Model Instance Title:
Holderness Variable Wave Coastal Erosion Model (Defensive)  
Model Instance Short Name:
Holderness - Defensive  
Description:
The impact of future sea-level rise on coastal erosion as a result of a changing climate has been studied in detail over the past decade. The potential impact of a changing wave climate on erosion rates, however, is not typically considered. We explore the effect of changing wave climates on a pinned, soft-cliff, sandy coastline, using as an example the Holderness coast of East Yorkshire, UK. The initial phase of the study concentrates on calibrating a numerical model to recently measured erosion rates for the Holderness coast using an ensemble of geomorphological and shoreface parameters under an observed offshore wave climate. In the main phase of the study, wave climate data are perturbed gradually to assess their impact on coastal morphology. Forward-modelled simulations constrain the nature of the morphological response of the coast to changes in wave climate over the next century. Results indicate that changes to erosion rates over the next century will be spatially and temporally heterogeneous, with a variability of up to ±25% in the erosion rate relative to projections under constant wave climate. The heterogeneity results from the current coastal morphology and the sediment transport dynamics consequent on differing wave climate regimes  
Creation/Publication Date:
2014  
Keywords:
Hazards Coasts   
Others Erosion  Defensive   
 
Disciplines:
COASTAL MODELLING   
Contact Details:
NameOrganisationCountryEmail
Andrew Barkwith   British Geological Survey   UK   andr3@bgs.ac.uk  
 
Model Code Name:
Time Interval Covered:
from: 01-Jan-2010   to: 31-Dec-2100
Spatial Extent:
Bounding Box (Lat/Long WGS84):
West: -0.659   East: 0.123   South: 53.71   North: 54.062  
Scope of Vertical Extent: Superficial  
Vertical Extent (metres above OD) Maximum: �   Minimum: �    
Spatial Reference Systems of Datasets:
Horizontal Reference System: WGS 84
Vertical Datum: mean sea level height
Vertical Units: metre
Grid Resolution:
Spacing XSpacing YSpacing ZCells XCells YCells Z
100   100     505   404    

Time step interval: day   Time step value: 1
Additional information (science questions addressed, assumptions etc.):
Boundary Condition   Periodic east and west and no-flow north and south  
Initial Condition   Gridded ASCII of percentage sand and percentage rock  
Initial Condition   Initial coastline position (based on Nextmap data)  
Science Question   How will sea walls impact erosion rates along the Holderness coastline over the next century under differing wave climates?  
 
Data:
Input Dataset NameVersionURL LinkParameterValueUnits
Common inputs to ensemble are captured in the file main.c          
Ensemble member specific inputs are captured in the folder Wave Climate Factors          
Offshore wave climate for the Hornsea wave buoy     http://www.channelcoast.org/data_management/real_time_data/charts/?chart=72      
Output Dataset NameVersionURL LinkParameterValueUnits
Gridded ASCII of percentage sand and percentage rock at 10 year (3650 day) intervals          
 
Documents and Published Papers available for this model instance:
AuthorsTitleDate
Barkwith, A.; Hurst, M.D.; Thomas, C.W.; Ellis, M.A.; Limber, P.L.; Murray, A.B.,   Coastal vulnerability of a pinned, soft-cliff coastline. Part II, assessing the influence of sea walls on future morphology   2014