Shape and erosion of pebbles

by: DJ Durian, H Bideaud, P Duringer, AP Schroder, CM Marques

Physical Review E (Statistical, Nonlinear, and Soft Matter Physics), Vol. 75, No. 2. (2007)

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Abstract

The shapes of flat pebbles may be characterized in terms of the statistical distribution of curvatures measured along their contours. We illustrate this method for clay pebbles eroded in a controlled laboratory apparatus, and also for naturally occurring rip-up clasts formed and eroded in the Mont St.-Michel bay. We find that the curvature distribution allows finer discrimination than traditional measures of aspect ratios. Furthermore, it connects to the microscopic action of erosion processes that are typically faster at protruding regions of high curvature. We discuss in detail how the curvature may be reliably deduced from digital photographs.

@article{citeulike:1175923, abstract = {The shapes of flat pebbles may be characterized in terms of the statistical distribution of curvatures measured along their contours. We illustrate this method for clay pebbles eroded in a controlled laboratory apparatus, and also for naturally occurring rip-up clasts formed and eroded in the Mont St.-Michel bay. We find that the curvature distribution allows finer discrimination than traditional measures of aspect ratios. Furthermore, it connects to the microscopic action of erosion processes that are typically faster at protruding regions of high curvature. We discuss in detail how the curvature may be reliably deduced from digital photographs.}, author = {Durian, D. J. and Bideaud, H. and Duringer, P. and Schroder, A. P. and Marques, C. M. }, citeulike-article-id = {1175923}, doi = {10.1103/PhysRevE.75.021301}, journal = {Physical Review E (Statistical, Nonlinear, and Soft Matter Physics)}, keywords = {2007, cool, durian, grains, pre, qualif2, shape}, number = {2}, posted-at = {2008-06-11 23:19:36}, priority = {2}, publisher = {APS}, title = {Shape and erosion of pebbles}, url = {http://scitation.aip.org/getabs/servlet/GetabsServlet?prog=normal\&id=PLEEE8000075000002021301000001\&idtype=cvips\&gifs=yes}, volume = {75}, year = {2007} }

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TY - JOUR ID - citeulike:1175923 L3 - citeulike-article-id:1175923 TI - Shape and erosion of pebbles JF - Physical Review E (Statistical, Nonlinear, and Soft Matter Physics) VL - 75 IS - 2 PB - APS N2 - The shapes of flat pebbles may be characterized in terms of the statistical distribution of curvatures measured along their contours. We illustrate this method for clay pebbles eroded in a controlled laboratory apparatus, and also for naturally occurring rip-up clasts formed and eroded in the Mont St.-Michel bay. We find that the curvature distribution allows finer discrimination than traditional measures of aspect ratios. Furthermore, it connects to the microscopic action of erosion processes that are typically faster at protruding regions of high curvature. We discuss in detail how the curvature may be reliably deduced from digital photographs. KW - 2007 KW - cool KW - durian KW - grains KW - pre KW - qualif2 KW - shape AU - Durian, DJ AU - Bideaud, H AU - Duringer, P AU - Schroder, AP AU - Marques, CM PY - 2007/// UR - http://scitation.aip.org/getabs/servlet/GetabsServlet?prog=normal&id=PLEEE8000075000002021301000001&idtype=cvips&gifs=yes ER -

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