Biogéomorphologie ; Cours d'eau ; Erosion des berges ; Etats-Unis ; Géométrie hydraulique ; Impact ; Mousse ; ThompsonCreek ; Virginia ; Végétation ; Végétation ripicole
This project evaluated the rate of bank erosion and effectiveness of mosses as a factor in reducing bank erosion in ThompsonCreek, Virginia. The ThompsonCreek watershed is dominated by non-cohesive sandy strata and a thick canopy cover. Field
. In general, erosion rates appear to be high in ThompsonCreek. The dominant processes of bank erosion are undercutting and bank collapse. However, the majority of moss-covered sites remained intact during the study period. The results of field investigations
Creek enlargement in a low-energy degrading saltmarsh in southern England
Cantilever ; Channel geometry ; Coastal environment ; England ; Erosion rate ; Estuary ; Hampshire ; Hydrodynamics ; Intertidal zone ; Riparian vegetation ; Salt marsh ; Tidal creek ; Tide ; United Kingdom
A low-energy saltmarsh in the Beaulieu River Estuary, southern England was investigated. A geomorphological survey revealed that the creek bank geometry was characterized by the presence of cantilevers, a result of the protection provided by roots
insufficient to cause erosion of the bank surface. However, pin measurements over a 2-year period revealed that the tidal creeks within the saltmarsh did experience bank erosion, particularly below the cantilevers, in spite of this low-energy setting. Bank face
Sediment-sorting processes related to varying channel-bed morphology were investigated from April to November 1993 along a 1-km pool-riffle and step-pool reach of North Saint Vrain Creek, a small mountain stream in the Rocky Mountains of northern
To investigate the influence of pool elongation on turbulence production and energy slope, a flume experiment was conducted with a pool geometry that was loosely based on a 0.10 scale model of a forced pool from North Saint Vrain Creek, Colorado
polliniques, datation au radiocarbone et datations archéologiques. A l'aide de ces méthodes, l'évaluation des périodes de retour de quelques inondations catastrophiques, survenues aux Etats-Unis, donne: Thompson River, Co. (1976), période de retour 5000ans
| Klamath River, Ca. (1964) 100ans| Western Run Md. (1972) 2100ans| Elm Creek, Tx. (1972) 400ans.
Erosion rates over millennial and decadal timescales at Caspar Creek and Redwood Creek, Northern California Coast Ranges
Detailed measurements of sediment fluxes in the Northern California Coast ranges at Caspar Creek and Redwood Creek have provided estimates of physical erosion rates since 1963 and 1971, respectively. They used cosmogenic Be 10 to measure millennial
-scale denudation rates averaged over 1400-8700 years at 6 catchments in Caspar Creek and 4 catchments in Redwood Creek. These measurements suggest that denudation rates at Caspar Creek are slower than rock uplift rates, implying that Caspar Creek
Creek morphology in the Sceldtpolders near Zelzate
Several creeks with different morphological and landscape characteristics occur in the Sceldtpolders area near the polderlimit between Zelzate and Aardenburg. In this paper diverse fossil creektypes, creeksediments and creekpatterns are discussed
. An orthogonal creek pattern can be reconstructed by detailed geomorphological mapping. The relation is examined between this exceptional creekpattern and the underlying fossil parcelpattern.
Three-dimensional velocities and turbulence intensities were measured with an acoustic Doppler velocimeter at 222 different points at 3 similar flows within a large pool-riffle unit on North Saint Vrain Creek, Colorado. Sediment-sorting patterns
The aim of this paper is to determine processes and volumes of riverbank erosion at a catchment scale (Lockyer Creek Catchment in southeast Queensland). Remotely sensed data captured before and after an extreme flood event, enabled a digital
Late Quaternary alluvial history of Nowlands Creek, Hunter Valley, NSW
The purpose of this paper is to unravel the alluvial history of Nowlands Creek at the archaeological sites. In particular, the river terraces and their stratigraphy, soils and chronology will be evaluated to separate Pleistocene from Holocene
British Columbia ; Canada ; Coulée de blocs ; Géographie de l'Amérique ; Géomorphodynamique ; Holocène ; Mouvement de masse ; Quaternaire ; Stratigraphie ; Texas Creek ; Versant
Glaciotectonism and landsliding in Little Sandhill Creek, Alberta
This paper deals with a landslide on the north side of Little Sandhill Creek (Dinosaur Provincial Park). The slide was studied intensively because it contained several large stratigraphic exposures which provided clear indications of the effects
Analyse de 3 échantillons de 20 bassins-versants pour tester l'hypothèse que les termes de: creek, run et hollow s'appliquent à des cours d'eau ayant une taille et une vitesse d'écoulement différentes. Une analyse de variance et le test de Scheffé
Pre-impact conditions and cratering processes at the Flynn Creek Crater, Tennessee in Impact and explosion cratering. Planetary and terrestrial implications.
Astroblème ; Cratère d'impact ; Etats-Unis ; Flynn Creek Crater ; Géographie de l'Amérique ; Géomorphologie structurale ; Tennessee
The establishment and degeneration of a temporary creek system in response to managed coastal realignment : The Wash, UK
This paper examines the growth and decay of an ephemeral creek system produced in response to a managed realignment at Freiston Shore, The Wash. In addition, the natural and anthropogenically enhanced developments of the creek system are compared.
A rock glacier/debris-covered glacier system at Galena Creek, Absaroka Mountains, Wyoming
At Galena Creek, the ice/debris system has alternated between rock glacier and debris-covered glacier modes due to changes in the size of the accumulation area. These results have important implications for paleoclimatic studies of the ice
Waterhole form and process in the anastomosing channel system of Cooper Creek, Australia
One of the most distinctive features of Cooper Creek's anastomosing channel system is the preponderance of waterholes, enlarged segments of channel ranging in length from 100 m to over 20 km. They play a significant hydrological and geomorphological
role in the Cooper Creek anastomosing system. They provide long-term water storage in an arid environment, and their fixed position helps to maintain the stability of the multi-channel pattern.