Environmental Engineering Reference
In-Depth Information
acknowledged. This research would not be possi-
ble without the continuing support, assistance
and encouragement of the Pontbren farm cooper-
ative and Coed Cymru.
catchment-scale model. Hence simulations have
been used to quantify effects of a range of land
management interventions (with uncertainty) for
both frequent and rare flood events.
Pontbren results are site-specific, and much
work is required to provide a more general meth-
odology for national application. First steps
towards this are presented. Detailed physics-
based models of the peat provide insight into the
effects of local management interventions (such
as grips and grip-blocking), but there is a lack of
local data to constrain parameterizations. Work
isongoingtoassimilatedatafrommoreinten-
sivelymonitored sites. The resulting uncertainty
has yet to be quantified, but this work will ad-
dress an important research question, namely the
role of physics-based models in data-scarce
situations.
Regionalization of results must depend on na-
tionally available data, and the use of the HOST
soil classification has been investigated. Use of a
Base Flow Index based on HOST has proved a
powerful tool to constrain model parameteriza-
tions, and potentially provides a connection to
thework of O'Connell et al. (2004). If, for example,
soil degradation can be represented as a change in
HOST class, a direct connection can be made to
the parameterization of catchment-scale models.
However, more work is needed to explore the role
of physics-based models in providing information
to support the definition of appropriate changes to
the regionalized parameters.
Finally, we note that current research links the
above with work at the University of Newcastle
upon Tyne into information-tracking algorithms
(see Chapter 0
),
and this then provides a powerful
methodology not only to predict catchment-scale
changes, but also to analyse the local sensitivity to
management interventions.
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Acknowledgements
The financial support of the EPSRC Flood Risk
Management Research Consortium, the NERC
Flood Risk from Extreme Events (FREE) Thematic
Programme, and the Forestry Commission is
