000004732 001__ 4732
000004732 005__ 20141119144548.0
000004732 04107 $$aeng
000004732 046__ $$k2002-06-02
000004732 100__ $$aNyander, Annie
000004732 24500 $$aRIVER BED SURFACE ROUGHNESS ANALYSIS USING 2-D WAVELET TRANSFORM-BASED METHODS

000004732 24630 $$n15.$$pProceedings of the 15th ASCE Engineering Mechanics Division Conference
000004732 260__ $$bColumbia University in the City of New York
000004732 506__ $$arestricted
000004732 520__ $$2eng$$aThis paper describes the analysis of river bed sediment surface data using the two-dimensional discrete wavelet transform. When sedimentation occurs in a channel the topography of the bed surface will change which in turn will affect the flow characteristics. It is therefore important to be able to characterise the bedsurface topography. In this study the sediment surface data was analysed using the wavelet transform - a relatively new mathematical tool for data analysis. Interest in this analysis method has increased during recent years, and today it can be found in a number of areas in both science and engineering. The sediment data set was decomposed into a range of scales using the Daubechies 12 wavelet for the analysis. By determining the energy in the scale ranges a novel distribution, the form size distribution, of the bed forms was computed.

000004732 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000004732 653__ $$aRiver Bed, Sediment Surface, Wavelet Analysis, Surface Forms.

000004732 7112_ $$a15th ASCE Engineering Mechanics Division Conference$$cNew York (US)$$d2002-06-02 / 2002-06-05$$gEM2002
000004732 720__ $$aNyander, Annie$$iAddison, Paul S$$iMcEwan, Ian$$iPender, Gareth
000004732 8560_ $$ffischerc@itam.cas.cz
000004732 8564_ $$s631911$$uhttps://invenio.itam.cas.cz/record/4732/files/243.pdf$$yOriginal version of the author's contribution as presented on CD, .
000004732 962__ $$r4594
000004732 980__ $$aPAPER