Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Experiment Videos

Bedform alignment in directionally varying flows.

D M Rubin, R E Hunter

    Science (New York, N.Y.)
    |July 17, 1987
    PubMed
    Summary
    This summary is machine-generated.

    Related Concept Videos

    You might also read

    Related Articles

    Articles linked to this work by shared authors, journal, and citation graph.

    Sort by
    Same author

    Evidence for a Diagenetic Origin of Vera Rubin Ridge, Gale Crater, Mars: Summary and Synthesis of <i>Curiosity</i>'s Exploration Campaign.

    Journal of geophysical research. Planets·2021
    Same author

    Correction to: A Mixed Methods Evaluation of Early Childhood Abuse Prevention Within Evidence-Based Home Visiting Programs.

    Maternal and child health journal·2018
    Same author

    A Mixed Methods Evaluation of Early Childhood Abuse Prevention Within Evidence-Based Home Visiting Programs.

    Maternal and child health journal·2018
    Same author

    Sedimentary processes of the Bagnold Dunes: Implications for the eolian rock record of Mars.

    Journal of geophysical research. Planets·2018
    Same author

    Large wind ripples on Mars: A record of atmospheric evolution.

    Science (New York, N.Y.)·2016
    Same author

    Deposition, exhumation, and paleoclimate of an ancient lake deposit, Gale crater, Mars.

    Science (New York, N.Y.)·2015
    Same journal

    A native sulfur deposit in Gale crater, Mars.

    Science (New York, N.Y.)·2026
    Same journal

    Coordinated demise of harmful algal blooms.

    Science (New York, N.Y.)·2026
    Same journal

    Genetic effects put into context.

    Science (New York, N.Y.)·2026
    Same journal

    Bacteria share proteins to survive antibiotics.

    Science (New York, N.Y.)·2026
    Same journal

    Impacts shaped Earth's first continents.

    Science (New York, N.Y.)·2026
    Same journal

    Erratum for the Report "Covalently bonded single-molecule junctions with stable and reversible photoswitched conductivity" by C. Jia <i>et al</i>.

    Science (New York, N.Y.)·2026
    See all related articles

    Sediment bedform orientation is often used to infer sediment transport direction. However, experiments show bedforms can trend in various directions, challenging this assumption for accurate transport analysis.

    Area of Science:

    • Geomorphology
    • Sediment Transport Dynamics
    • Fluid Mechanics

    Background:

    • Sediment bedforms are commonly assumed to align perpendicular or parallel to sediment transport direction.
    • This assumption underpins the use of observed bedform trends from remote sensing and field studies to determine transport pathways.

    Purpose of the Study:

    • To experimentally investigate the relationship between bedform orientation and sediment transport direction under bidirectional flow conditions.
    • To test the validity of presumptions regarding bedform trend as a sole indicator of sediment transport direction.

    Main Methods:

    • Controlled laboratory experiments using a rotating sand-covered board in steady winds to simulate bidirectional flows.
    • Systematic variation of the angle between two wind components and the proportion of sand transport in each direction.

    Related Experiment Videos

  • Observation and analysis of resultant bedform types (transverse, oblique, longitudinal) and their orientation relative to transport.

    • Main Results:

    • Experimental bedforms, regardless of their classification (transverse, oblique, longitudinal), consistently oriented to maximize gross sediment transport across them.
    • A significant proportion of generated bedforms exhibited trends that were neither perpendicular nor parallel to the resultant sediment transport direction.
    • Bedform orientation was found to be dependent on the interplay between flow direction components and sediment transport proportions.

    Conclusions:

    • The study demonstrates that the orientation of sediment bedforms is not a reliable sole indicator of sediment transport direction.
    • Presuming bedform alignment (transverse or parallel) can lead to inaccurate estimations of sediment transport pathways.
    • Understanding the complex dynamics of bidirectional flows is crucial for accurately interpreting geomorphological evidence of sediment movement.