Applied hydrology ; Experimental catchment ; Impact ; Model ; Oregon ; Simulation ; Slope dynamics ; Subsurface flow ; United States of America ; Watershed
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-surfacehydrologic response and slope stability at the catchment scale.
A physics-based Integrated Hydrology Model (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
Properties of surface crusts of an andisol and their effects on soil-hydrological processes
Soil surface sealing and crusting
Andosol ; Eau du sol ; Encroûtement ; Erodabilité ; Honshū ; Infiltration ; Japon ; Microstructure ; Propriétés du sol ; Précipitation ; Simulation de pluie ; Sol
In this study, changes in the structure and physical properties of the surface crust of an Andisol, especially during the rainfall, were measured by using a rainfall simulator, and effects of surface crust on hydrology and soil erodibility
Macropore flow on a reclaimed surface mine : infiltration and hillslope hydrology
Bassin-versant ; Erosion des sols ; Etats-Unis ; Hydrologie ; Infiltration ; Mine ; Mise en valeur ; Pennsylvania ; Propriétés du sol ; Ruissellement
Hydrology ; Infiltration ; Land development ; Mine ; Pennsylvania ; Rill wash ; Soil erosion ; Soil properties ; United States of America ; Watershed
Surface coal mining in central Pennsylvania alters the physical and hydrological properties of soil erosion from its undisturbed state and changes the surfacehydrologic response to precipitation. Newly reclaimed minesoils exhibit low, steady-state
rates of infiltration and produce runoff dominated by infiltration excess overland flow. The objective of this study is to investigate the effect of minesoil macropores on infiltration, throughflow, and return flow on a surface-mined watershed. A second
objective is to examine the changes that occured in surface storm runoff hydrographs as rates of infiltration changed through time.
Années 2000 ; Bibliographie ; Calotte glaciaire ; Changement climatique ; Drainage ; Dynamique glaciaire ; Eau de fonte ; Eau desurface ; Glacier ; Groenland ; Hydrologie ; Niveau marin ; Proglaciaire ; Réchauffement climatique ; Région polaire
Bibliography ; Climatic change ; Climatic warming ; Drainage ; Glacier ; Glacier dynamics ; Greenland ; Hydrology ; Ice sheet ; Meltwater ; Polar region ; Proglacial features ; Sea level ; Surface water ; The 2000's
Agua de deshielo ; Agua de superficie ; Bibliografía ; Cambio climático ; Casquete glaciar ; Dinámica glaciar ; Drenaje ; Groenlandia ; Helero ; Hidrología ; Nivel del mar ; Proglaciar ; Recalentamiento climático ; Región polar
This review provides the current state of knowledge on Greenland ice sheet (GrIS) surface water hydrology, following ice sheet surface meltwater production and transport via supra-, en-, sub-, and proglacial processes to final meltwater export
to the ocean. With continued efforts targeting both process-level and systems analysis of the hydrologic system, the larger picture of how future changes in Greenland hydrology will affect ice sheet glacier dynamics and ultimately global sea level rise can
Cartographie thématique ; Domaine aride ; Généralités sur la géographie ; Hydrologie ; Kenya ; Menengai District ; Réseau de drainage ; SPOT ; Télédétection
Three principal aims are pursued in this paper : 1) assessment of the accuracy of SPOT imagery in mapping drainage networks and bodies of surface water| 2) specifying which type of SPOT image is most useful for this purpose| and 3) specifying
the season of the year in which SPOT imagery gives maximum hydrologic information i.e. assessment of SPOT for multitemporal hydrologic mapping.
Azov mer ; Caspienne ; Cours d'eau ; Eau desurface ; Gestion de l'eau ; Hydrologie appliquée ; Modèle stochastique ; Méthode de Monte Carlo ; Niveau marin ; Régime hydrologique
Applied hydrology ; Azov Sea ; Caspienne Sea ; Hydrological regime ; Monte Carlo analysis ; Sea level ; Stochastic model ; Stream ; Surface water ; Water management
Régime hydrologique des cours d'eau. Régime hydrologique des bassins internes. Gestion du régime des eaux desurface. Les autres questions.
Extreme discharge ; Fluvial processes ; Hydrology ; Meltwater ; Precipitation ; River bed ; Runoff ; Stream flow ; United States of America
This paper assesses how the form of the spring-dominated channels differs as a consequence of distinctive hydrology. In addition, the AA. examine in more detail the hydrology of such springfed systems. They compare spring-dominated alluvial streams
and alluvial streams whose runoff is derived from snowmelt or rainfall directly, runoff dominated streams. The term is meant to include surface runoff and subsurface runoff.
Arid area ; China ; Desert ; Groundwater ; Holocene ; Hydrochemistry ; Inner Mongolia ; Lake ; Palaeo-environment ; Palaeoclimatology ; Palaeohydrology ; Surface water
Using the area of Yabulai Mpountains, as an example, this paper provides insight into the chemistry of ground and surface water in western Inner Mongolia. The recharge mechanisms of groundwater and the hydrological evolution in this region during
Etude des variations spatio-temporelles des précipitations, des écoulements desurface, des ressources en eau souterraine et des implications pour l'agriculture.
