1 - AS 3778.3.6-2001 MEASUREMENT OF WATER FLOW IN OPEN CHANNELS - VELOCITY-AREA METHODS-MEASUREMENT OF FLOW IN TIDAL CHANNELS
4 - PREFACE
6 - CONTENTS
7 - 1 Scope
7 - 2 Normative references
7 - 3 Terms and definitions
8 - 4 Principles of methods of measurement
8 - 4.1 General
8 - 4.2 Single measurement methods
8 - 4.2.1 Velocity-area method
8 - 4.2.2 Cubature method
8 - 4.3 Continuous measurement methods
8 - 4.3.1 Ultrasonic method
8 - 4.3.2 Electromagnetic method
8 - 4.3.3 Unsteady-flow models
9 - 5 Special considerations and choice of method
9 - 5.1 Special considerations
9 - 5.2 Choice of method
9 - 5.2.1 General
9 - 5.2.2 Physical conditions
10 - 5.2.3 Selection and demarcation of site
11 - 6 Measurement of tidal flow
11 - 6.1 Techniques for single measurements of tidal flow
11 - 6.1.1 Measurement of tidal flow by velocity-area methods
14 - 6.1.2 Measurement of tidal flow by the moving boat method
14 - 6.2 Techniques appropriate for continuous measurement of tidal flow
14 - 6.2.1 Measurement of tidal flow by the ultrasonic method
15 - 6.2.2 Measurement of tidal flow by the electromagnetic method
15 - 6.2.3 Computations
16 - 7 Uncertainties in tidal flow measurement
16 - 7.1 General
16 - 7.2 Uncertainties in measurement by velocity area method
16 - 7.2.1 Sources of uncertainty
17 - 7.2.2 Individual components of errors
18 - 7.2.3 Resultant random uncertainty in measurement of flow
18 - 7.2.4 Resultant systematic uncertainty in measurement flow
18 - 7.2.5 Combined uncertainty at the 95 % confidence level
19 - 7.2.6 Combined standard error in the determination of the tidal (ebb or flood) volume
20 - Annex A - Measurement of tidal flow by the cubature method
20 - A.1 Site requirements
20 - A.2 Field measurements
21 - A.3 Computation - Method I
22 - A.4 Computation - Method II
23 - Annex B - Flow measurement methods suitable for tidal conditions
26 - Annex C - Record of velocity measurement of a tidal river (see 6.1)
28 - Bibliography