed onboard a crew boat prior to all pile-driving operations. By conducting radial transect surveys around the point of piling the MMO’s could ensure that piling would not commence should marine mammals be detected in the 500 metres exclusion zone in the critical pre-piling period. In addition, a soft start was to be implemented for all piling events. |
| Lineage | Lineage includes the background information, history of the sources of data, data quality statements and methods. | The vessel used for the majority of marine mammal surveys, between 21/04/2007 and 12/11/2007, was the MV Sirocco. When this vessel was released from charter, the Windcat 7 was made available for remaining marine mammal monitoring. Both visual and acoustic methods were used to detect the presence of marine mammals in the vicinity of the pile. A team of two experienced marine mammal observers (MMOs) was present during the pile-driving operations, one of whom also operated a passive acoustic monitoring system (PAM). Visual observations were carried out prior to and during the pile-driving operations using the naked eye and binoculars. The PAM system was used to detect marine mammal vocalisations and its output was monitored by the PAM operator prior to the commencement of piling operations. Provided weather conditions and light levels allowed, visual and acoustic mitigation surveys were carried out prior to each pile-driving event. Had the weather or site conditions not permitted the survey vessel to transit to the site, the Fisheries Liaison Officer (FLO) on board the Resolution was responsible for undertaking visual MMO duties. In the event of pile driving commencing at night, only acoustic mitigation surveys were conducted. |
| Related keywords | ||
| Keyword | General subject area(s) associated with the resource, uses multiple controlled vocabularies | Acoustic noise in the water column |
| General subject area(s) associated with the resource, uses multiple controlled vocabularies | Cetacean abundance | |
| General subject area(s) associated with the resource, uses multiple controlled vocabularies | 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 | Species distribution | |
| Geographical coverage | ||
| North | The northern-most limit of the data resource in decimal degrees | 53.213957312194 |
| East | The eastern-most limit of the data resource in decimal degrees | 0.49066878909487 |
| South | The southern-most limit of the data resource in decimal degrees | 53.123513905485 |
| West | The western-most limit of the data resource in decimal degrees | 0.42957461203709 |
| 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 | RPS Energy, | |
| Position name | Project Manager | |
| rpsenergy@rpsgroup.com | ||
| 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-1095/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 |