Channel geometry ; Colorado ; Dune ; Experimentation ; Fluvial dynamics ; River bed ; Runoff ; Spectral analysis ; Stream ; Turbulence ; United States of America
Detailed echo-sounder and acoustic Doppler velocimeter measurements are used to assess the temporal and spatial structure of turbulent flow over a mobile dune in a wide, low-gradient, alluvial reach of the GreenRiver. Based on the geometric
Assimilation ; Culturel ; Etats-Unis ; Fox River Valley ; Green Bay ; Groupe ethnique ; Géographie de l'Amérique ; Géographie historique ; Identité culturelle ; Immigration ; Intégration sociale ; Néerlandais ; Religion ; Wisconsin
An historical geography of the immigration of Dutch from the Noord-Brabant municipalities of Uden, Zeeland and Boekel to the Green Bay-Fox River Valley area of northeastern Wisconsin. The Dutch part of their heritage rapidly assimilated
Aménagement hydraulique ; Cours d'eau ; Economie de l'eau ; Etats-Unis ; Gestion ; GreenRiver ; Géographie humaine ; Kentucky ; Ressource en eau ; Simulation ; Système à buts multiples ; Utilisation de l'eau
Le système d'aménagement du GreenRiver Basin composé de quatre réservoirs a été modélisé afin de simuler son fonctionnement journalier. Le modèle d'optimisation du fonctionnement est un programme linéaire, conforme au processus de décision.
Equilibrium or indeterminate ? Where sediment budgets fail : sediment mass balance and adjustment of channel form, GreenRiver downstream from Flaming Gorge Dam, Utah and Colorado
This study examines bed and bank adjustment in the 105-km reach of the GreenRiver immediately downstream from Flaming Gorge Dam by the use of historical aerial and oblique photographs, analysis of current and abandoned stream-gaging records
, and field observations. The AA. show that the sediment budget is indeterminate and that this river segment is not degrading, but is, in fact, accumulating sediment. They also show that robust measures of channel change over long reaches better characterize
Application of the Landsat MSS tasseled CAP data in agricultural land use inventory of the Pearl River delta
The use of tasseled cap transformation produces two major variables, brightness and greenness which can be used to study the spectral development in crop growth. The use of tasseled cap variables reduces data redundancy in Landsat MSS data
Streamflow regulation and multi-level flood plain formation : channel narrowing on the aggrading GreenRiver in the eastern Uinta Mountains, Colorado and Utah
statistiques du débit journaliers. Analyse et commentaire de série de rétention de l'eau dans un bassin-versant. Utilisation des données de quatre bassins du fleuve GreenRiver (Kentucky). Calcul de la série de rétention, de son spectre de son corrélogramme
Comparison of LiDAR waveform processing methods for very shallow water bathymetry using Raman, near-infrared and green signals
, France) as an analogy to very shallow rivers. The first method is based on a combination of mathematical and heuristic methods using the green and the NIR LiDAR signals to cross validate the information delivered by each signal. The second method extracts
This paper proposes 2 new processing methods for depth extraction based on the use of different LiDAR signals [green, near-infrared (NIR), Raman] of the SHOALS-1000T sensor. They have been tested on a very shallow coastal area (Golfe du Morbihan
Crustal uplift in southern England : evidence from the river terrace records
of the Thames, these have been enhanced by additional incision in response to glacio-isostasy and valley shortening. A model is proposed in which regional uplift is recognized as the primary cause of incision by these Quaternary rivers. Possible mechanisms
Balayage laser terrestre ; Bas-fond ; Bury Green Brook ; Contrainte de cisaillement ; Cours d'eau ; England ; Géométrie hydraulique ; Haut-fond ; Hertfordshire ; Lit fluvial ; Modèle ; Modèle numérique de terrain ; Royaume-Uni ; Transport
Channel geometry ; Digital elevation model ; England ; Flat ; Hertfordshire ; Model ; River bed ; Sediment transport ; Shear stress ; Shoal ; Stream ; Terrestrial laser scanning ; United Kingdom ; Uttarakhand
exposure, protrusion and surface roughness were derived. The entrainment model results show that grains in pools have a lower critical entrainment shear stress than grains in either pool exits or riffles. Field data were collected from Bury Green Brook
This paper examines the rapidly evolving east coast of the Burdekin Delta between the main distributary mouth and the base of Cape Bowling Green spit from 1980 to 1995. The coastal evolution has been mapped and analyzed from 6 aerial surveys between
and associated major river floods, storm surges and high energy wave activity.
