EN ISO 772:2000/A1:2003
(Amendment)Hydrometric determinations - Vocabulary and symbols (ISO 772:1996/Amd1:2002)
Hydrometric determinations - Vocabulary and symbols (ISO 772:1996/Amd1:2002)
Hydrometrische Festlegungen - Begriffe und Zeichen (ISO 772:1996/Amd1:2002)
Déterminations hydrométriques - Vocabulaire et symboles (ISO 772:1996/Amd1:2002)
La CEI 61784-5-8:2013 définit les profils d'installation pour la CPF 8 (CC-Link). Chaque profil d'installation de CP est spécifié dans une partie séparée de la présente série de normes. Cette norme fait partie d'une série élaborée pour faciliter l'utilisation des réseaux de communication dans des systèmes de contrôle-commande industriels.
Cette publication doit être lue conjointement avec la
CEI 61918:2013.
Hidrometrične določbe - Slovar in simboli (ISO 772:1996/Amd1:2002)
General Information
Relations
Standards Content (Sample)
SLOVENSKI STANDARD
01-september-2004
+LGURPHWULþQHGRORþEH6ORYDULQVLPEROL ,62 $PG
Hydrometric determinations - Vocabulary and symbols (ISO 772:1996/Amd1:2002)
Hydrometrische Festlegungen - Begriffe und Zeichen (ISO 772:1996/Amd1:2002)
Déterminations hydrométriques - Vocabulaire et symboles (ISO 772:1996/Amd1:2002)
Ta slovenski standard je istoveten z: EN ISO 772:2000/A1:2003
ICS:
01.040.17 Meroslovje in merjenje. Metrology and measurement.
Fizikalni pojavi (Slovarji) Physical phenomena
(Vocabularies)
17.120.20 Pretok v odprtih kanalih Flow in open channels
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
EUROPEAN STANDARD
EN ISO 772:2000/A1
NORME EUROPÉENNE
EUROPÄISCHE NORM
December 2003
ICS 01.040.17; 17.120.20
English version
Hydrometric determinations - Vocabulary and symbols (ISO
772:1996/Amd1:2002)
Déterminations hydrométriques - Vocabulaire et symboles Hydrometrische Festlegungen - Begriffe und Zeichen (ISO
(ISO 772:1996/Amd1:2002) 772:1996/Amd1:2002)
This amendment A1 modifies the European Standard EN ISO 772:2000; it was approved by CEN on 21 November 2003.
CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for inclusion of this
amendment into the relevant national standard without any alteration. Up-to-date lists and bibliographical references concerning such
national standards may be obtained on application to the Management Centre or to any CEN member.
This amendment exists in three official versions (English, French, German). A version in any other language made by translation under the
responsibility of a CEN member into its own language and notified to the Management Centre has the same status as the official versions.
CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece,
Hungary, Iceland, Ireland, Italy, Luxembourg, Malta, Netherlands, Norway, Portugal, Slovakia, Spain, Sweden, Switzerland and United
Kingdom.
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© 2003 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN ISO 772:2000/A1:2003 E
worldwide for CEN national Members.
Foreword
The text of ISO 772:1996/Amd 1:2002 has been prepared by Technical Committee ISO/TC 113
"Hydrometric determinations” of the International Organization for Standardization (ISO) and has
been taken over as EN ISO 772:2000/A1:2003 by Technical Committee CEN/TC 318
"Hydrometry", the secretariat of which is held by BSI.
This European Standard shall be given the status of a national standard, either by publication of
an identical text or by endorsement, at the latest by June 2004, and conflicting national
standards shall be withdrawn at the latest by June 2004.
According to the CEN/CENELEC Internal Regulations, the national standards organizations of
the following countries are bound to implement this European Standard: Austria, Belgium, Czech
Republic, Denmark, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy,
Luxembourg, Malta, Netherlands, Norway, Portugal, Slovakia, Spain, Sweden, Switzerland and
the United Kingdom.
Endorsement notice
The text of ISO 772:1996/Amd 1:2002 has been approved by CEN as EN ISO
772:2000/A1:2003 without any modifications.
INTERNATIONAL ISO
STANDARD 772
Fourth edition
1996-04-15
AMENDMENT 1
2002-11-15
Hydrometric determinations — Vocabulary
and symbols
AMENDMENT 1: Additional terms and
definitions
Déterminations hydrométriques — Vocabulaire et symboles
AMENDEMENT 1: Termes et définitions supplémentaires
Reference number
ISO 772:1996/Amd.1:2002(E)
©
ISO 2002
ISO 772:1996/Amd.1:2002(E)
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© ISO 2002
The reproduction of the terms and definitions contained in this International Standard is permitted in teaching manuals, instruction booklets,
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ii © ISO 2002 – All rights reserved
ISO 772:1996/Amd.1:2002(E)
Contents Page
Foreword . iv
1 General terms . 1
2 Velocity-area methods. 3
3 Notches, weirs and flumes. 4
4 Dilution methods. 4
5 Instruments and equipment. 7
6 Sediment transport . 9
8 Groundwater. 9
Alphabetical index. 20
ISO 772:1996/Amd.1:2002(E)
Foreword
ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO
member bodies). The work of preparing International Standards is normally carried out through ISO technical
committees. Each member body interested in a subject for which a technical committee has been established has
the right to be represented on that committee. International organizations, governmental and non-governmental, in
liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical
Commission (IEC) on all matters of electrotechnical standardization.
