论文信息 - Automated Analysis of Imbrication and Flow Direction in Alluvial Sediments Using Laser-Scan Data

Automated Analysis of Imbrication and Flow Direction in Alluvial Sediments Using Laser-Scan Data

Abstract An automated method for analysis of imbrication and flow direction in alluvial sediments is described that uses digital elevation models (DEMs) derived from three-dimensional laser scanning of dry gravel river beds. A global analysis of the DEM is used that does not depend on location and analysis of individual grains. The method is more convenient and quantitative than are existing techniques. Methods are described for determining the suitability of particular data sets for analysis by this method. The method is applied to gravel river beds on the South Island of New Zealand.

[1] W. C. Krumbein. Preferred Orientation of Pebbles in Sedimentary Deposits , 1939, The Journal of Geology.

[2] J. Schlee. Fluvial gravel fabric , 1957 .

[3] Richard K. Beatson,et al. Surface interpolation with radial basis functions for medical imaging , 1997, IEEE Transactions on Medical Imaging.

[4] D. J. Doeglas. THE STRUCTURE OF SEDIMENTARY DEPOSITS OF BRAIDED RIVERS , 1962 .

[5] Jochen Aberle,et al. Measurement and analysis of alluvial bed roughness / Mesure et analyse de la rugosité de lit d'alluvion , 2004 .

[6] M. Wolman. A method of sampling coarse river‐bed material , 1954 .

[7] B. Rust. Pebble orientation in fluvial sediments , 1972 .

[8] Dale I. Bray,et al. Sampling Procedures for Coarse Fluvial Sediments , 1971 .

[9] G. Kelling,et al. Flume Studies of the Reorientation of Pebbles and Shells , 1967, The Journal of Geology.

[10] Jochen Aberle,et al. Measurement and analysis of alluvial bed roughness , 2004 .

[11] Maurice J. Duncan,et al. Relatively Rough Flow Resistance Equations , 2002 .

[12] D. F. Ritter,et al. Cobble imbrication as a sensitive indicator of subtle local changes in river flow direction , 1981 .