The AA. believe that in modelling hillslope processes, a combination of both theoretical and experimental approaches is needed as illustrated by several examples from the Louven laboratory.
Factors influencing structural landform dynamics on the Colorado Plateau about the necessity of calibrating theoreticalmodels by empirical data in Geomorphological models. Theoretical and empirical aspects.
Process-response models of denudation at different spatial scales in Geomorphological models. Theoretical and empirical aspects.
Analyse spatio-temporelle ; Bilan de masse ; Dénudation ; Erosion des sols ; Géographie physique ; Modèle ; Météorisation ; Ruissellement ; Versant
In this paper, one theoreticalmodel program SLOP 3 D, which is based on the mass balance concept, is applied to geomorphological problems at very different spatial and temporal scales.
This paper contains theoretical considerations concerning the causes and location of the formation of glaciotectonic deformations by inland ice in the substratum. These considerations are based on a theory of rock and soil mechanics as well
are distinguished and a model of their formation is presented. (L'A.).
The purpose of this paper is to develop a simple mathematical model of ground flow so as to permit computing the long term steady state flow in rivers as the runoff component of the hydrological cycle.
La recherche quantitative au Royaume-Uni est envisagée sous cinq aspects: analyse statistique multivariée, création de modèles stochastiques, modèles mathématiques, cartographie, évaluation.
The gravity model and hierarchical spatial systems: theoretical and empirical observations
Le modèle de gravité postule que le volume d'interaction entre deux lieux sera relié aux masses de population de deux lieux et inversement relié à leur distance. (ALS).
Concept ; Forecast;Prediction ; Geographical information system ; Geomorphology ; Geosystem ; Methodology ; Model ; Statistics
The purpose of this paper is to formally outline some fundamental theoretical and methodological promises of geomorphological forecasting. It is shown that there is a conceptual link between field studies of spatial structures and landscape
The transport response function and relaxation time in geomorphic modelling in Geomorphological models. Theoretical and empirical aspects.
Fluviatile ; Géographie physique ; Géomorphodynamique ; Hydrodynamique ; Littoral ; Modèle ; Temps de réponse ; Transport sédimentaire
A technique is described for the representation of stability in non-linear geomorphic models. The difference between iterative and analytical feedback modelling is emphasised and considered in terms of the mass continuity equation. Two examples
Revue des théories de la crise économique. Critique. Importance des facteurs locaux. Modèle reliant le changement technologique et les taux d'accumulation et d'emploi.
Présente un modèle d'abrasion complètement opposé à celui de Boulton, puisqu'il élimine l'influence de la pression normale. L'abrasion ne serait influencée que par la vitesse des particules, et aussi leur poids lorsqu'elles seraient de taille
Connaissance ; Crue ; Europe ; Gestion du risque ; Hydrologie appliquée ; Lutte contre les inondations ; Modèle ; Prévision ; Théorie
Applied hydrology ; Europe ; Flood ; Flood control ; Forecast ; Knowledge ; Model ; Risk management ; Theory
Here, the AA. advocate an approach that is knowledge-theoretic rather than data-theoretic, to capture the much richer sources of knowledge available to the modeller. These sources include third-party reports, personal recollections and diaries, old
photographs and press articles, opinions, etc, which are, by convention, either excluded from analysis, or simply added into descriptions of model results at the point of dissemination and consultation of model findings. They conclude by noting
that this approach to hydrological modelling fits into current thinking that the process by which publics engage with knowledge must be moved upstream. Here, the production of scientific knowledge comes to include not just scientists and specialists, but also those
people for whom model predictions make a material difference.