World Library  
Flag as Inappropriate
Email this Article

Bar (river morphology)

Article Id: WHEBN0022016602
Reproduction Date:

Title: Bar (river morphology)  
Author: World Heritage Encyclopedia
Language: English
Subject: River channel migration, River morphology, River, Mouth bar, Channel types
Collection: Fluvial Landforms, Geomorphology, Hydrology, River Islands, Sedimentology, Water Streams
Publisher: World Heritage Encyclopedia
Publication
Date:
 

Bar (river morphology)

Gravel bar in the American River, Washington, USA.

A bar in a river is an elevated region of sediment (such as sand or gravel) that has been deposited by the flow. Types of bars include mid-channel bars (also called braid bars, and common in braided rivers), point bars (common in meandering rivers), and mouth bars (common in river deltas). Bars are typically found in the slowest moving, shallowest parts of rivers and streams,[1] and are often parallel to the shore and occupy the area farthest from the thalweg.[2]

The locations of bars are determined by the geometry of the river and the flow through it. Point bars form on the inside of meander bends in meandering river because the shallow flow and low shear stresses there reduce the amount of material that can be carried there. The excess material falls out of transport and forms the bar.

See also

References

  1. ^ Strahler, Alan; Strahler, Arthur (1996). Introducing Physical Geography. USA: John Wiley & Sons Inc. pp. 430, 529.  
  2. ^ Ritter, Dale F.; Craig R. Kochel; Jerry R. Miller (1995). Process Geomorphology.  

Further reading

  • John Bridge and Robert Demicco (2008). Earth Surface Processes, Landforms and Sediment Deposits. Cambridge, UK: Cambridge University Press.  
This article was sourced from Creative Commons Attribution-ShareAlike License; additional terms may apply. World Heritage Encyclopedia content is assembled from numerous content providers, Open Access Publishing, and in compliance with The Fair Access to Science and Technology Research Act (FASTR), Wikimedia Foundation, Inc., Public Library of Science, The Encyclopedia of Life, Open Book Publishers (OBP), PubMed, U.S. National Library of Medicine, National Center for Biotechnology Information, U.S. National Library of Medicine, National Institutes of Health (NIH), U.S. Department of Health & Human Services, and USA.gov, which sources content from all federal, state, local, tribal, and territorial government publication portals (.gov, .mil, .edu). Funding for USA.gov and content contributors is made possible from the U.S. Congress, E-Government Act of 2002.
 
Crowd sourced content that is contributed to World Heritage Encyclopedia is peer reviewed and edited by our editorial staff to ensure quality scholarly research articles.
 
By using this site, you agree to the Terms of Use and Privacy Policy. World Heritage Encyclopedia™ is a registered trademark of the World Public Library Association, a non-profit organization.
 


Copyright © World Library Foundation. All rights reserved. eBooks from Project Gutenberg are sponsored by the World Library Foundation,
a 501c(4) Member's Support Non-Profit Organization, and is NOT affiliated with any governmental agency or department.