Evolution of the Bonneville shoreline scarp in west-central Utah : comparison of scarp-analysis methods and implications for the diffusion model of hillslope evolution
The purpose of this study was to further examine the influence of scarp height, texture and microclimate in an attempt to calibrate a nonlinear model of scarp evolution. To do this, over 150 profiles of the Bonneville shoreline in the adjacent Snake
and Tule Valleys, west-central Utah were collected and analysed by fitting the entire scarp profile to diffusion-equation solutions, taking into account uncertainty in the initial scarp angle. In contrast to previous studies, this analysis revealed
Physical modelling of fault scarp degradation under freeze-thaw cycles
Basse-Normandie ; Creep ; Debris flow ; Erosion ; Fault scarp ; France ; Freeze-thaw cycle ; Gelifluction ; Model ; Periglacial features ; Quaternary
Physical modelling has been developed in order to simulate the effects of periglacial erosion processes on the degradation of slopes and scarps. Data from 41 experimental freeze-thaw cycles are presented. They attest to the efficiency of periglacial
processes that control both erosion and changes in scarp morphology. The experimental results are consistent with field data acquired along the La Hague fault scarp (Normandy, France). These results show that moist periglacial erosion processes could lead
in longitudinal profile. In the eastern section, the scarp is lower, inclined more gently and lacking in continuous rock cliffs. The strength of sandstone in the western section, determined using a Schmidt hammer, is greater, thereby accounting for the steepness
of slopes. Differences in groundwater outflow between adjacent sections of the escarpment result in spatially non-uniform erosion of the scarp itself and its foreland, causing the disappearance of the lowest morphostructural horizon in the northern part
Characteritics badlands are incised into Plio-Pleistocene clays in Basilicata, creating steep, scarp slopes with knife-edge ridges (calanchi) and small dome-shaped forms (biancanes). This paper presents results from a 1997-2003 study into the rates
in the context of pediment development and associated scarp retreat.
The AA. reconsider features described as neotectonic in origin, especially the correspondence between these features, the distribution and characteristics of seismic activity, and the local morphology (fault scarps, hydrographic markers). The AA
In this paper, kinematical analysis of frontal anticlines and spatial mapping of active faults based on geomorphological features such as drainage pattern development, fault scarps and uplifted Quaternary alluvial fans are presented. The AA. analyse
fluvio-lacustre superficiels sont observés dans le sud-ouest de la plaine maritime, dans le bassin de Saint-Omer (Aa) et dans la vallée de l'ancienne Scarpe. Ils ont en commun un âge holocène subatlantique, antérieur et contemporain de l'époque romaine.