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Par Collection Par Auteur- BEACH, T., (Editeur scientifique) (7)
- BENEDETTI, M.M., (Editeur scientifique) (7)
- CORDOVA, C.E., (Editeur scientifique) (7)
- MEYER, H. (4)
- SLETTEN, R.S. (4)
- HEITMULLER, F.T. (3)
- MOSSA, J. (3)
- BALOGH, J. (2)
- CHURCH, M. (2)
- DEVÈS, G. (2)
- Groupe Français de Géomorphologie, France, (Organisateur de congrès) (2)
- HESNARD, A. (2)
- MAIRE, R. (2)
- MARRINER, N. (2)
- MEYER, H. (2)
- MORHANGE, C. (2)
- MURTON, J., (Editeur scientifique) (2)
- NICHOLS, M.H. (2)
- ORTEGA, R. (2)
- POESEN, J. (2)
- 2011 (207)
- ASTER ; Aeolian features ; Arid area ; Data processing ; Digital elevation model ; Dune ; Geomorphometry ; Namibia ; Remote sensing (1)
- ASTER ; Domaine aride ; Dune ; Eolien ; Géomorphométrie ; Modèle numérique de terrain ; Namibie ; Traitement des données ; Télédétection (1)
- AVHRR ; Années 1976-2005 ; Bassin-versant ; Bilan sédimentaire ; Dynamique de la végétation ; Ecoulement fluvial ; El Niño ; Indice de végétation ; Littoral ; Oscillation climatique ; Pérou ; Pérou du Nord ; Sédimentation littorale ; Série chronologique ; Télédétection ; Végétation (1)
- AVHRR ; Balance sedimentario ; Cuenca hidrográfica ; Dinámica de la vegetación ; Escorrentíafluvial ; Litoral ; Oscilación climatíca ; Perú ; Sedimentación litoral ; Serie cronológica ; Teledetección ; Vegetación ; Índice de vegetación (1)
- AVHRR ; Climate oscillation ; Coastal environment ; Coastal sedimentation ; El Niño ; Northern Peru ; Peru ; Remote sensing ; Sediment budget ; Stream flow ; Time series ; Vegetation ; Vegetation dynamics ; Vegetation index ; Watershed (1)
- Abidjan ; Action anthropique ; Aménagement du littoral ; Années 1967-2009 ; CORONA ; Côte d'Ivoire ; Erosion littorale ; Image satellite ; Littoral ; Photo-interprétation ; SPOT ; Trait de côte ; Télédétection (1)
- Abidjan ; Coastal environment ; Coastal erosion ; Coastal management ; Coastline ; Human impact ; Ivory Coast ; Photointerpretation ; Remote sensing ; SPOT ; Satellite imagery (1)
- Abiyán ; Acción antrópica ; Costa de Márfil ; Erosión litoral ; Fotointerpretación ; Imagen satélite ; Litoral ; Ordenamientodel litoral ; SPOT ; Teledetección (1)
- Abono del suelo ; Agrología ; Aprovechamiento agrícola del suelo ; Campo árido ; Desarrollo sostenible ; Estados Unidos ; Humedad del suelo ; Irrigación ; Propiedades del suelo ; Suelo (1)
- Abyssal plain ; Asian part of Russia ; Bathymetric chart ; Bathymetry ; Continental shelf ; Lithosphere ; Marine sedimentation ; Palaeogeomorphology ; Relief ; Sea current ; Sea floor ; Sea of Japan ; Submarine geomorphology ; Subsidence ; Volcanic activity (1)
- Soils, sediments, and geoarcheology. Special issue (7)
- Special Issue : Stable isotopes and geochemistry of ground ice (4)
- Kaspijskij region : izmeneniâ klimata i èvoluciâ prirodnoj sredy (3)
- Physical geography of medium-sized rivers, focusing on the Southeastern and South-Central United States. Part I (3)
- Région Caspienne : changements climatiques et évolution du milieu naturel (3)
- ArchéoMed-PaléoMed. Géoarchéologie en Méditerranée. Mélanges offerts à Mireille Provansal (2)
- Ryhtmes et temporalités en géomorphologie : de l'évolution des volumes de relief à la reconstitution d'événements instantanés (actes des Journées des Jeunes Géomorphologues 2010, Groupe Français de Géomorphologie) (2)
- Rythms and temporalities in geomorphology: from the evolution of volumes of relief to the reconstruction of instantaneous events (proceedings of the 2010 Young Geomorphologists colloquium, French Group of Geomorphologists) (2)
- Special issue : In honour of Professor Charles harris (2)
- A new framework for modeling the migration of meandering rivers (1)
- A parameterization of the wavelength of tidal dunes (1)
- A participatory soil quality assessment in Northern Ethiopia's Mai-Negus catchment (1)
- A rational sediment transport scaling relation based on dimensionless stream power (1)
- A simple model accounting for the uptake, transport, and deposition of wind-eroded mineral particles in the hyperarid coastal Atacama Desert of northern Chile (1)
- A two-dimensional morphodynamic model of gravel-bed river with floodplain vegetation (1)
- Active width of gravel-bed braided rivers (1)
- Advancing understanding of runoff and sediment transfers in agricultural catchments through simultaneous observations across scales (1)
- Air and ground temperature variations observed along elevation and continentality gradients in southern Norway (1)
- Aléas, vulnérabilités et adaptations des sociétés du passé (1)
- Baalbek (1)
