Swansea Bay Tidal Lagoon Geophysical Investigation (February 2012) (3rd Party Data)

A hydrographic and geophysical survey of the proposed Swansea tidal lagoon in Swansea Bay was carried out by Titan Environmental Surveys Ltd in the winter of 2011/12. This included singlebeam echosounder, sidescan sonar, surface tow boomer and magnetometer surveys. All data were referenced to OSGB36 datum using OSTN02 datum transformation, and seabed bathymetry was reduced to chart datum using the UKHO Vertical Offshore reference frame (VORF) model. The dataset shows a gently sloping seabed of thin sand and gravels overlying a sequence of fine sediments of up to 20m thickness on top of boulder clay. An outcrop of boulder clay divides the site into E and W zones with featureless smooth sands in the E, and predominantly gravel in the W. No bedforms large enough to produce bathymetric features were identified. The purpose of this data capture was to carry out a hydrographic and geophysical survey of the proposed Swansea Tidal Lagoon site in Swansea Bay. Data provided to Countryside Council for Wales (CCW) for internal business use only - for consultation on the Swansea Bay Tidal lagoon casework . Data is considered confidential and may not be disseminated.

Identifier: EXT_DS115179

Alternative Title

Ymchwiliad geoffisegol i lagwn y llanw ym Mae Abertawe, Chwefror 2012

Metadata Language: English

Lineage: Survey carried out by Titan Environmental Surveys Ltd on commission from Inazin (formerly Low Carbon Tidal). Data and report provided to CCW by Titan, and marked as confidential. Odom Hydrotrac single beam echosounder at 200KHz and 16/sec sounding rate. Fully corrected using on board motion sensor and VORF models for tidal correction to chart datum. Sidescan sonar data captured using an Edgetech 4200-FS sidescan sonar, recording frequencies at 100 and 400 MHz simultaneously. See report for further information. Survey carried out by professional hydrographers. All data corrected and referenced to OSGB36 datum and chart datum for bathymetry using the UKHO Vertical Offshore Reference Frasme (VORF) model.

Dataset Reference Date (Publication): 2012-02-28

Owner

Titan Environmental Survey Ltd

Tital Environmental Surveys, Orion House, Waterton Industrial Estate, Bridgend, Mid Glamorgan, CF311 3XB, Wales

http://www.titansurveys.com/

Owner

INAZIN Power Ltd

Inazin Power Ltd, Swan Yard, 9-13 West Marke Place, Cirencester, GL7 2NH, England

http://www.inazin.com/

Originator

Titan Environmental Survey Ltd

Tital Environmental Surveys, Orion House, Waterton Industrial Estate, Bridgend, Mid Glamorgan, CF311 3XB, Wales

http://www.titansurveys.com/

Extent

Geographic Extent: Irish Sea

Geographic Extent: Swansea Bay

Geographic Extent: Carmarthen Bay

Map representing the geographic extent of the dataset

Vertical Extent

Medin Extent Keyword: benthic boundary layer

Vertical Extent

Minimum value (metres): -5.6

Maximum value (metres): -9

Vertical CRS

Format Type and Description

Image ()

Specification

Geotiff image Bathymetry .xyz file Sidescan sonar .xtf .jsf Report .pdf .dwg CAD files of interpreted features from SSS, also CAD bathymetry layer. Geophysical data (boomer, magnetometer) data not supplied.

Data quality

Quality Scope: Dataset

Conformity: Commission Regulation (EU) No 1089/2010 of 23 November 2010 implementing Directive 2007/2/EC of the European Parliament and of the Council as regards interoperability of spatial data sets and services
Explanation
Degree: false

Lineage: Survey carried out by Titan Environmental Surveys Ltd on commission from Inazin (formerly Low Carbon Tidal). Data and report provided to CCW by Titan, and marked as confidential. Odom Hydrotrac single beam echosounder at 200KHz and 16/sec sounding rate. Fully corrected using on board motion sensor and VORF models for tidal correction to chart datum. Sidescan sonar data captured using an Edgetech 4200-FS sidescan sonar, recording frequencies at 100 and 400 MHz simultaneously. See report for further information. Survey carried out by professional hydrographers. All data corrected and referenced to OSGB36 datum and chart datum for bathymetry using the UKHO Vertical Offshore Reference Frasme (VORF) model.

Keywords

GEMET - INSPIRE themes, version 1.0

Hydrography

Type: Theme

Citation

Date (Publication): 2008-06-01

Code: geonetwork.thesaurus.external.theme.httpinspireeceuropaeutheme-theme

Keywords

NRW Thesaurus

geophysical surveys
single beam echosounder
3rd Party Data
Third Party Data

Type: Theme

Citation

Date (Publication): 2023-12-31

Code: geonetwork.thesaurus.local.theme.converted_nrw-keywords

Keywords

SeaDataNet Parameter Discovery Vocabulary

Side-scan sonar

Type: Theme

Citation

Date (Revision): 2021-01-06

Code: geonetwork.thesaurus.external.theme.rdf+xml

Code: British National Grid (EPSG::27700)

Content Information

NRW Profile

Custom Elements

Constraints

Limitations on Public Access and Use

Restriction type: Other restrictions

Access Constraints Directive

Limitations: no limitations

Access Constraints Text

Other constraints: This dataset is wholly owned by Titan Environmental Surveys Ltd. Data was provided to NRW for internal business use only and for consultation on the Swansea Bay Tidal lagoon casework. Data is considered confidential and may not be disseminated.

Use Constraints

Use constraints type: Other restrictions

Other constraints: © Titan Environmental Surveys Ltd, 2012. NRW cannot disseminate this data. Those seeking the data such permission should approach the originator directly.

Metadata

File Identifier: 4f4c4942-4343-5764-6473-313135313739 XML

Metadata Language: English

Parent Identifier: Multibeam Acoustic Data Index
NRW_DS121633

Resource type: Dataset

Metadata Date: 2024-05-30T15:37:47.919Z

Metadata Standard Name: NRW

Metadata Standard Version: 1.0

pointOfContact

Natural Resources Wales (NRW)

Maes-y-Ffynnon, Penrhosgarnedd, Bangor, Gwynedd, LL57 2DW, Wales

http://naturalresources.wales/?lang=en

Publishing Body

Access the portal

Full access to the portal and metadata.

Swansea Bay Tidal Lagoon Geophysical Investigation (February 2012) (3rd Party Data)

Identification

Extent

Extent

Vertical Extent

Vertical Extent

Distribution

Quality

Data quality

Keywords

Keywords

Citation

Keywords

Citation

Keywords

Citation

Spatial Reference System

Content

Content Information

NRW Profile

Custom Elements

Constraints

Constraints

Limitations on Public Access and Use

Access Constraints Directive

Access Constraints Text

Use Constraints

Metadata

Metadata

Publishing Body