Open Daily: 10am - 10pm | Alley door pickup 10am - 7pm 3038 Hennepin Ave Minneapolis, MN
612-822-4611

  • Open Daily: 10am - 10pm
    Alley-side Pickup: 10am - 7pm

    3038 Hennepin Ave Minneapolis, MN
    612-822-4611

Open Daily: 10am - 10pm | Alley-side Pickup: 10am - 7pm
3038 Hennepin Ave Minneapolis, MN
612-822-4611
Diffusion-based flood inundation modelling

Diffusion-based flood inundation modelling

Yu, Dapeng

Paperback

Geography

ISBN10: 3639242432
ISBN13: 9783639242430
Publisher: Blues Kids Of Amer
Published: Mar 24 2010
Pages: 240
Weight: 0.79
Height: 0.55 Width: 6.00 Depth: 9.00
Language: English
This study describes the development and application of a 2D raster-based diffusion wave model (FloodMap), either loosely-coupled or tightly-coupled to a 1D river flow model, to determine patterns of fluvial flood inundation in urban areas using high-resolution topographic data. Applications of the basic model showed that even relatively small changes in model resolution have considerable effects on the predicted inundation extent and timing of flood inundation. Timing sensitivity would be expected given the relatively poor representation of inertial processes in a diffusion wave model. A sub grid scale wetting and drying correction approach was developed and tested for use with the basic model. The method recognises explicitly that representations of sub grid scale topography using roughness parameters will provide an inadequate representation of the effects of structural elements on the floodplain as such elements not only act as momentum sinks, but also have mass blockage effects. This approach is found to give significantly better prediction of fluvial flood inundation in urban areas as compared with traditional calibration of sub grid-scale effects using roughness parameter.

Also in

Geography

View All