Accessibility ; France ; Multi-agent system ; Simulation ; Spatial interaction ; Urban area ; Urban dynamics ; Urban network ; Urban system
This article analyses the theoretical principles in interurban simulation models. To this end, it compares models made of systems of differential equations multi-agent models designed to simulating the differentiated dynamics of urban entities over
Helga's Dune : 40 years of dune dynamics in the Namib Desert
The dynamics of a small linear dune on the northern margin of the Namib Sand Sea, in the area south of Gobabeb, have been monitored using erosion pins placed at the dune tip since 1969. GPS measurements of these pins enabled estimation of the rates
behavior appear to be related to changes in wind regime and the vegetation cover of the interdune area, as a result of increased rainfall in recent years. This study demonstrates the dynamic nature of the tip of this dune and its sensitivity to changes
Georgia (USA) ; Hydrology ; Landslide ; Mass movement ; Model ; Slope dynamics ; Soil water ; Topography ; United States of America ; Watershed
topography affects the location and spatial pattern of slip surface development and pore pressure dynamics. They use a 3D Darcy-Richards equation solver (Hydrus 3-D) combined with a cellular automata slope stability model to simulate the spatial propagation
of the destabilized area. The results showed that the soil-bedrock interface and in particular, bedrock depressions, played a key role in pore pressure dynamics, acting as an impedance for the downslope drainage of perched water. This work suggests that landslide
Land abandonment and the dynamics of agricultural landscapes in Mediterranean mountain environments : the case of Ribagorça (Spanish Pyrenees)
Agricultural land use ; Agricultural landscape ; Land use ; Land utilisation ; Landscape ; Landscape dynamics ; Nineteenth Century ; Pyrénées ; Spain ; Twentieth Century
Depending on their behaviour during extreme floods, streams can be divided into 2 distinct classes, which derive from a simple threshold model of transport dynamics. Flood-cleaning streams erode during high flows and deposit during small and medium
, Switzerland, and its implications for channel dynamics and bedrock erosion are discussed.
The distribution, thermal characteristics and dynamics of permafrost in Tröllaskagi, Northern Iceland, as inferred from the distribution of rock glaciers and ice-cored moraines
from moderate-resolution imaging spectroradiometer satellite data (MODIS; 2003–10) and field mapping to re-examine the permafrost distribution, thermal characteristics and dynamics on the Tröllaskagi peninsula. An inventory of 265 landforms, mostly