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Metadata: 2006-2012 Internal Waves Density and Seabed Impact Maps of UK continental shelf
Abstract:
Satellite remote sensing using a synthetic aperture radar (SAR) sensor can deliver thousands of measurements of sea surface roughness and provide systematic observations of internal wave (IW) features over many years. We processed ENVISAT ASAR sensor data acquired in 2006-2012 by the European Space Agency, to build detailed maps of internal wave occurrence and climatology for the UKCS. Up to a hundred SAR scenes per month covered the region of interest, over 3,400 in total, a volume of data that cannot be processed manually. We developed a new methodology for automated processing of satellite images, detection of IW features and combining the processed scenes into monthly composites and climatologies of IW occurrence. These IW occurrence maps have been applied to estimate the impact of IWs on the seabed in the UKCS. Regions with high likelihood of seabed disturbance were identified by combining the mixed layer depth, bathymetry and IW occurrence data. Monthly and annual climatology maps of the UKCS have been produced showing the spatial and temporal variability of high and low impact regions.
Data holder:
Plymouth Marine Laboratory (PML)
Use constraints:
No restrictions to public access
| Other details | ||
| Internal code | Internally assigned metadata identifier | 1455 |
| 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. | 2006-2012 Internal Waves Density and Seabed Impact Maps of UK continental shelf |
| 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. | 60d05e0ef4f8029cf4ea9ff7cdbc9e4d |
| Resource Identifier | This is the code assigned by the data owner. | OESEA-17-73PMA187 |
| 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. | dataset |
| Start date | This describes the date the resource starts. This may only be the year if month and day are not known | 2006-10-01 |
| End date | This describes the date the resource ends. This may only be the year if month and day are not known | 2012-04-30 |
| Spatial resolution | This describes the spatial resolution of the dataset or the spatial limitations of the service. | 2600 |
| Spatial resolution unit | This describes the unit of spatial resolution which for distance must be metres. | http://standards.iso.org/ittf/PubliclyAvailableStandards/ISO_19139_Schemas/resources/uom/gmxUom.xml#m |
| 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. | Satellite remote sensing using a synthetic aperture radar (SAR) sensor can deliver thousands of measurements of sea surface roughness and provide systematic observations of internal wave (IW) features over many years. We processed ENVISAT ASAR sensor data acquired in 2006-2012 by the European Space Agency, to build detailed maps of internal wave occurrence and climatology for the UKCS. Up to a hundred SAR scenes per month covered the region of interest, over 3,400 in total, a volume of data that cannot be processed manually. We developed a new methodology for automated processing of satellite images, detection of IW features and combining the processed scenes into monthly composites and climatologies of IW occurrence. These IW occurrence maps have been applied to estimate the impact of IWs on the seabed in the UKCS. Regions with high likelihood of seabed disturbance were identified by combining the mixed layer depth, bathymetry and IW occurrence data. Monthly and annual climatology maps of the UKCS have been produced showing the spatial and temporal variability of high and low impact regions. |
| Lineage | Lineage includes the background information, history of the sources of data, data quality statements and methods. | The observational frequency maps of IW were generated by automatic processing of the ENVISAT ASAR data archive covering the period from 2006 to 2012. The IW frequency maps were combined with the bathymetry and MLD modelling data to estimate the impact of IWs on the seabed. The results are presented in monthly, seasonal, annual and climatology maps in three amplitude categories. The maps are presented in GeoTIFF and NetCDF formats for GIS users, and in PNG format for the users who do not have access to a GIS. The maps are given in low spatial resolution (10x10min per pixel) as well as in medium resolution (2.5x2.5min per pixel). Each of the "lowres" and "medres" directories contain "amp015", "amp050" and "amp100" subdirectories that store the data for IW amplitudes 15, 50 and 100 meters respectively. The files in GeoTIFF and NetCDF formats store the 2D maps as variables: "occurrence" - estimate of IW occurrence; "seabed_impact" - estimate of the interaction of IWs on the seabed; "pixels" - number of independent sensor measurements; "waves" - number of sensor measurements detected as IWs; "scenes" - number of scenes processed. |
| Additional information | This describes relevant references to the data e.g. reports, articles, websites plus other useful information not captured elsewhere. | A. Kurekin, P. Land and P. Miller, 2017. Remote sensing for estimating impact of internal waves on the seabed. Phase 2: Implementation. Report on research project for Hartley Anderson Consulting and the UK Department for Business Energy and Industrial Strategy (BEIS). |
| Related keywords | ||
