dc.contributor.author |
Marechal, David |
- |
dc.contributor.author |
Holman, Ian P. |
- |
dc.date.accessioned |
2012-05-31T23:07:46Z |
|
dc.date.available |
2012-05-31T23:07:46Z |
|
dc.date.issued |
2005-10-01T00:00:00Z |
- |
dc.identifier.citation |
D. Marechal and I.P. Holman, Development and application of a soil
classification-based conceptual catchment-scale hydrological model, Journal of
Hydrology, Vol 312, Iss 1-4, 10 Oct 2005, Pages 277-293 |
- |
dc.identifier.issn |
0022-1694 |
- |
dc.identifier.uri |
http://dx.doi.org/10.1016/j.jhydrol.2005.02.018 |
- |
dc.identifier.uri |
http://dspace.lib.cranfield.ac.uk/handle/1826/1928 |
|
dc.description.abstract |
A conceptual, continuous, daily, semi distributed catchment-scale rainfall-
runoff model that has the potential to be ultimately used in ungauged catchments
is described. The Catchment Resources and Soil Hydrology (CRASH) model is
developed from the basis that the transformation of rainfall into simulated
river discharge can be parameterised using pre-existing national datasets of
soil, land use and weather; and that the spatial variability in soil properties
and land use are important to the hydrological response of a catchment and
should be incorporated into the catchment representation. Both infiltration-
excess and saturation-excess runoff mechanisms are simulated, with water
movement through each soil layer simulated using a capacitance approach limited
according to layer physical properties. The hydrological linkage between the
response unit and catchment is parameterised using the existing national
Hydrology of Soil Types (HOST) classification. The HOST classification groups
all UK soil types into one of 29 hydrological classes for which nationally
calibrated values of Base Flow Index and Standard Percentage Runoff are
provided. CRASH has been calibrated and validated for three catchments in
England with contrasting soil characteristics and meteorological conditions. The
model was successful at simulating time series and flow duration curves in all
catchments during the calibration and validation periods. The next development
stage will be to test CRASH for a large number of catchments covering a wider
range of soils, land uses and meteorological conditions, in order to derive a
set of regionalised model parameters based upon the HOST classification. The
successful cross-scale linkage between water movement through the response unit
and the catchment-scale hydrological response using the HOST classification,
which incorporates the scale effects between plot and catchment, suggests that
such national soil hydrological classifications may provide a sound and
consistent framework for hydrological modelling in both gauged and ungauged
catchments which should be extended to other regions. |
en_UK |
dc.language.iso |
en_UK |
- |
dc.publisher |
Elsevier Science B.V., Amsterdam. |
en_UK |
dc.subject |
Rainfall-runoff model |
en_UK |
dc.subject |
Conceptual model |
en_UK |
dc.subject |
Classification |
en_UK |
dc.subject |
Ungauged catchment |
en_UK |
dc.subject |
Semi-distributed model |
en_UK |
dc.subject |
Soil hydrology |
en_UK |
dc.title |
Development and application of a soil classification-based conceptual catchment-
scale hydrological model |
en_UK |
dc.type |
Article |
- |