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:
| Name | Organisation | Country | Email |
|
Andrew Barkwith
|
British Geological Survey
|
UK
|
andr3@bgs.ac.uk
|
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 X | Spacing Y | Spacing Z | Cells X | Cells Y | Cells Z |
|
100
|
100
|
|
505
|
404
|
|
Time step interval:
day
Time step value:
1
Additional information (science questions addressed, assumptions etc.):
|
Science Question
|
How will sea walls impact erosion rates along the Holderness coastline over the next century under differing wave climates?
|
|
Boundary Condition
|
Periodic east and west and no-flow north and south
|
|
Initial Condition
|
Initial coastline position (based on Nextmap data)
|
|
Initial Condition
|
Gridded ASCII of percentage sand and percentage rock
|
Data:
| Output Dataset Name | Version | URL Link | Parameter | Value | Units |
|
Gridded ASCII of percentage sand and percentage rock at 10 year (3650 day) intervals
|
|
|
| | |
Documents and Published Papers available for this model instance: