Groundwater ; Hydrology ; Micro computing ; Model ; Soil water ; System
Eau du sol ; Eau souterraine ; Hydrologie ; Micro-informatique ; Modèle ; Système
This short paper describes the use of Excel spreadsheet Solver facility for deriving estimates in a solute mixing model equation with more than one unknown.
study area are outlined. This is followed by a synthesis of the current state of GIS and the models used to conceptualize spatial data within such systems. The suitability of such models for application to hydrological research is then emphasized.
Given the increased use of GIS the aim of this article is to review the current role and limitations of GIS use in hydrology. Initially the various approaches that have been adopted already to capture the spatial characteristics of a hydrological
Les géographes, étant accusés de dilettantisme par les hydrologues, doivent réfléchir sur leur manière d'aborder l'hydrologie, et sur leurs méthodologies notamment les modèles mathématiques.
The aim of this paper is to discuss current status in spatial prediction in hydrology as related to the estimation of hydrological processes particularly in areas where a shortage of hydrometeorological data exists. Emphasis
This article reviews the current state of methodologies for simulating hydrological responses to global climate change, (global atmospheric general circulation models, GCMs). Emphasis is given to recent advances in climatic downscaling
and the problems related to the practical application of appropriate models in impact studies. Following a discussion of the advantages and deficiencies of the various approaches, challenges for the future study of the hydrological impacts of climate change
The ways of incorporation of hydrologic cycle elements into the dynamic-stochastic heat and water exchange climate model are considered. Such approach enables to identify the main sources of precipitation climatologic variability.
Climatic variation ; Drought ; Global change ; Greenhouse effect ; Hydrology ; Model ; Scale ; United Kingdom ; Water cycle ; Water resources
Changement global ; Cycle de l'eau ; Echelle ; Effet de serre ; Hydrologie ; Modèle ; Ressource en eau ; Royaume-Uni ; Sécheresse ; Variation climatique
This article examines the potential sensivity of water ressources in the UK to climatic change as exemplified by the 1988-92 drought. The representation of hydrological processes at three distinct model scales is then discussed with reference
to global hydrology, regional downscaling and catchment-scale responses. A final section speculates on future directions of research for an emerging greenhouse hydrology.
Past hydrological events related to understanding global change
Changement global ; Crue ; Datation C 14 ; Définition ; Modèle ; Monde ; Paléohydrologie ; Risque naturel ; Réchauffement climatique ; Stratigraphie
C 14 dating ; Climatic warming ; Definition ; Flood ; Global change ; Model ; Natural hazards ; Palaeohydrology ; Stratigraphy ; World
From its origins as a geological study of flood erosion and sediments the science palaeoflood hydrology matured to become an indispensable means for understanding the hydrology of very large, rare floods. Such floods are increasingly posing risks
to human habitation. More that 3 decades of research in palaeoflood hydrology produced spectacular advances in capabilities for : accurately determining palaeoflood ages; quantifying the magnitudes and dynamics of palaeoflood processes; and incorporating
palaeoflood data into various modeling procedures for risk assessments.
Hydroclimatic analysis of a carbonate island pond through the development of a hydrologic landscape unit model
Bahamas ; Carbonate rock ; Climate ; Hydrology ; Impact ; Island ; Model ; Pond ; Water resources
Bahamas ; Climat ; Etang ; Hydrologie ; Ile ; Impact ; Modèle ; Ressource en eau ; Roche carbonatée
The aim of this study is to develop a methodology that allows for an estimate of the hydroclimatic influence on an inland pond system on San Salvador, Bahamas. The methodology utilizes the Hydrologic Landscape Unit (HLU) model, a new conceptual
model. For this case study, a linear regression model was developed to empirically assess the HLU. This analysis separates tidal and climatic impacts on water levels of the pond and indicates that astronomical tides dominate, explaining 65
Hydrological response units (HRU's) as modelling entities for hydrological river basin simulation and their methodological potential for modelling complex environmental process systems. - Results from the Sieg catchment
Geographical information system ; Germany ; Hydrology ; Model ; Modelling ; North Rhine Westfalia ; Water cycle
Allemagne ; Cycle de l'eau ; Hydrologie ; Modèle ; Modélisation ; Nordrhein-Westfalen ; Système d'information géographique
L'A. présente un concept modifié des hydrological response units pour la modélisation régionale des bassins hydrologiques en utilisant le modèle PRMS/MMS. Le concept a été appliqué à un bassin hydrologique d'environ 216 km2, celui de la Bröl, dans
Dam ; Flood ; Hydraulic works ; Hydrological regime ; Riparian vegetation ; Stream ; Stream flow ; United States of America
of hydrologic shifts because of impoundment. To assess hydrologic changes associated with dams, the AA. applied a hydrologicmodel, the Indicators of Hydrologic Alteration (IHA), supplemented with orientation statistics for certain hydrograph parameters
This paper presents the analysis of pre- and post-dam hydrologic changes from dams that cover the spectrum of hydrologic and climatic regimes across the United States. The overall goals are to document the type, magnitude, and direction
. The results indicate that the major pulse of dam construction during the previous century has modified hydrologic regimes on a nationwide scale, for large and small rivers.
Long-term InHM simulations of hydrologic response and sediment transport for the R-5 catchment
Hydrology ; Model ; Oklahoma ; Pic discharge ; Runoff ; Sediment transport ; Simulation ; Soil water ; United States of America ; Watershed
Bassin-versant ; Débit de pointe ; Eau du sol ; Ecoulement ; Etats-Unis ; Hydrologie ; Modèle ; Oklahoma ; Simulation ; Transport sédimentaire
The physics-based model known as the Integrated HydrologyModel (InHM) is used to simulate continuous hydrologic response and event-based sediment transport for the R-5 catchment (Oklahoma). The hydrologic-response simulations were conducted in one
discharge rate. The results reinforce the contention that comprehensive and detailed datasets are crucial for testing physics-based hydrologic-response models.
This study demonstrates that the utility of simultaneous-equation analysis is limited for fluvial systems by inherent multicollinearity among hydrologic and morphologic variables.
Stimulation with simulation? A teaching model of hillslope hydrology for use in microcomputers
Généralités sur la géographie ; Hydrologie mathématique ; Modèle ; Pédagogie ; Simulation ; Versant
La préparation et l'utilisation d'un modèle informatisé simple de simulation de certains aspects de l'hydrologie d'un versant montagneux sont décrites dans un contexte d'enseignement. - (OP)
Global warming effects on the Hanjiang River hydrological regimes
China ; Climatic warming ; Evaporation ; Global change ; Hydrological regime ; Model ; Rill wash ; Soil moisture ; Stream ; Water resources
Changement global ; Chine ; Cours d'eau ; Evaporation ; Humidité du sol ; Modèle ; Ressource en eau ; Ruissellement ; Réchauffement climatique ; Régime hydrologique
This paper, based on a semi-conceptual hydrologicalmodel, analyses global warming effects on the Hanjiang River hydrological regimes and water resources, including soil moisture, evaporation, runoff and the transferable water quantity from
A new approach to soil characterisation for hydrology-stability analysis models
Grain size distribution ; Hydrology ; Mass movement ; Mineralogy ; Model ; Slope ; Slope dynamics ; Soil properties ; Soil water
Conductivité hydraulique ; Dynamique de versant ; Eau du sol ; Granulométrie ; Hydrologie ; Minéralogie ; Modèle ; Mouvement de masse ; Propriétés du sol ; Versant
The AA. introduce a new analytical method for determining hydraulic conductivity (K) derived from percentages of the mineralogical structure constituents. They incorporate this method within a hydrology-slope stability model structure and develop
A physics-based Integrated HydrologyModel (InHM) was employed to conduct both three- and two-dimensional (3D and 2D) hydrologic-response simulations for the small upland catchment known as C3, located within the H.J. Andrews Experimental Forest
in Oregon. Comparison of the 3D results with the 2D results clearly illustrates the importance of convergent subsurface flow. A simple infinite-slope model, driven by sub-surface pore-water pressures generated from the 3D and 2D hydrologic-response
simulations, was employed to estimate slope stability along the long-profile of the C3 hollow axis, and to study the impact of forest roads on near-surface hydrologic response and slope stability at the catchment scale.
Evapotranspiration ; Humidité du sol ; Hydrologie ; Manteau nival ; Modèle ; Méthodologie ; Précipitation ; Ressource en eau ; Télédétection
Remote sensing and hydrologicmodeling are 2 key approaches to evaluate and predict hydrology and water resources. This paper presents an overview of research efforts to combine hydrologic/land models and remote sensing products (mainly including