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The AAPG/Datapages Combined Publications Database

Journal of Sedimentary Research (SEPM)

Abstract


Journal of Sedimentary Petrology
Vol. 50 (1980)No. 1. (March), Pages 173-182

Oscillation Sand Ripples Generated by Laboratory Apparatus

Martin C. Miller (2), Paul D. Komar

ABSTRACT

Laboratory data on the geometry of oscillation ripples, collected by a number of investigators using a variety of experimental devices, have been compared to determine differences among oscillating bed, Previous HitwaveNext Hit flume and water tunnel devices. Additional data have been obtained employing a Previous HitwaveTop flume that generates large waves. It was found that ripples formed in oscillating-bed devices do not correspond well with those developed under progressive waves in flumes and in water tunnels. The remaining vortex ripple data, the class of ripples primarily formed under ocean waves, are found to correspond to the linear relationship, ^lgr = 0.65do, where ^lgr is the ripple spacing and do is the near-bottom orbital diameter. The data depart from this relationship as the orbital diameter increases, the departure occurring at higher orbital diameters as the grain size increases. A tentative diagram is developed relating the maximum possible tipple spacing to the median sand diameter.


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