Vertikale Profile des Windvektors und des Turbulenzkoeffizienten in einer (quasistationären) planetarischen Grenzschicht mit freier Inversion. (Verticalprofiles of the wind vector and the turbulence coefficient in a (quasi-stationary) planetary
Atmosphère ; Coefficient de turbulence ; Couche limite ; Dynamique de l'atmosphère ; Géographie physique ; Profilvertical ; Stabilité verticale ; Turbulence ; Vecteur du vent ; Vent
Verticalprofiles of the wind vector and the turbulent coefficient (eddy viscosity) are discussed. Further empirically determined (observed) verticalprofiles (especially of the turbulent coefficient) are compared with corresponding vertical
Verticalprofiles of the horizontal mass flux of blown sand are investigated experimentally using a passive vertical array in a wind tunnel. This investigation is complemented by the measurements of the longitudinal profiles of mass flux using
a horizontal sand trap. The experiments were conducted with 2 test sands and 5 different stream velocities. A simple equation applicable for both the vertical and the longitudinal sand mass flux variations is introduced and the parameters are estimated from
Geomorphological evolution of longitudinal river profiles in the Carpathians
Carpates ; Concavité ; Cours d'eau ; Géométrie hydraulique ; Modèle mathématique ; Montagne ; Mouvement vertical ; Profil longitudinal ; Roumanie ; Réseau de drainage ; Tectonique
Carpathian Mountains ; Channel geometry ; Drainage network ; Longitudinal section ; Mathematical model ; Mountain ; Romania ; Stream ; Tectonics ; Vertical movement
In this paper, attention is focused on the concavity of the stream profile. On this basis, the AA. tried to determine the evolution of some Eastern Carpathian rivers of Romania and thus estimate their long-term evolutionary tendencies
. They demonstrate that age has no influence on the form of the longitudinal profiles for the rivers on the exterior side of the Carpathians. This is because tectonic uplift was important, and this phenomenon is still present today.
Windprofile in der unteren Troposphäre nach Feinauswertung primärer Radiosondendaten. (Wind profiles in the lower troposphere obtained from a precision evaluation of primary radiosonde data)
This paper is concerned with the estimation of the errors of vertical wind profiles which are based on a rather detailed evaluation of routine radiosonde ascents. Errors occuring in determining wind direction, wind speed, and height are discussed
Coastal environment ; Eustatism ; Japan ; Longitudinal section ; Marine erosion ; Marine terrace ; Numerical model ; Quaternary ; Sea level ; Shikoku ; Simulation ; Tectonics ; Valley ; Vertical movement
surface with upwardly convex profiles in downstream reaches. Numerical simulations were conducted to investigate the development of longitudinal profiles of the valleys under the influence of baselevel change and marine erosion. The profiles obtained from
the calculation fit quite closely to actual valley profiles, which demonstrate the validity of the equation.
Regional analysis of bedrock stream long profiles : evaluation of Hack's SL form, and formulation and assessment of an alternative (the DS form)
Australie ; Cours d'eau ; Lithologie ; Modèle ; Mouvement vertical ; New South Wales ; Pente de versant ; Profil longitudinal ; Tectonique
Australia ; Lithology ; Longitudinal section ; Model ; New South Wales ; Slope gradient ; Stream ; Tectonics ; Vertical movement
The Hack SL form of the long profile, which describes a straight line on a log-normal plot of elevation (normal) versus distance (logarithmic), is the equilibrium long profile form that has been most widely used in such studies. The AA. show
that the SL form is a special case of a more general form of the equilibrium long profile (here called the DS form) that can be derived from the power relationship between stream discharge and downstream distance, and the dependence of stream incision
on stream power. The DS form provides a better fit than the SL form to river long profiles in an intraplate setting in southeastern Australia experiencing low rate of denudation and mild surface uplift.
Cours d'eau ; Etats-Unis ; Géomorphométrie ; Lithologie ; Mouvement vertical ; Oregon ; Profil longitudinal ; Tectonique
Geomorphometry ; Lithology ; Longitudinal section ; Oregon ; Stream ; Tectonics ; United States ; Vertical displacement;Vertical movement
This paper presents the results of examining some aspects of river morphometry in Western Oregon to better understand the geologically recent history of Pacific-plate subduction. Changes in long profile, gradient, gradient index, pseudo-hypsometric
Implications of the saltation-abrasion bedrock incision model for steady-state river longitudinal profile relief and concavity
Capacité de charge ; Contrainte de cisaillement ; Cours d'eau ; Erosion fluviatile ; Granulométrie ; Modèle ; Mouvement vertical ; Profil longitudinal
Carrying capacity ; Fluvial erosion ; Grain size distribution ; Longitudinal section ; Model ; Shear stress ; Stream ; Vertical movement
Here, the AA. use the saltation-abrasion model to generate a large suite of predicted steady-state river profiles, in order to evaluate the relative influence of each of the key variables (discharge, grain size, sediment supply, rock uplift rate
and rock strength) in controlling profile concavity and profile relief. They conclude by considering some of the possible covariation of these key variables, in particular the likely dependence of grain size on both rock uplift rate and rock strength.