| Keyword | General subject area(s) associated with the resource, uses multiple controlled vocabularies | Marine Environmental Data and Information Network |
| General subject area(s) associated with the resource, uses multiple controlled vocabularies | Atmospheric conditions | |
| General subject area(s) associated with the resource, uses multiple controlled vocabularies | Radar backscatter | |
| General subject area(s) associated with the resource, uses multiple controlled vocabularies | Internal waves | |
| General subject area(s) associated with the resource, uses multiple controlled vocabularies | Seabed Impact | |
| General subject area(s) associated with the resource, uses multiple controlled vocabularies | Sediment resuspension | |
| General subject area(s) associated with the resource, uses multiple controlled vocabularies | Sea surface roughnes | |
| Geographical coverage | ||
| North | The northern-most limit of the data resource in decimal degrees | 65.0042 |
| East | The eastern-most limit of the data resource in decimal degrees | 3.9625 |
| South | The southern-most limit of the data resource in decimal degrees | 48.0458 |
| West | The western-most limit of the data resource in decimal degrees | -24.9958 |
| Regional sea | Eastern Channel | |
| Western Channel and Celtic Sea | ||
| Irish Sea | ||
| Southern North Sea | ||
| Northern North Sea | ||
| Minches & Western Scotland | ||
| Scottish Continental Shelf | ||
| Rockall Trough & Bank | ||
| Faroe-Shetland Channel | ||
| Atlantic North West Approaches | ||
| 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 | Plymouth Marine Laboratory (PML) | |
| Individual name | Andriy Kurekin | |
| Position name | Atmospheric Physicist and Remote Sensing S | |
| Phone | +44 (0)1752 633 100 | |
| Fax | +44 (0)1752 633101 | |
| Delivery point | Prospect Place The Hoe, Prospect Place The Hoe, Prospect Place The Hoe | |
| Postal code | PL1 3DH | |
| City | Plymouth | |
| anku@pml.ac.uk | ||
| Role | The distributor is the person or organisation that distributes the resource. | distributor |
| Organisation name | Plymouth Marine Laboratory (PML) | |
| Individual name | Andriy Kurekin | |
| Phone | +44 (0)1752 633 100 | |
| Fax | +44 (0)1752 633101 | |
| Delivery point | Prospect Place The Hoe | |
| Postal code | PL1 3DH | |
| City | Plymouth | |
| anku@pml.ac.uk | ||
| Role | The originator is the person or organisation who created, collected or produced the resource. | originator |
| Organisation name | Plymouth Marine Laboratory (PML) | |
| Individual name | Andriy Kurekin | |
| Phone | +44 (0)1752 633 100 | |
| Fax | +44 (0)1752 633101 | |
| Delivery point | Prospect Place The Hoe | |
| Postal code | PL1 3DH | |
| City | Plymouth | |
| anku@pml.ac.uk | ||
| Role | The originator is the person or organisation who created, collected or produced the resource. | originator |
| Organisation name | Plymouth Marine Laboratory (PML) | |
| Individual name | Peter Land | |
| Position name | Atmospheric Physicist and Remote Sensing S | |
| Phone | +44 (0)1752 633 100 | |
| Fax | +44 (0)1752 633101 | |
| Delivery point | Prospect Place The Hoe | |
| Postal code | PL1 3DH | |
| City | Plymouth | |
| peland@pml.ac.uk | ||
| Role | The originator is the person or organisation who created, collected or produced the resource. | originator |
| Organisation name | Plymouth Marine Laboratory (PML) | |
| Individual name | Peter Miller | |
| Position name | Senior Earth Observation Scientist | |
| Phone | +44 (0)1752 633 100 | |
| Fax | +44 (0)1752 633101 | |
| Delivery point | Prospect Place The Hoe | |
| Postal code | PL1 3DH | |
| City | Plymouth | |
| pim@pml.ac.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 | Plymouth Marine Laboratory (PML) | |
| Individual name | Andriy Kurekin | |
| Phone | +44 (0)1752 633 100 | |
| Fax | +44 (0)1752 633101 | |
| Delivery point | Prospect Place The Hoe | |
| Postal code | PL1 3DH | |
| City | Plymouth | |
| anku@pml.ac.uk | ||
| Resource locators | ||
| Locator URL | Web address (URL) that links to the resource | http://catalogue.ceda.ac.uk/uuid/d920cb54fe694711b59379f2b1b1f569 |
| Locator name | Name of the web resource | Access to dataset archived at Centre for Environmental Data Analysis (CEDA) |
| Dataset constraints | ||
| 20 Limitations on Public Access - Access constraints | otherRestrictions | |
| 20 Limitations on Public Access - Other constraints | This states any limitations on access to the data and uses free text. | No restrictions to public access |
| 21 Conditions for Access and Use - Use limitation | 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 is freely available for research or commercial use providing that the originators are acknowledged in any publications produced. |
| 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. | 2017-10-31 |
| Date of creation | The date that the resource was created. | 2017-09-30 |
| Harvest date | The date which this record has been (re)harvested from the provider. | 2026-04-12 |
| Metadata date | The date when the content of this metadata record was last updated. | 2017-12-07 |
| Metadata standard name | The name of the metadata standard used to create this metadata | MEDIN Discovery metadata standard |
| Metadata standard version | The version of the MEDIN Discovery Metadata Standard used to create the metadata record | 2.3.8 |