Ohio ; Tunnel ; United States of America ; Urban area ; Urban history
A bit of urban historical geography is revealed below ground level in Cincinnati, Ohio, where the A. examined a 3-km tunnel built for a subway that was never completed. It now carries a water main. - (DWG)
The use of topographic scale models in predicting eolian dust erosion in hilly areas: field verification of a wind tunnel experiment
Eolian erosion of natural dust in an area of 53 ha, situated in the northern Negev Desert, is investigated both in the wind tunnel (erosion simulations on a topographic scale model) and in the field. The wind tunnel results and the field results
show good agreement, indicating that wind tunnel simulations of eolian dust erosion on scale models of complex topography may predict, at least to an acceptable level, the erosion-sensitive areas in a hilly landscape of nearly uniform surface roughness.
Conséquences du tunnel sous la Manche sur les flux de circulation et le développement régional en Europe
Développement régional ; Economie régionale ; Europe ; Flux ; Modèle ; Politique des transports ; Transport ; Tunnel
Europe ; Flow ; Model ; Regional development ; Regional economy ; Transport ; Transport policy ; Tunnel
Le tunnel n'a pas forcément entraîné, au moins dans les régions très industrialisées d'Europe, une croissance économique dans toutes les régions voisines. Cependant, le tunnel, en tant qu'élément clef de la nouvelle infrastructure de transport en
The aim of this study is to investigate the physical effects of rock fragment eccentricity on the dust deposition mechanism. This was examined in a wind tunnel. All data in this study refer to intial dust deposition (not accumulation), since only
Tunnel channels and associated landforms, south-central Ontario: their implications for ice-sheet hydrology
observations faites dans la région sud-centrale de l'Ontario. 3 formes de terrain y sont décrites: des chenaux-tunnels, des mégachenaux et des figures d'affouillement créées durant le stade tardif de la nappe d'écoulement des eaux de fonte. Elles sont
Bagnold was the first to change the study of aeolian sand transport and sand dunes from descriptive to processes orientated. His book combines unique field observations in remote desert areas, with wind tunnel simulation experiments and physical
A portable wind tunnel is used to assess the erodibility of prepared surfaces of residue waste. The data are extensive and include wind profiles, collections of saltation and suspension material as well as particle sizing by elutriation. Still
The route finally adopted as the Tokaido Railway was conclusively determined by conditions of civil engineering, such as gradient, numbers of tunnels and bridges, and other geomorphological factors, in spite of various movements by regional
The effect of rock fragment cover on the deposition of airborne dust was examined in a wind tunnel. Four parameters were studied: pebble size, pebble flattening, cover density and wind speed. The effect of these parameters on the deposition of dust