Altai Mountains ; Amur River ; Caucasus ; Channel geometry ; Fluvial dynamics ; Horizontal movement ; Longitudinal section ; Mountain ; River bed ; Russia ; Stream ; Vertical movement ; Zonality
Profil longitunal et déformations verticales des lits. Types de processus fluviaux et leur zonalité verticale. Types morphodynamiques de lits et déformations horizontales des lits. Equations des profils d'équilibre.
Vertical porosity profile of a clay-rich marsh soil
The vertical distribution of porosity throughout a clay-rich marsh soil profile was studied in a grassland field with samples taken from the soil surface characterized by water contents near their shrinkage limit down to 2.00 m deep saturated
of the Flandrian sediment in the development of the structural profiles of marsh soils.
Channel geometry ; Lithology ; Longitudinal section ; Mountain ; Oregon ; Stream ; Tectonics ; United States of America ; Vertical movement
Relationships between riverbed morphology, concavity, rock type and rock uplift rate are examined to independently unravel the contribution of along-strike variations in lithology and rates of vertical deformation to the topographic relief
of the Oregon coastal mountains. Lithologic control on river profile form is reflected by convexities and knickpoints in a number of longitudinal profiles and by general trends of concavity as a function of lithology. A key result from this analysis
is that the rock resistance signal seen in hillslopes is a key control, and more important than rates of rock uplift in some cases, on the river profile and topographic relief.
and verticalprofile variations and to define wave thresholds for important morphological changes. Results show that the active zone of the profile lies between 5 m above and 10.4 m below mean sea level. Based on the pattern of vertical variability, the AA
. divided the profile into 4 cross-shore sectors and calculated thresholds for significant wave height generating important morphological changes in each sector.
Testing the tectonic significance of some parameters of longitudinal river profiles : the case of the Ardenne (Belgium, NW Europe)
Analyse des groupes ; Ardenne ; Base de données ; Belgique ; Capacité de charge ; Cours d'eau ; Débit ; Hydrodynamique ; Mouvement vertical ; Profil longitudinal ; Tectonique
Ardenne ; Belgium ; Carrying capacity ; Cluster analysis ; Data base ; Discharge ; Hydrodynamics ; Longitudinal section ; Stream ; Tectonics ; Vertical movement
The longitudinal profiles of 24 rivers of 3rd to 5th order have been analyzed in order to recognize the regional tectonic differentiation pattern of the Ardenne, a Paleozoic massif of NW Europe. Data collected exclusively from 1/25,000 topographic
maps were used to define a set of parameters related to the geometry of the profile and proxies for river bedload and drainage area. The combined analysis of all the parameters confirms the current uplift of the NE Ardenne and points to a subsidence
Vertical structure of the thermal belt in the western slope of Mt. Tsukuba : an observational study on 10-11 December, 2004
In this study, a combination of vertical air temperature profile observations and thermography observation was made to give a total view of the thermal belt formation in Mt. Tsukuba. Discussion of the results.
California ; Canyon ; Crétacé ; Cénozoïque ; Etats-Unis ; Mouvement vertical ; Mésozoïque ; Paléogéographie ; Profil longitudinal ; Sierra Nevada ; Tectonique ; Vitesse d'érosion
California ; Canyon ; Cenozoic ; Cretaceous ; Erosion rate ; Longitudinal section ; Mesozoic ; Palaeogeography ; Sierra Nevada ; Tectonics ; United States of America ; Vertical movement
Author challenges the common wisdom that the world's great ranges, including the Sierra Nevada, experienced major uplift in late-Cenozoic time. Three independent methods (longitudinal profiles of canyon-bottom flows and deposits, weathering rates
Profils longitudinaux des cours d'eau et tectonique : l'exemple du bassin de l'Aumance (Massif central, France)
Aumance ; Bassin-versant ; Cours d'eau ; France ; Géochronologie ; Géomorphométrie ; Horst ; Lithologie ; Massif Central ; Minéraux lourds ; Mouvement vertical ; Profil longitudinal ; Tectonique ; Terrasse fluviatile
Fluvial terrace ; France ; Geochronology ; Geomorphometry ; Heavy minerals ; Horst ; Lithology ; Longitudinal section ; Massif Central ; Stream ; Tectonics ; Vertical movement ; Watershed
L'A. a utilisé l'analyse morphométrique pour évaluer les différences régionales de la dissection fluviatile et repérer les ruptures de pentes dans les profils longitudinaux des cours d'eau dans le bassin versant de l'Aumance. Dans ce bassin