- Liban (1)
- Asie (1)
- Sediments in collapse dolines on the Kras plateau, Slovenia
- The article presents a detailed geomorphological analysis of collapse dolines on the Kras plateau in Slovenia with particular stress on the morphogenetic development of their floors covered with loamy sediment. The depths of sediment fills were
- established with electrical resistivity imaging. The results of the study revealed that loamy fills may represent sedimentation of suspended material from floodwaters or can originate from now-demolished cave passages on the slopes that were filled with finer
- material. Some sediment has been accumulated as an aeolian deposit. - (IKR)
- 2011
- Impacts of socio-economic factors on sediment yield in the Upper Yangtze River
- Action anthropique ; Aménagement hydraulique ; Bassin-versant ; Chine ; Corrélation ; Densité de population ; Déboisement ; Erosion des sols ; Indicateurs socio-économiques ; Pente de versant ; Propriétés du sol ; Sichuan ; Taux de sédimentation
- Agricultural land use ; China ; Correlation ; Deforestation ; Human impact ; Hydraulic works ; Population density ; Sedimentation rate ; Sichuan ; Slope gradient ; Socio-economic indicators ; Soil erosion ; Soil properties ; Watershed ; Yangtze
- Taking Sichuan Province and Chongqing City as an example, this paper studies the relationship between socio-economic factors and sediment yield in the Upper Yangtze River based on section data in 1989 and 2007. The results show that sediment yield
- is significantly correlated with population density and cultivated area, in which the former appears to be more closely related to sediment yield. Moreover, in the relation of sediment yield vs. population density, a critical value of population density exists
- . This phenomenon essentially reflects the influence of natural factors, such as topography, precipitation and soil property, and some human activities on sediment yield. It is also found that population tends to move from the areas with bad environment and high
- sediment yield to the areas with more comfortable environment and less sediment yield.
- 2011
- Effect of ENSO events on sediment production in a large coastal basin in northern Peru
- AVHRR ; Années 1976-2005 ; Bassin-versant ; Bilan sédimentaire ; Dynamique de la végétation ; Ecoulement fluvial ; El Niño ; Indice de végétation ; Littoral ; Oscillation climatique ; Pérou ; Pérou du Nord ; Sédimentation littorale ; Série
- AVHRR ; Climate oscillation ; Coastal environment ; Coastal sedimentation ; El Niño ; Northern Peru ; Peru ; Remote sensing ; Sediment budget ; Stream flow ; Time series ; Vegetation ; Vegetation dynamics ; Vegetation index ; Watershed
- The Catamayo-Chira basin is an interesting case study for investigating these geomorphic implications. The aims were: (i) to study the effect of ENSO on stream flow and sediment yields in the basin, (ii) to investigate if ENSO events affect sediment
- yields in the post-ENSO period and (iii) to understand which factors control the ENSO and post-ENSO basin response. The analysis indicates the increase of vegetation growth in the lower basin is not the main reason explaining considerable sediment flux
- decrease in post-ENSO periods. During strong ENSO events, sediment in alluvial stores in the lower part of the basin is removed due to enlarging and deepening of channels. The decrease in sediment export will last for several years until the equilibrium
- 2011
- In-channel sediment storage in a highly erodible catchment: the River Isábena (Ebro Basin, Southern Pyrenees)
- Carrying capacity ; Ebro ; Erodibility ; Fluvial deposit ; Mediterranean area ; Mountain ; Pyrénées ; Sediment budget ; Soil erosion ; Spain ; Suspended load ; Watershed
- In-channel sediment storage has been studied in a ∼3-km channel length reach of the River Isábena during an average hydrological year (2007-2008). This river is located at the Southern Pyrenees and the channel network flows through an area
- of extremely erodible materials producing an enormous amount of suspended sediment. Sediment storage values obtained in the study reach have been extrapolated to the whole main channel. In-channel storage shows both temporal and spatial trends. In relation
- to the former, sediment is continuously accumulated during low-flows while the latter shows that sediment accumulation increases in the downstream direction. Results suggest that the fine-grained sediment stored in the channel may represent an important
- component of the suspended sediment budget of rivers draining highly erodible materials such as the River Isábena.
- 2011
- Combining suspended sediment monitoring and fingerprinting to determine the spatial origin of fine sediment in a mountainous river catchment
- Alpes du Sud ; Alpes-de-Haute-Provence ; France ; Geochemistry ; Hydraulic works ; Model ; Mountain ; Sediment budget ; Suspended load ; Tracer ; Watershed
- This study used a combination of flow and sediment concentration monitoring data from 6 stations distributed across the Bléone catchment in the French southern Alps. To determine the dominant sources of sediment in the entire catchment, a sediment
- tracing study was conducted during the 2007-2009 period, based on sediment geochemistry and fallout radionuclide concentrations. The implications for future catchment management actions aimed at decreasing the supply of sediment to the reservoir
- 2011
- Factors controlling sediment yield in China's Loess Plateau
- China ; Loess ; Plant canopy ; Plateau ; Precipitation ; Runoff ; Sediment budget ; Spatial variation ; Vegetation ; Vegetation index ; Watershed
- This study has employed a substantial dataset of multi-year measurements from 180 gauging stations to investigate the spatial pattern of sediment yield in the Loess Plateau and to determine major factors that control the observed patterns
- of sediment yield. Particularly, the AA. investigated whether the NormalizedDifference Vegetation Index (NDVI), a readily available dataset, has close relations with sediment yield in the area.
- 2011
- Scale variation of post-glacial sediment yield in Chilliwack Valley, British Columbia
- British Columbia ; Canada ; Drainage network ; Holocene ; Model ; Paraglacial ; Sediment budget ; Valley
- The Holocene volumetric sediment budget is estimated for coarse textured sediments (sand and gravel) in a large, formerly glaciated valley in southwest British Columbia. Erosion is estimated by compiling volumetric loss estimated in digital
- of low-order tributary catchments. Results are classed by catchment order and compared across scales of contributing area. A simple network routing model emphasizes the significant sediment flux contributions from colluvium, drift blankets and gullies
- 2011
- Sedimentation source identification in a semiarid watershed at soil mapping unit scales
- Arid area ; Arizona ; Erodibility ; Index ; Rill wash ; Sediment budget ; Semi-arid area ; Suspended load ; United States of America ; Water erosion ; Watershed
- The aim of this research was to develop an approach to identify sediment sources at a soil mapping unit scale for the purpose of designing site specific best management practices which affect greater reductions in runoff and erosion losses
- . This study was conducted in the Walnut Gulch Experimental Watershed. It was accomplished by using specific clay enrichment ratio data as indicators of sediment delivery in combination with a sediment yield index determined form measured aggregation index
- (erodibility) data weighted on the basis of relative area occupied by a given soil mapping unit. The results support the accuracy of a potential sediment yield index approach for identifying suspended sediment sources at soil mapping unit scales.
- 2011
- [b1] USDA-ARS National Sedimentation Lab., MS, Oxford, Etats-Unis
- Controls on slope-to-channel fine sediment connectivity in a largely ice-free valley, Hoophorn Stream, Southern Alps, New Zealand
- Mountain ; New Zealand ; Precipitation ; Rainstorm ; Sediment transport ; South Island ; Suspended load ; Turbidity ; Watershed
- The AA. monitored fine sediment mobilization on a slope segment hydrologically connected to a stream in the ice-free Hoophorn Valley, New Zealand. Gerlach traps were installed in ephemeral slope channels to trap surficial material mobilized during
- rainfall events. Analyses of sediment-discharge hysteresis patterns were used to show if fine sediment connectivity was occuring between the monitored slope segment and the stream channel , and to permit identification of sediment sources within
- the catchment as a whole. Although the data set covers a relatively short-time period, this systematic approach enabled overall assessment of current controls on slope-to-channel fine sediment connectivity, and its implications for how the sediment transfer
- 2011
- Assessing the utility of 210Pb geochronology for estimating sediment accumulation rates on river floodplains in Fiji
- Bassin-versant ; Erosion des sols ; Fidji ; Géochronologie ; Hydrologie fluviale ; Inondation ; Plaine alluviale ; Plomb ; Sédimentation ; Sédimentologie ; Taux de sédimentation ; Vanua Levu
- Alluvial plain ; Fiji ; Fluvial hydrology ; Geochronology ; Inundation ; Lead ; Sedimentation ; Sedimentation rate ; Sedimentology ; Soil erosion ; Watershed
- Les AA. analysent les taux de sédimentation de la plaine alluviale sur l'île de Vanua Levu (îles Fidji) par spectométrie. Il s'agit d'une méthode non destructive qui permet de déterminer l'excès de 210 Pb dans une région consacrée à la culture de la
- canne à sucre. Les résultats montrent que l'accélération de l'érosion du sol provoquée par les incendies des cultures et les inondations sont responsables de la production de sédiments. Cependant cette méthode présente de sérieux inconvénients, si on la
- compare à la Cs (carbone-soufre) et ce en raison de la faible concentration de plomb dans les sédiments alluviaux testés.
