TECHNICAL ISO/TR REPORT 9212 Third edition 2015-06-01 Hydrometry - Methods of measurement of bedload discharge Hydrometrie - Methodes de mesurage du debit des materiaux charriessurlefond Reference number ISO/TR 9212:2015(E) ISO International Organization for Standardization Zhejiang Institute of Standardization 5956617 IS02015 Not for Resale, 2015/8/7 06:13:26 itted without license from IHS IS0/TR 9212:2015(E) COPYRIGHTPROTECTEDDOCUMENT IS02015,PublishedinSwitzerland All rights reserved. Unless otherwise specified, no part of this publication may be reproduced or utilized otherwise in any form or by any means, electronic or mechanical, including photocopying, or posting on the internet or an intranet, without prior written permission. Permission can be requested from either ISO at the address below or ISO's member body in the country of the requester. ISO copyright office Ch. de Blandonnet 8 . CP 401 CH-1214 Vernier, Geneva, Switzerland Tel.+41 22 749 0111 Fax+41227490947 [email protected] www.iso.org Intenationai br PrganizationforStandardization I by IHS unde Not for Resale, 2015/8/7 06:13:26 etworking permitted without license from IHS IS0/TR 9212:2015(E) Contents Page Foreword ..iv Introduction. ..V 1 Scope ..1 2 Normative references 3 Terms and definitions 4 Measurement of bedload ..1 4.1 General ..1 4.2 Direct measurement methods ..1 4.3 Indirect measurement methods. 5 Design and strategy of measurement of bedload discharge .2 6 Site selection .2 7 Bedload samplers and traps .3 7.1 Bedload samplers. .3 7.1.1 Requirements of an ideal bedload sampler .3 7.1.2 Basket or box type sampler.. 7.1.3 Frame and net sampler. 4 7.1.4 Pressure-difference sampler. .4 7.1.5 Advantages and disadvantages 7.1.6 Characteristics of bedload samplers .9 7.2 Measurement using bedload trap ..10 7.2.1 Vortex tube bedload trap .10 7.2.2 Pit and Trough trap.. ..11 7.2.3 Advantages and disadvantages .12 8 Procedures for measurement of bedload discharge using bedload samplers ..12 8.1 General .12 8.2 Sample identification .13 8.3 Calculations ..14 8.4 Errors ..15 9 Indirect measurement of bedload .16 9.1 General. .16 9.2 Differential measurement ..16 9.3 Volumetric measurement .16 9.4 Dune-tracking. ..17 9.4.1 Moving boat. .17 9.4.2 In situ echo sounder. ..17 9.4.3 Accuracy of the dune-tracking methods. ..18 9.5 Tracers. .18 9.6 Remote sensing LiDAR .18 9.7 Acousticinstruments. ..19 9.8 Acoustic Doppler current profiler .19 Annex A (informative) Bedload-surrogate monitoring technologies[8] ..20 Bibliography .24 iii see=Zhejiang Institute of Standardization 5956617 ed without license from IHS Not for Resale, 2015/8/7 06:13:26