Net transport refers to the difference between the total upcoast and the total downcoast movement of sand approximately parallel to the shore over a specified period, often one year (see entries on Cross-Shore Sediment Transport and Longshore Sediment Transport ). Waves approaching the shore at an oblique angle, such that the crests of the breakers are at an angle to the shoreline, generate longshore currents that convey the mobilized sand along the shore (see entry on Waves). In many locales, the wave approach direction varies over time such that this transport can be in either direction relative to the shore. Consequently, sand may move downcoast (positive direction) for an interval and then, as wave conditions change or the lesser effects of tidal or wind-driven currents intervene, reverse and move upcoast (negative direction). Summing the volumes of sand transport over the period of interest and taking into account their signs yields net transport. The customary units of net...
This is a preview of subscription content, log in via an institution.
Bibliography
Castel D, Seymour RJ (1986) Coastal data information program longshore sand transport report, February 1978–December 1981. Institute of Marine Resources, University of California, IMR Reference No. 86-2. 216 pp
Author information
Authors and Affiliations
Corresponding author
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2018 Springer International Publishing AG, part of Springer Nature
About this entry
Cite this entry
Seymour, R.J. (2018). Net Transport. In: Finkl, C., Makowski, C. (eds) Encyclopedia of Coastal Science . Encyclopedia of Earth Sciences Series. Springer, Cham. https://doi.org/10.1007/978-3-319-48657-4_226-2
Download citation
DOI: https://doi.org/10.1007/978-3-319-48657-4_226-2
Received:
Accepted:
Published:
Publisher Name: Springer, Cham
Print ISBN: 978-3-319-48657-4
Online ISBN: 978-3-319-48657-4
eBook Packages: Springer Reference Earth and Environm. ScienceReference Module Physical and Materials ScienceReference Module Earth and Environmental Sciences