Abstract
Brick-pattern ripples are three-dimensional ripple marks composed of transverse crests and longitudinal bridges. In this study, the formation process of brick-pattern ripples in an oscillatory flow is investigated experimentally by means of the visualization of sediment transport and particle tracking velocimetry (PTV). The experiments are made for the brick-pattern ripple formation over a model of two-dimensional ripple marks. The velocity distributions above brick pattern ripples are obtained from the PTV measurements. It is seen from the experimental results that three-dimensional separation vortices carry sediment to make the bridges larger and more stable. Thus, the formation of brick-pattern ripples may be accelerated by a certain kind of positive feedback due to the interaction between the separation vortices and sediment transports.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