- 2011
- Influence of Naturally High Fine Sediment Loads on Aquatic Insect Larvae in a Montane River
- Badland ; Bassin-versant ; Cours d'eau ; Faune ; Habitat ; Insecte ; Royaume-Uni ; Scotland ; Taux de sédimentation ; Taxonomie ; Transport sédimentaire
- Badland ; Fauna ; Habitat ; Insect ; Scotland ; Sediment transport ; Sedimentation rate ; Stream ; Taxonomy ; United Kingdom ; Watershed
- Sedimentation of fines associated with human activity is an important source of ecological impoverishment in rivers. However, there is a paucity of information on whether fine sediment associated with natural processes results in similar impairment
- . We assessed the effect of fine sediment on the taxonomic composition and abundance of insect larvae in a river which receives high inputs as a result of naturally erodible badland areas. An adjacent subcatchment, which does not experience high
- sediment inputs but is otherwise similar, was used as a reference. There were marked differences in insect density and taxon richness between the twosubcatchments. The abundance of a number of insect taxa decreased as the proportion of bed material
- comprising fines increased. A similar decrease was observed in the EPT metric. Fine sediment exerted a dominant and homogenizing influence on community structure in the patches of streambed where it occurred in high concentrations. Between 24 and 36
- % of the overall variability in community structure could be explained by sedimentary conditions. In locations where when fine sediment content was limited, other habitat variables influenced insect community structure, with patch assemblages generally more diverse
- 2011
- Application of multiple sediment fingerprinting techniques to determine the sediment source contribution of gully erosion : review and case study from Boushehr province, southwestern Iran
- Arid area ; Gully erosion ; Iran ; Isotope analysis ; Model ; Sediment budget ; Sediment transport ; Soil erosion ; Tracer ; Water erosion
- In this paper a multi-parameter fingerprinting method is used to determine the sediment contribution of gully erosion (Scg) in three catchments in Iran, with different areas and drainage densities. Tracers including carbon, nitrogen, C/N, phosphorus
- managers, who rely on results of erosion models which mainly focus on rill and sheet erosion, should consider these results, which demonstrate the importance of gullies as a major sediment source.
- 2011
- Baseflow control on sediment flux connectivity: Insights from a nested catchment study in Central Mexico
- Base level ; Mexico ; Michoacán ; Sediment budget ; Sediment transport ; Suspended load ; Tropical zone ; Water erosion ; Watershed
- In order to assess the extent of sediment connectivity between uplands and lowlands and to quantify the processes of in-channel deposition and remobilization, measurements of suspended sediment fluxes were conducted in Cointzio catchment, a nested
- rural catchment of the Mexican Volcanic Belt. Data were collected over one year at three upland sites. The results show that rather than drainage area, landscape controls were the main drivers of sediment export and surface–subsurface partitioning
- ; widespread rainfall indirectly sustained in-channel erosion; baseflow discharge boosted sediment conveyance in the downstream alluvial plain.
- 2011
- Patterns of grain-size dependent sediment transport in low-ordered, ephemeral channels
- Arid area ; Arizona ; Ephemeral stream ; Experimental catchment ; Grain size distribution ; Runoff ; Sediment load ; Sediment transport ; Semi-arid area ; Suspended load ; United States of America ; Watershed
- if the concentration of transported sediment exhibit grain-size selective transport patterns, (2) to quantify how the grain-size selective transport patterns, if present, are different from the mean pattern of the total sediment load and from one another, (3
- ) to explore the dependency of grain-size selective transport patterns on metrics of flow strength, duration, and sediment source, and (4) to determine if the grain-size selective transport patterns significantly affect watershed sediment delivery.
