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Résultats de la recherche (8 résultats)

Soil shear strength : its measurement and soil detachability

Experimental results of soil shear strength measurements using different instruments : a drop-cone penetrometer, a laboratory vane apparatus and a pochet vane apparatus. The main differences in splash detachment relations seem to depend

From weather vanes to satellites. An introduction to meteorology.

From weather vanes to satellites. An introduction to meteorology.

Threshold conditions for rill initiation on a vertisol, Gunnedah, N.S.W., Australia

This paper reports the use of a hand held shear vane (a technique that can easily be applied in the field) to examine the relationship between soil strength and rill initiation for a strongly aggregated vertisol.

Interactions between airflow and valley topography with implications for aeolian sediment transport

This paper investigates the impacts of dryland valley topography on wind speed and direction in order to understand better the effects of a valley on aeolian sediment dynamics. Anemometers and wind vanes were used to measure airflow characteristics

Gully erosion in the loam belt of Belgium : typology and control measures

and partly also rill erosion, knowledge of the thickness and of the resistance properties of soil sublayers in areas where overland concentrates seem to be crucial for gully risk assessment. Results from this study indicate that vane shear strength

Soil organic carbon enrichment of dust emissions : magnitude, mechanisms and its implications for the carbon cycle

This study examines the SOC content and enrichment of dust emissions measured using Big Spring Number Eight (BSNE) wind-vane samplers across 5 land types in the rangelands of western Queensland, Australia. The results show that sandy soils and finer

The influence of topography and approach angles on local deflections of airflow within a coastal blowout

This study examines the spatial variability of the wind field in a linear blowout in coastal dunes at Jockey's Ridge State Park, on the Outer Banks of North Carolina. A spatial array of single-height anemometers and wind vanes were placed within

Hydraulic, physical and rheological characteristics of rain-triggered lahars at Semeru volcano, Indonesia

using a laboratory vane rheometer. Results suggest a purely frictional behaviour. Importantly, and contrary to previous experiments conducted with monodisperse suspensions, these results do not show any transition towards a viscous behaviour for high