New approaches in water balance computations

Cover of: New approaches in water balance computations |

Published by IAHS Press in Wallingford, Oxfordshire .

Written in English

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Subjects:

  • Water balance (Hydrology) -- Congresses.

Edition Notes

Book details

Statementedited by A. Van der Beken ; A. Herrmann.
SeriesIAHS Publication -- no. 148., IAHS publication -- no. 148.
ContributionsBeken, André van der., Herrmann, A., International Union of Geodesy and Geophysics. General Assembly, IAHS International Commission on Surface Water., Unesco.
The Physical Object
Paginationxii, 167 p. :
Number of Pages167
ID Numbers
Open LibraryOL17911701M
ISBN 100947571256

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New Approaches in Water Balance Computations (Proceedings of the Hamburg Workshop, August ). IAHS Publ. Water balance approach to the study of aridity and droughts with special reference to India V.

P, SUBRAHMANYAM Department of Meteorology and Oceanography, Andhra University, Waltair (AP), India. New Approaches in Water Balance Computations (Proceedings of the Hamburg Workshop, August ). IAHS Publ.

Methodological basis of world water balance investigation and computation. SHIKLOMANOV S A. Methods for water balance computations. Paris: Unesco Press, (OCoLC) Online version: Methods for water balance computations.

Paris: Unesco Press, (OCoLC) Material Type: Government publication, International government publication: Document Type: Book: All Authors / Contributors: Alekseĭ Aleksandrovich Sokolov, d.

Stanford Libraries' official online search tool for books, media, journals, databases, government documents and more. Methods for water balance computations; an international guide for research and practice in SearchWorks catalog. Water Balance Methodology for indirect assessment and prediction of basin water yield 75 ecotopes, flow strips, elementary areas, hillslope catenas, hydrological response unit, etc.).

For the latter, Water Balance Models (WBMs) usually calculate one-dimensional heat and water fluxes with a high temporal resolution, predominately using the. Approaches in Water Balance Computations, edited by Topics include estimating actual evaporation from deep lakes and from farm dams and for catchment water balance studies, estimating.

The water loss analysis comprises the calculation of zonal water balance components and performance indicators. In addition, causes of water losses are analyzed by merging the zonal water balance results with failure data, pipe data and information about environmental conditions (soil characteristics, traffic load, ground water etc.).

CONCEPT OF A WATER BALANCE A "water balance" is an accounting of all water volumes that enter and leave a 3-dimensioned space (Fig.

1) over a specified period of time. Changes in internal water storage must also be considered. Both the spatial and temporal boundaries of a water balance must be clearly defined in order to compute and to discuss.

Keywords: Water balance, precipitation, surface and subsurface flow, river runoff, inflow, evaporation, water consumption, area of external runoff, endorheic areas, World Ocean.

Contents 1. Introduction 2. Water Balance Equations 3. Methods for Water Balance Components Computation 4. Water Balance of Land 5. Fresh Water Balance of Oceans 6. These challenges have created a basis for a new definition as beneficial or intelligent use of water allocation among different sectors and users, according to water balance approaches.

In this way it can be define the irrigation efficiency as the ratio of benefitted irrigation water (consumed by crops) to irrigation New approaches in water balance computations book minus soil storage. These challenges have created a basis for a new definition as beneficial or intelligent use of water allocation among different sectors and users, according to water balance approaches (Burt, ).

In this way it can be define the irrigation efficiency as the ratio of benefitted irrigation water (consumed by crops) to irrigation water minus. A water balance can be established for any area of earth's surface by calculating the total precipitation input and the total of various outputs.

The water-balance approach allows an examination of the hydrologic cycle for any period of time. The purpose of the water balance is to describe the various ways in which the water supply is expended. Water balance techniques, one of the main subjects in hydrology, are a means of solution of important theoretical and practical hydrological problems.

On the basis of the water balance approach, it is possible to make a quantitative evaluation of water resources and their change under the influence of people's activities. Water BalanceA water balance can be established for any area ofearths surface by calculating the total precipitation inputand the total of various water-balance approach allows an examination ofthe hydrologic cycle for any period of purpose of the water balance is to describe thevarious ways in which the water supply is.

Techniques for estimating water balance range from very simple methods, such as lumped models and field-experiment techniques, to highly complex computer-based models that can calculate water balance at various temporal (e.g., hourly, daily, monthly, and yearly) and spatial scales (Xu and Singh, ; Zhang et al., ; Ghandhari and Moghaddam.

There are various approaches to the definition of the different types of evapotranspiration to describe the evaporative demand of the atmosphere. In the physical sense, actual evapotranspiration (AET) is the sum of the evaporation (E) from the water, soil and plant cover and the amount of water transpired by plants (T).

This is often limited by. Oliver, H. R.:The availability of evaporation data in space and time for use in water balance computations, in: Van der Beken, A. and A. Herrmann, (eds.), New Approaches in Water Balance Computations (Proceedings of the Hamburg Workshop), IAHS Publ.

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A general water balance equation is: = + + where is precipitation is evapotranspiration is streamflow is the change in storage (in soil or the bedrock / ground water) This equation uses the principles of conservation of mass in a closed system, whereby any water entering a system (via precipitation), must be transferred into either evaporation, surface runoff (eventually reaching the channel.

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Methodological basis of world water balance investigation and computation. 77–92 in New Approaches in Water Balance Computations. Van der Beken and A.

Herrmann, eds, IAHS Publication no. Smith, W.H.F., and D.T. Sandwell. The Water Balance. The balance between inputs and outputs is known as the water balance or budget. The water balance can be shown using the formula: precipitation (P) = streamflow (Q) + evapotranspiration (E) +/- changes in storage (S) P=Q+E +/- S.

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Dyck, Siegfried,Overview of the present status of the concepts of water balance models; in, New Approaches in Water Balance Computations, A. Van der Beken and A. Herrman (eds.): IASH Publication, no. p. Methodological basis of world water balance investigation and computation.

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Chapter 2 discusses the scope of the book. Journal of Chemical Theory and Computation16, 9, (Condensed Matter, Interfaces, and Materials) Publication Date (Web): Aug Abstract.Computation of the water balance is on a daily time step. not exceed potential transpiration. Advantages of equation (3) include the facts that values of K, can be estimated from greenhouse and field plot studies and can vary through the growing season to reflect phenology.

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Calibration data are as yet limited. Nevertheless, in spite of these limitations the model should provide a good conceptual tool to understand the hydrology of the Carneros Creek watershed.

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