In this paper, ages of debris-fan are estimated from linear relation between surface age and the average depth of dissolution pits on carbonate boulders, beside the Colorado River in Grand Canyon National Park. Dissolution pits result from
a combination of weakly acidic rainfall and the metabolic activity of blue-green algae. The average depth of dissolution pits increases with relative age of fan surfaces. If not the result of differential preservation of fan surfaces, the clustering implies
Vegetation distribution pattern along altitudinal gradient in subtropical mountainous and hilly river basin, China
This paper aims to investigate the non-stationary relationship between vegetation distribution pattern and topographic and climate conditions in a moist sub-tropical rainforest of Minjiang River Basin in Fujian Province. The HJ-1 satellite image
acquired on December 9, 2010 was utilized and NDVI index was calculated representing the range of vegetation greenness. Proper analysis units were achieved through segregation based on small sub-basins and altitudinal bands. Results indicated
Feshie, in Scotland, and a second river, Bury Green Brook, dominated by finer gravel, in Hertfordshire (England). Results and discussion.
. This paper presents the use of TLS as an alternative method for collecting high-resolution 3D data from fluvial gravel surfaces, enabling the development of grain-scale Digital Terrain Models (DTMs). Application to a coarse grained gravel system, the River
When is a River not a River ? Consideration of the legal definition of a river for geomorphologists practising in New South Wales, Australia
Australia ; Concept ; Definition ; Environmental management ; Geomorphology ; Legislation ; New South Wales ; Perception ; River bed ; Stream ; Water resources
This paper examines why the definition of a river is an important and ongoing management issue, and outlines the development of legal definitions of river. Finally, the role of fluvial geomorphology is discussed with respect to the definition
of a river and its channel. This analysis will reveal whether the existing legislative framework adequately reflects the physical realities of rivers and watercourses so as to facilitate their conservation.
. However, over longer periods (> 4 weeks) nutrient-enriched rainfall promoted an increase in cyanobacterial metabolic growth measures (chlorophyll a and greenness) compared with deionised water. The results show that the magnitude and frequency of hydration
[b3] Australian Rivers Inst., Griffith University, Brisbane, Australie
significant trend toward increased drought has occurred in the American Southwest; the trend is particularly strong over the Colorado River Basin. The primary temporal variance in PDSI values is significantly related to two major teleconnections: the Pacific
[b2] Dep. of geography and Geology Western Kentucky, Univ., Bowling Green, Etats-Unis
Sedimentatieverschijnselen nabij een rivier stuw op de Markrivier Sedimentation phenomena near a river dam on the river Mark
To alter the natural river behaviour, many regulation projects have been carried out on various river systems. However, until now very few studies on the reactions of the rivers to the imposed regulating systems have been undertaken. - (Author).
Channel geometry ; China ; Fluvial dynamics ; Fluvial processes ; Meander ; Model ; River bed ; Statistics ; Stream ; Stream flow
Since the anabranched river pattern is the most typical one in the middle and lower reaches of the Yangtze River (Changjiang) as well as in many other rivers in China, a systematic study on the formation cause of the anabranched river pattern has
been made in recent years, including field observations, modeling experiments in four river models under different boundary conditions, the analyses of river pattern formation and transformation etc. In this paper, some of the detailed results obtained