- 2011
- Distributions of sediments of the tidal flats in response to dynamic actions, Yangtze (Changjiang) Estuary
- Chine ; Courant de marée ; Dynamique littorale ; Estuaire ; Granulométrie ; Sédimentation littorale ; Sédimentologie ; Vague ; Yangtze ; Zone intertidale
- China ; Coastal dynamics ; Coastal sedimentation ; Estuary ; Grain size distribution ; Intertidal zone ; Sedimentology ; Tidal current ; Wave ; Yangtze
- Sediment samples with high spatial resolution and flow data were collected on the tidal flats in the mouth-bar region of the Yangtze Estuary in July 2005, July 2006 and May 2007. The samples were analyzed with a particle sizer, resulting
- in the sediment distribution. The grain sizes and related parameters were analyzed. The results were presented in a ternary diagram and further more discussed per shoal. The AA. interpret them in order to understand the sediment processes on the subtidal areas
- 2011
- Runoff generation and sediment yield on homogeneous dune slopes: scale effect and implications for analysis
- Arid area ; Biogenic process ; Desert ; Dune ; Duricrust ; Israel ; Negev ; Precipitation ; Runoff ; Scale ; Sediment budget
- Runoff and sediment yield collected on dune slopes over a wide range of plot sizes during 1990–1994 in the Negev Desert showed that the contributing area was mainly confined to a narrow belt at the bottom of the slopes. It was therefore hypothesized
- , it is further argued that the magnitude of the SE is surface-dependent. As a result, it is argued that the conventional way for runoff and sediment yield presentation as mass per unit area implies theoretical misconceptions and may cause gross overestimation
- in extrapolation and the presentation of runoff and sediment yield in mass per unit width of the slope is suggested. The accuracy of the 2 extrapolation methods are compared to the actual runoff and sediment yield collected in the field and the results
- 2011
- Modelling wind-blown sediment transport around single vegetation elements
- Aeolian features ; Africa ; Arid area ; Model ; Sahel ; Scattered vegetation ; Sediment transport ; Vegetation ; Wind erosion ; Wind speed
- Starting with the selection of a suitable transport equation from 4 possible sediment transport equations, the effects of a single vegetation element on wind speed were parameterized. The model was tested with field data on wind speed and sediment
- transport measured around isolated shrubs in a farmer's field in the north of Burkina Faso. The simple empirical equation of Radok performed best in modelling soil erosion and sediment transport, both for the entire event duration and for each minute within
- an event. The variability in wind direction created a ‘rotating’ area of influence around the shrub. Compared to field measurements the model predicted an 8% larger reduction in sediment transport in the lee of the vegetation element, and a 22% larger
- 2011
- Clay mineral ; Erosion rate ; Hydraulic works ; Landslide ; Risk management ; Sediment load ; Suspended load ; United States of America ; Washington State ; Watershed ; Weathering
- Extreme sedimentation in Swift Creek, located in the Cascades foothills in NW Washington results from erosion of the oversteepened, unvegetated toe of a large active landslide. Deposition of landslide-derived sediment has necessitated costly
- mitigation projects in the channel including annual dredging and temporary sediment traps in an attempt to reduce the risk of flooding and damage to man-made structures downstream. This study attempts to understand the process of sediment production along
- with the corresponding erosion rates of the sediment source to help with the development of mitigation plans and construction of optimal sediment reservoirs.
- 2011
- Fidji ; Holocène ; Ile ; Lagon ; Niveau marin ; Paléogéographie ; Régression marine ; Sédiment marin ; Sédimentation marine ; Sédimentologie
- Fiji ; Holocene ; Island ; Lagoon ; Marine regression ; Marine sediment ; Marine sedimentation ; Palaeogeography ; Sea level ; Sedimentology
- Les AA. analysent une carotte de sédiments d'un ancien lagon côtier proche de Bourewa (aux îles Fidji), datant de l'Holocène. Les sédiments, situés au dessus du substrat rocheux remontent à 11470 cal BP. Une transition majeure est intervenue aux
- environs de 8000 cal BP, au moment où l'influence marine sur la sédimentation du paléolagon est la plus forte. Les résultats montrent que les premières colonisations humaines des îles se sont déroulées lors des régressions à la fin de l'Holocène, que les
- 2011
- Afrique du Sud ; Limpopo ; Lit fluvial ; Milieu humide ; Plaine d'inondation ; Sédimentation
- Floodplain ; Humid environment ; Limpopo ; River bed ; Sedimentation ; South Africa
- The Nyl River floodplain wetland, one of South Africa’s largest floodplain wetlands and a Ramsar site of international conservation importance, is located in an area of long-term and still active valley sediment accumulation. Creation
- of accommodation space for sedimentation has previously been attributed to tectonic controls, but new investigations reveal that a more likely cause is progradation of coarse-grained tributary fans across the narrow river valley downstream of the main area
- 2011