Modelling high resolution discharge dynamics nearby road structure, using data from small catchment and 3 different models

• The climate change may lead to an increase in the frequency of extreme precipitation events and floods as well as changes in frost/thawing cycles. This will have impacts on the performance and life time of road infrastructures. The frequency of road closures and other incidences will probably increase.This paper is based on an ongoing collaboration with ClimRunoff project financed by the Norwegian Research Council. The results from this cooperation will be used in the research project financed by the Swedish Road Administration.This study has started with the focus on quantifying discharge of catchment areas draining towards roads. The first priority of this study is to create a model that can evaluate the run-off situations under spring situation (i.e. overland flow due to snowmelt and partially frozen soils). This modeling study has just been carried out for a small agricultural catchment in Norway using 3 different models (MIKE SHE, LISEM and CoupModel). This study aims at:• Evaluation of suitable hydrological models to quantify the spring discharge• Identification of problems with available data and models to quantify the role of climate impacts• Identifying the specific role of groundwater and surface runoff to the discharge dynamicsThe models evaluated differ with respect to aggregation level (time and space) and representation of the hydrological processes. Especially winter related processes as snow accumulation, melt and infiltration into partially frozen soils are discussed.

Ämnesord

TEKNIK OCH TEKNOLOGIER  -- Samhällsbyggnadsteknik -- Vattenteknik (hsv//swe)

ENGINEERING AND TECHNOLOGY  -- Civil Engineering -- Water Engineering (hsv//eng)

Nyckelord

climate change

road infrastructure

events

floods

MIKE SHE

Norwegian Council

Swedish Road administration

Publikations- och innehållstyp

vet (ämneskategori)

kon (ämneskategori)