Morphodynamic Modelled Outputs for the Mawddach Estuary
This report summarises the third stage of a modelling research study undertaken by Bangor University, investigating the hydrodynamic and morphodynamic response of representative Welsh estuaries (which include both past and potential future changes to the estuaries, as well as their present form) to a range of mean and extreme climatic conditions. In particular, coastal flood risk and potential for erosion and accretion has been assessed through the medium of high resolution computational models. The Mawddach estuary lies within the Snowdonia National Park, north Wales, and its landscape and environment represents one of the key natural assets which Wales possesses. The purpose of this data capture was 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 such as embankment re-alignment and re-location.
- Identification
- Extent
- Distribution
- Quality
- Keywords
- Spatial Reference System
- Content
- Constraints
- Maintenance
- Metadata
Identification
- Identifier
- NRW_DS114564
- Alternative Title
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- Canlyniadau ar sail model morffodynamig ar gyfer Aber Mawddach
- Development of a morphodynamic model of the Mawddach Estuary to inform future management decisions
- Metadata Language
- English
- Lineage
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A mathematical model of the Mawddach Estuary has been developed to reproduce the interactions of tidal and fresh water hydrodynamics 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. Three grids have been produced against which different scenarios can be modelled. 1) 2-D model of the present day Mawddach Estuary 2) Alterations to represent the past and future 3) Alterations to remove the embankments upstream of Penmaenpool The project extends two previous modelling studies in other representative Welsh estuaries, namely the Dyfi Estuary in mid Wales (Robins, 2009a) and the Burry Inlet in south Wales (Robins, 2009b).
- Dataset Reference Date (Publication)
- 2011-06-30
Temporal Extent
- Begin date
- 1977-01-01
- End date
- 2010-12-31
- Topic category
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- Elevation
Extent
Extent
- Geographic Extent
- GWYNEDD - GWYNEDD
))
Vertical Extent
- Medin Extent Keyword
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water column
Vertical Extent
- Minimum value (metres)
- 10
- Maximum value (metres)
- -20
- Vertical CRS
Distribution
- Format Type and Description
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Documents
Documents
()
- Specification
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[A] Report in word and pdf format. [B] Modelled output grid files in .r2d format
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Documents
Documents
()
Quality
Data quality
- Quality Scope
- Dataset
- Lineage
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A mathematical model of the Mawddach Estuary has been developed to reproduce the interactions of tidal and fresh water hydrodynamics 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. Three grids have been produced against which different scenarios can be modelled. 1) 2-D model of the present day Mawddach Estuary 2) Alterations to represent the past and future 3) Alterations to remove the embankments upstream of Penmaenpool The project extends two previous modelling studies in other representative Welsh estuaries, namely the Dyfi Estuary in mid Wales (Robins, 2009a) and the Burry Inlet in south Wales (Robins, 2009b).
Keywords
Keywords
- Type
- Theme
Citation
- Date (Publication)
- 2008-06-01
Keywords
- NRW Thesaurus
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- modelling
- Mawddach Estuary
- morphodynamics
- TELEMAC
- Type
- Theme
Citation
- Date (Publication)
- 2023-12-31
Keywords
- SeaDataNet Parameter Discovery Vocabulary
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- Coastal geomorphology
- Bathymetry and Elevation
- Type
- Theme
Citation
- Date (Revision)
- 2021-01-06
Spatial Reference System
Content
Content Information
NRW Profile
Custom Elements
Constraints
Constraints
Limitations on Public Access and Use
- Restriction type
- Other restrictions
Access Constraints Directive
- Limitations
- no limitations
Access Constraints Text
- Other constraints
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This data is jointly owned by NRW and the Centre for Applied Marine 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
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© 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.
Metadata
Metadata
- File Identifier
- 4f4c4942-4343-5764-6473-313134353634 XML
- Metadata Language
- English
- Resource type
- Dataset
- Metadata Date
- 2024-05-31T09:11:43.668Z
- Metadata Standard Name
- NRW
- Metadata Standard Version
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1.0