A New Method For The Measurement Of Bedload Transport Using Time Sequenced Bathymetric Data.

Overview

Vessel mounted Multibeam depth sounders can be used to map the bathymetric features of rivers, including sand waves. This research has shown that it is possible to use two sequential bathymetric surfaces which contain sand wave profiles to determine bed load transport. Starting with the well known bed-load equation for translating bed forms, analytic and geometric considerations are presented which establish a relationship between the rate of scour on the eroding side of a sand dune and the average transport in ...
See more details below
Other sellers (Paperback)
  • All (4) from $71.94   
  • New (3) from $71.94   
  • Used (1) from $80.69   
Sending request ...

More About This Book

Overview

Vessel mounted Multibeam depth sounders can be used to map the bathymetric features of rivers, including sand waves. This research has shown that it is possible to use two sequential bathymetric surfaces which contain sand wave profiles to determine bed load transport. Starting with the well known bed-load equation for translating bed forms, analytic and geometric considerations are presented which establish a relationship between the rate of scour on the eroding side of a sand dune and the average transport in the same dune, for certain ideal conditions. It is further shown that the rate of scour is twice the average transport. Using these two pieces of information, bedload transport can be computed from the scour rate obtained from the difference of two surfaces acquired over a finite time interval. To test the new method, three data sets were acquired. Two of these sets were obtained in flumes under controlled conditions. This provided a measured value of a bedload to which the value computed by the new method could be compared. Computed results show very good agreement with measured data, having average values that were 30% and 8% greater than the measured value for sets 1 and 2 respectively. The third data set was from Mississippi River bathymetry. Computations were made on 5 large sand waves for which sequential data were available over a range of time intervals. Although no measured value was available to compare to, the results were consistent within a given wave. All indications are that the method is repeatable and consistent when reliable bathymetric data are available. Instrument resolution was considered, and will play an important role in determining a minimum time interval between sequential profiles. At this time the method is limited to use on large sand bed rivers in which lower regime sand waves (no antidunes) are present and in which measurements can be made. For optimal data collection efficiency, some knowledge of dune size and wave speed is necessary.
Read More Show Less

Product Details

  • ISBN-13: 9781244075597
  • Publisher: BiblioLabsII
  • Publication date: 9/11/2011
  • Pages: 86
  • Product dimensions: 7.44 (w) x 9.69 (h) x 0.18 (d)

Customer Reviews

Be the first to write a review
( 0 )
Rating Distribution

5 Star

(0)

4 Star

(0)

3 Star

(0)

2 Star

(0)

1 Star

(0)

Your Rating:

Your Name: Create a Pen Name or

Barnes & Noble.com Review Rules

Our reader reviews allow you to share your comments on titles you liked, or didn't, with others. By submitting an online review, you are representing to Barnes & Noble.com that all information contained in your review is original and accurate in all respects, and that the submission of such content by you and the posting of such content by Barnes & Noble.com does not and will not violate the rights of any third party. Please follow the rules below to help ensure that your review can be posted.

Reviews by Our Customers Under the Age of 13

We highly value and respect everyone's opinion concerning the titles we offer. However, we cannot allow persons under the age of 13 to have accounts at BN.com or to post customer reviews. Please see our Terms of Use for more details.

What to exclude from your review:

Please do not write about reviews, commentary, or information posted on the product page. If you see any errors in the information on the product page, please send us an email.

Reviews should not contain any of the following:

  • - HTML tags, profanity, obscenities, vulgarities, or comments that defame anyone
  • - Time-sensitive information such as tour dates, signings, lectures, etc.
  • - Single-word reviews. Other people will read your review to discover why you liked or didn't like the title. Be descriptive.
  • - Comments focusing on the author or that may ruin the ending for others
  • - Phone numbers, addresses, URLs
  • - Pricing and availability information or alternative ordering information
  • - Advertisements or commercial solicitation

Reminder:

  • - By submitting a review, you grant to Barnes & Noble.com and its sublicensees the royalty-free, perpetual, irrevocable right and license to use the review in accordance with the Barnes & Noble.com Terms of Use.
  • - Barnes & Noble.com reserves the right not to post any review -- particularly those that do not follow the terms and conditions of these Rules. Barnes & Noble.com also reserves the right to remove any review at any time without notice.
  • - See Terms of Use for other conditions and disclaimers.
Search for Products You'd Like to Recommend

Recommend other products that relate to your review. Just search for them below and share!

Create a Pen Name

Your Pen Name is your unique identity on BN.com. It will appear on the reviews you write and other website activities. Your Pen Name cannot be edited, changed or deleted once submitted.

 
Your Pen Name can be any combination of alphanumeric characters (plus - and _), and must be at least two characters long.

Continue Anonymously

    If you find inappropriate content, please report it to Barnes & Noble
    Why is this product inappropriate?
    Comments (optional)