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The main task of technical committees is to prepare International Standards. Draft International Standards adopted
by the technical committees are circulated to the member bodies for voting. Publication as an International
Standard requires approval by at least 75 % of the member bodies casting a vote.
Attention is drawn to the possibility that some of the elements of this Amendment may be the subject of patent
rights. ISO shall not be held responsible for identifying any or all such patent rights.
Amendment 1 to ISO 772:1996 was prepared by Technical Committee ISO/TC 113, Hydrometric determinations,
Subcommittee SC 3, Terminology and symbols.
Amendment 1 to ISO 772:1996 gives additional English terms and definitions, used in the field of hydrometric
determinations, to the terms and definitions included in ISO 772:1996.
iv © ISO 2002 – All rights reserved
ISO 772:1996/Amd.1:2002(E)
Hydrometric determinations — Vocabulary and symbols
AMENDMENT 1: Additional terms and definitions
1 General terms
Page 22, clause 1
At the end of clause 1, General terms, add the following terms and definitions.
1.146
hydrometry
science of the measurement of water including the methods, techniques and instrumentation used
NOTE The adjective is “hydrometric”.
1.147
hydrological cycle
constant movement of water above, on and below the earth’s surface
1.148
hydrogeology
study of subsurface water in its geological context
1.149
hydraulic gradient
change in static head per unit distance in a given direction
1.150
static head
height, relative to an arbitrary reference level, of a column of water that can be supported by the static
pressure at a given point
1.151
creek
〈river〉 small river, often a tributary to a larger river
1.152
creek
〈sea coast〉 recessed inlet on a sea coast or estuary
1.153
hydrograph
relation in graphical, equational or tabular form between time and flow variables such as depth, discharge,
stage and velocity
NOTE Typically, stage and discharge hydrographs are used for open channel flows.
1.154
gradually-varied unsteady flow
generally nonuniform flow in which there are no abrupt changes in depth along the longitudinal axis of a
channel and in which depth, together with discharge and velocity, changes with time
ISO 772:1996/Amd.1:2002(E)
1.155
live storage
reservoir storage which can be drawn off for users downstream
1.156
total storage
reservoir storage between the lowest bed level and the top water level
1.157
flood storage
volume of water temporarily held above the top water level of a reservoir during a flood event
NOTE Flood storage is not retained in the reservoir but is discharged through an overflow until the normal top water
level is reached.
1.158
boundary condition
condition to be satisfied by a dependent variable of a differential equation along the boundary of a model
domain
NOTE Boundary conditions for the dependent variables are specified at the physical extremities of the modelled region
for the duration of the model application.
1.159
Courant condition
condition for the numerical stability of the explicit formulation of a numerical scheme which requires that the
ratio (C ) of the propagation speed of a physical disturbance to that of a numerical signal should not exceed
r
unity, i.e. C u 1
r
NOTE The condition is a requirement for an explicit-finite difference formulation applied to a hyperbolic partial
differential equation.
1.160
explicit finite-difference numerical scheme
scheme which converts either the characteristic equation or the governing equation into an equation from
which any unknown may be evaluated directly (explicitly) without an iterative computation
NOTE 1 Dependent variables on the advanced time level are determined one point at a time from known values and
conditions at the present or previous time levels.
NOTE 2 The stability of an explicit scheme is conditional upon an error being a function of the time and distance finite-
difference step sizes which may result in an error growing as the solution progresses.
NOTE 3 When the Courant condition is met, resulting in limitations in the maximum time and distance steps which can be
used, generally an explicit scheme is stable, but there can be instances of instability.
NOTE 4 If the converted equation is linear and algebraic, an iterative computation is not needed.
1.161
implicit finite-difference numerical scheme
scheme which converts either the characteristic equation or the governing equation into a nonlinear algebraic
equation from which an unknown may be evaluated iteratively
NOTE 1 All of the unknowns within the model domain are determined simultaneously.
NOTE 2 Generally an implicit scheme is stable.
NOTE 3 Although complex algorithms are required, generally an implicit scheme is computationally sufficient.
1.162
initial condition
description of the discharge, depth of flow or other dynamic condition at the beginning of a simulation period
for unsteady flow models
NOTE For subsequent times, the state of the system is described by the governing equations and the boundary
conditions.
2 © ISO 2002 – All rights reserved
ISO 772:1996/Amd.1:2002(E)
1.163
method of characteristics
mathematical approach for solving boundary values by transforming the original partial differential equations
representing the physical system into corresponding characteristic equations
NOTE Characteristic equations are ordinary differential equations and, generally, are more amenable to numerical
solution than are the partial differential equations.
1.164
momentum coefficient
Boussinesq coefficient
quantification of the deviation of the velocity at any point in a cross-section from a uniform velocity distribution
in the same c
...
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