Morphodynamic Modelled Outputs for the Dyfi Estuary

A 4-month study, conducted by Bangor University for the Countryside Council for Wales (CCW), to develop a high-resolution morphodynamic model of the Dyfi Estuary and surrounding area. The purpose of this data capture was to collect data for modelling used to investigate the response of the estuary to future tidal and atmospheric changes. The model has also been used to investigate the response of the estuarine dynamics to potential management strategies. The work leads on from a previous study which developed an initial version of the Dyfi Model (Robins 2009, hereafter denoted the 2009 Dyfi Model). It was possible to improve the model resolution due to ever-increasing computer capabilities and data storage at Bangor University. There is a need for this Dyfi Estuary study to keep track with technological advances in modelling and to improve the accuracy of the simulations, broadening the possible applications of the model to coastal processes and coastal management scenarios. Further information can be found in CCW Contract science report 1033.

Identifier: NRW_DS115311

Alternative Title

Development of a morphodynamic model of the Dyfi Estuary to inform future management decisions: Model update and further validation

Metadata Language: English

Lineage: A mathematical model of the Dyfi Estuary has been developed to reproduce the interactions of tidal and fresh water hydrodynamics and sediment transport within the estuary and surrounding low lying areas. The model is based on a TELEMAC Modelling System which calculates the temporal and spatial variations in hydrodynamics (e.g. elevations, velocities, pressure, density) and sediment transport through a finite-element model grid (an unstructured mesh of nodes connected in a triangular framework) which represents the bathymetry of the area. Input data to the model includes bathymetric data from Admiralty charts and LIDAR data, tidal prediction of sea surface heights, and river flowrate data. Simulations of present-day mean/extreme and future climatic projections have been produced. The project extends three previous modelling studies in other representative Welsh estuaries, namely the Dyfi Estuary, the Burry Inlet, and the Mawddach Estuary (see CCW Science Reports 898a, 898b and 898c).

Additional Information: Robins, P.E. 2013. Development of a morphodynamic model of the Dyfi Estuary to inform future management decisions: Model update and further validation. CCW Science Report No: 1033, 50 pp., Countryside Council for Wales, Bangor.

Dataset Reference Date (Publication): 2013-06-10

Temporal Extent

Begin date: 1977-01-01

End date: 2013-06-10

Topic category

Elevation

Owner

Natural Resources Wales (NRW)

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

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

Owner

Centre for Applied Marine Sciences (CAMS)

Centre for Applied Marine Sciences, Marine Science Laboratories, Bangor University, Menai Bridge, Ynys Mon, LL59 5AB

http://www.cams.bangor.ac.uk/

Originator

Centre for Applied Marine Sciences (CAMS)

Centre for Applied Marine Sciences, Marine Science Laboratories, Bangor University, Menai Bridge, Ynys Mon, LL59 5AB

http://www.cams.bangor.ac.uk/

Extent

Geographic Extent: SIR CEREDIGION - CEREDIGION

Geographic Extent: GWYNEDD - GWYNEDD

Map representing the geographic extent of the dataset

Vertical Extent

Medin Extent Keyword: soil and sediment

Vertical Extent

Minimum value (metres): 10

Maximum value (metres): -20

Vertical CRS

Distribution

Format Type and Description

Documents ( )

Specification

[A] The final report in Microsoft Word and Adobe PDF formats.
Delimited ( )

Specification

[B] Modelled output grid files in .r2d format

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: A mathematical model of the Dyfi Estuary has been developed to reproduce the interactions of tidal and fresh water hydrodynamics and sediment transport within the estuary and surrounding low lying areas. The model is based on a TELEMAC Modelling System which calculates the temporal and spatial variations in hydrodynamics (e.g. elevations, velocities, pressure, density) and sediment transport through a finite-element model grid (an unstructured mesh of nodes connected in a triangular framework) which represents the bathymetry of the area. Input data to the model includes bathymetric data from Admiralty charts and LIDAR data, tidal prediction of sea surface heights, and river flowrate data. Simulations of present-day mean/extreme and future climatic projections have been produced. The project extends three previous modelling studies in other representative Welsh estuaries, namely the Dyfi Estuary, the Burry Inlet, and the Mawddach Estuary (see CCW Science Reports 898a, 898b and 898c).

Keywords

GEMET - INSPIRE themes, version 1.0

Type: Theme

Citation

Date (Publication): 2008-06-01

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

Keywords

NRW Thesaurus

environmental modelling
morphodynamics
TELEMAC
Dyfi Estuary

Type: Theme

Citation

Date (Publication): 2024-06-19

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

Keywords

SeaDataNet Parameter Discovery Vocabulary

Coastal geomorphology

Type: Theme

Citation

Date (Publication): 2024-06-19

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

Code: Latitude and Longitude (EPSG::4326)

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 data is jointly owned by Natural Resources Wales (NRW) and Centre for Applied Sciences (CAMS). There are no access restrictions to this data. NRW may release, publish or disseminate it freely.

Use Constraints

Use constraints type: Other restrictions

Other constraints: © CNC/NRW and CAMS 2011. There are no use restrictions on this data. Recipients may re-use, reproduce, disseminate this data free of charge in any format or medium, provided they do so accurately, acknowledging both the source and the copyright of NRW/CAMS and do not use it in a misleading context. It is the recipient's responsibility to ensure the data is fit for the intended purpose, that dissemination or publishing does not result in duplication and that it is fairly interpreted. Advice on interpretation should be sought where required. To avoid re-using old data, users should periodically obtain the latest version from the original source.

Attribution Statement

Other constraints: Contains Natural Resources Wales information © Natural Resources Wales and Database Right. All rights Reserved. Contains Centre for Applied Sciences information © CAMS and Database Right. All rights Reserved.

Metadata

File Identifier: 4f4c4942-4343-5764-6473-313135333131 XML

Metadata Language: English

Resource type: Dataset

Metadata Date: 2025-01-02T15:57:53.359Z

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.

Morphodynamic Modelled Outputs for the Dyfi Estuary

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Extent

Vertical Extent

Vertical Extent

Distribution

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

Attribution Statement

Metadata

Metadata

Publishing Body