Slope form, erosion, and hydrology in some belizean karst depressions
Ablation spécifique ; Belize ; Dynamique de versant ; Ecoulement ; Géographie de l'Amérique ; Hydrologie ; Karst ; Vitesse d'érosion ; Zone intertropicale
Relevé détaillé des versants dans sept dépressions karstiques du Belize : étude géomorphométrique, ablation spécifique, précipitations, écoulement desurface et hypodermique, dureté de l'eau.
This paper provides a review and a synthesis of the work done between 1981 and 1995: detailed studies of surface velocity, glacier hydrology and ice dynamics. Small glaciers, such as Storglaciären, are not as sluggish as may be expected but exhibit
The role of soil surface conditions in regulating runoff and erosion processes on a metamorphic hillslope (Southern Spain) : soil surface conditions, runoff and erosion in Southern Spain
Andalucía ; Domaine méditerranéen ; Ecoulement ; Erosion hydrique ; Espagne ; Montagne ; Parcelle expérimentale ; Propriétés du sol ; Simulation de pluie ; Versant ; Végétation
Campo mediterráneo ; Erosión hídrica ; Escorrentía ; Montaña ; Parcela experimental ; Propiedades del suelo ; Simulacíon de lluvia ; Vegetación ; Vertiente
The AA. present the results of an analysis into the role of soil surface conditions in the regulation of soil hydrology and erosive processes at one hillslope under dry Mediterranean climatic conditions. It is showed the existence of a complex eco
-geomorphological system composed of a multitude of vegetation patches distributed at random on the hillslope, and where the presence of different surface conditions on the soil can have a sizeable influence on hydrological and erosive behavior. From
the hydrological point of view, the runoff generation mechanisms follow a seasonal pattern depending on the moisture of the soil with a different spatial condition, with frequent hydrological disconnections between parts of the hillslope. Soil surface rock
fragments, the layout of tussocks intra-hillslope and previous soil moisture as dynamic control factors in the hydrological and erosive processes are all important.
Le modèle couplé. Simulation conjointe des écoulements desurface et des écoulements souterrains sur un système hydrologique. (A coupled model. Simultaneous simulation of surface flows and groundwater flows in an hydrological system)
Analyse de système ; Bassin-versant ; Cours d'eau ; Eau souterraine ; Ecoulement ; Ecoulement souterrain ; Géographie physique ; Hydrodynamique ; Hydrologie mathématique ; Modèle déterministe ; Simulation ; Système ; Système hydrologique
Le modèle présenté a pour objectif la simulation conjointe des écoulements desurface et des écoulements souterrains sur un bassin hydrologique. Il s'agit d'un modèle déterministe à discrétisation spatiale dont la conception dérive d'un modèle
souterrain à mailles carrées emboitées et d'un modèle desurface à mailles carrées déjà testées séparément sur de nombreux bassins. Deux exemples d'application sont donnés sur des bassins français (Haute Lys et Caramy-Ver). (RF).
Surface and subsurface flow from a Natal coastal catchment in Proceedings.
Afrique du Sud ; Bassin-versant ; Charge dissoute ; Débit ; Ecoulement ; Ecoulement hypodermique ; Expérimentation ; Géographie de l'Afrique ; Natal
A system was installed to collect surface and subsurface flow components from experimental plots under grassland. Subsurface flow and soil removal were found to be substantial.
DE VILLIERS, G. du T.
Rhodes University, Hydrological Research Unit, Afrique du Sud
A contour-based topographic model for hydrological and ecological applications
Présentation et discussion de trois exemples d'application de ce modèle numérique : pour les prévisions des zones de saturation en surface, de la répartition de la radiation solaire quotidienne, des zones d'érosion et dépôt dans un bassin-versant.
The human role in earth surface systems : some theoretical considerations
Action anthropique ; Analyse de système ; Environnement ; Espace-temps ; Hydrologie mathématique ; Relation homme-environnement ; Système
Environment ; Human impact ; Man-environment relationship ; Mathematical hydrology ; Space time ; System ; System analysis
The A. shows that the consideration of human influences as exogenous or endogenous to earth surface systems can affect, or even predetermine, the outcome of analyses. This is demonstated via qualitative stability analyses of generalized mass
Surface stone cover on desert hillslopes; Parameterizing characteristics relevant to infiltration and surface runoff
Australie ; Couverture de pierres ; Domaine aride ; Erosion des sols ; Granulométrie ; Infiltration ; New South Wales ; Ruissellement ; Splash ; Statistique ; Versant
This paper seeks to examine the issues involved in making more appropriate descriptions of surface stone cover, using a desert field site as the test case. The problem of description and parameterization is considered in the context of the erosional
and hydrologic functioning of hillslopes carrying surficial stones.
Field monitoring of surface and subsurface runoff on a slope in a loamy region
Belgique ; Erosion des sols ; Géographie physique ; Limon ; Méthodologie ; Ruissellement ; Versant
. In order to evaluate the hydrological processes and the soil erosion mechanisms in short time interval, a field study was started on surface and subsurface waterflow processes on a sloping field (16 %) under conventional tillage. Describes briefly
The unsaturated-saturated waterflow processes in the upper zone of the soil are considered to play an important role in the mechanisms of surface runoff and soil erosion, but there is still a lack of theoretical and experimental understanding
the experimental set-up and the methodology used for monitoring the surface and subsurface runoff processes on an experimental field in the Belgian loamy region. - (Authors).