International Organization for Standardization

Hydrometry - Methods of measurement of bedload discharge - Third Edition
 N TR 9212

Annotation

This Technical Report reviews the current status of direct and indirect bedload-measurement techniques. The methods are mainly based on grain size distribution of the bedload, channel width, depth, and velocity of flow. This Technical Report outlines and explains several methods for direct and indirect measurement of bedload in streams, including various types of sampling devices.

The purposes of measuring bedload-transport rates are to

a) increase the accuracy of estimating total sediment load in rivers and deposition in reservoirs,

b) gain knowledge of bedload transport that cannot be completely measured by conventional suspended-sediment collection methods,

c) provide data to calibrate or verify theoretical transport models, and

d) provide information needed in the design of river diversion and entrainment structures.

NOTE The units of measurement used in this Technical Report are SI units.

Автоматический перевод:

Гидрометрия - Методы измерения выброса bedload - Третий Выпуск

Этот Технический отчет рассматривает текущее состояние прямых и косвенных bedload-техник-измерений. Методы в основном основаны на гранулометрическом составе bedload, ширины канала, глубины и скорости потока. Этот Технический доклад излагается и объясняет несколько методов для прямого и косвенного измерения bedload в потоках, включая различные типы пробоотборников.