Résultats de la recherche (329 résultats)
Affinez votre recherche
Par Collection Par Auteur- HEIMSATH, A., (Editeur scientifique) (4)
- CHURCH, M. (3)
- BAKER, J. (2)
- BREMER, H. (2)
- BRIERLEY, G.J. (2)
- CAIRNS, D.M. (2)
- FINKEL, R.C. (2)
- FURBISH, D.J. (2)
- HARVEY, M. D. (2)
- JAMES, L.A., (Directeur de publication) (2)
- JARRETT, R.D. (2)
- MOSSA, J., (Directeur de publication) (2)
- NANSON, G.C. (2)
- WHITING, P.J. (2)
- WILSON, C.J. (2)
- WOHL, E.E. (2)
- WOHL, E.E. (2)
- BERRY, M.E. (2)
- BYRD, T.C. (2)
- DUCKSON, D. W. Jr (2)
- 1998 (19)
- 2013 (17)
- 1996 (15)
- 1997 (13)
- 2000 (13)
- 2001 (13)
- 1993 (12)
- 1999 (12)
- 2007 (12)
- 2009 (12)
- 2011 (12)
- 1994 (11)
- 2012 (11)
- 2004 (10)
- 2008 (10)
- 1980 (9)
- 1981 (8)
- 1995 (8)
- 2010 (8)
- 1990 (7)
- Physical geography (43)
- Geography of America (19)
- Geography of Oceania (6)
- Geography of Europe (4)
- Geography of polar regions (3)
- (1968-1978) ; British Columbia ; Canada ; Développement urbain ; Géographie de l'Amérique ; Idéologie ; Libéralisme ; Parti politique ; Paysage urbain ; Politique locale ; Qualité de la vie ; Société ; Société post-industrielle ; The Electors Action Movement (TEAM) ; Urbanisme ; Vancouver ; Vie politique ; Ville (1)
- 1830-1860 ; ACCULTURATION ; BOVIN ; CHEROKEE ; CHICKASAW ; CHOCTAW ; CREEK ; ELEVAGE ; ELEVAGE EXTENSIF ; ETATS-UNIS ; ETHNIE ; Histoire de la géographie ; INDIEN AMERICAIN ; SEMINOLE ; TEXAS (1)
- ANALYSE HYDRAULIQUE ; ANALYSE HYDROLOGIQUE ; AUSTRALIE ; BASSIN-VERSANT ; COMPORTEMENT HYDROLOGIQUE ; ECOULEMENT ; Géographie de l'Océanie ; HYDRODYNAMIQUE ; HYDROGRAMME ; NEW SOUTH WALES ; ONDE CINEMATIQUE ; RELATION PLUIE-DEBIT ; RESERVOIR ; SIMULATION ; SOUTH CREEK ; THEORIE (1)
- Abandoned industrial land ; Activism ; Environment ; Gentrification ; Mobilisation ; New York City ; United States of America ; Urban policy ; Urban renewal ; Water pollution (1)
- Ablation glaciaire ; Alaska ; Bilan de masse ; Glacier ; Géodésie ; Mesure ; Photographie aérienne ; Siècle 20 ; Télédétection ; Zone froide (1)
- Ablation glaciaire ; Analyse isotopique ; Eau de fonte ; Etats-Unis ; Glacier ; Glacier rocheux ; Géochimie ; Variation spatiale ; Wyoming (1)
- Ablation glaciaire ; Canada ; Eau de fonte ; Eau souterraine ; Ecoulement fluvial ; Glace du sol ; Northwest Territories ; Pergélisol ; Ruissellement ; Variation saisonnière ; Zone froide (1)
- Aburguesamiento ; Activismo ; Contaminación del agua ; Estados Unidos ; Medio ambiente ; Nueva York ciudad ; Política urbana ; Renovación urbana ; Terreno industrial abandonado (1)
- Acción antrópica ; Caño de marea ; Cordón litoral ; Delta ; Dinámica litoral ; Geomorfología litoral ; Impacto ; Litoral ; Portugal ; Transporte sedimentario (1)
- Accumulation fluviatile ; Action éolienne ; Australie ; Cours d'eau ; Domaine aride ; Dynamique fluviale ; Eolien ; Fluviatile ; Granulométrie ; Géographie de l'Océanie ; Géomorphodynamique ; Géomorphologie fluviatile ; Lit fluvial ; South Australia ; Sédimentologie (1)
- Accumulation fluviatile ; Analyse de régression ; Analyse spatiale ; Bassin-versant ; Equipement urbain ; Espace urbain ; Etats-Unis ; Galloway Creek ; Hydrocarbure ; Missouri ; Pollution ; Ruissellement ; Sédiment lacustre ; Traceur (1)
- Accumulation fluviatile ; Domaine aride ; Etats-Unis ; Fluviatile ; Géographie physique ; Géomorphodynamique ; Lit anastomosé ; Plaine d'inondation ; Red Creek ; Sédimentation ; Wyoming (1)
- Acidité ; Analyse chimique ; Contrôle ; Echantillonnage ; Erreur de mesure ; Etats-Unis ; Exploitation minière ; Georges Creek Basin ; Géographie de l'Amérique ; Maryland ; Pollution ; Pollution de l'eau ; Pollution industrielle ; Qualité de l'eau (1)
- Special issue : the geomorphic and climatic significance of rock glaciers (4)
- Changing fluvial systems (2)
- A COMPARISON OF HYDROLOGIC AND HYDRAULIC CATCHMENT ROUTING PROCEDURES (1)
- A comparison of GPS and lidar salt marsh DEMs (1)
- A comparison of hydrology and vegetation between a channelized stream and a non channelized stream in western Tennessee (1)
- A facies approach to the stratigraphic analysis of late Wisconsinan sediments in the Portal Creek area, Jasper National Park, Alberta (1)
- A field experiment on streambed stabilization by gravel structures (1)
- A field experiment on the development of sedimentary structures in a gravel-bed river (1)
- A fluvial sediment budget for Upper Wolumla Creek, south coast, New South Wales, Australia (1)
- A glacial chronology for the Fish Creek drainage of Boulder Mountain, Utah, USA (1)
- A methodology to interpret downvalley lake sediments as records of Neoglacial activity: Coast Mountains, British Columbia, Canada (1)
- A model of two-phase bedload transport in an Oregon Coast Range stream (1)
- A propos de la vallée épigénétique du cours d’eau de Csermely (montagnes d’Uppony) (1)
- A reconstruction of the morphodynamics of a creek channel on the basis of the graining of alluvia, Cooper Creek basin, Australia (1)
- A record of late Quaternary vegetation from Davis Lake, southern Puget Lowland, Washington (1)
- A revised velocity-reversal and sediment-sorting model for a high-gradient, pool-riffle stream (1)
- A rock glacier/debris-covered glacier system at Galena Creek, Absaroka Mountains, Wyoming (1)
- A short-term forecasting model based on retension hysteresis (1)
- A simple model for current speed in tidal channels
- Coastal environment ; Denmark ; Hydrodynamics ; Model ; Sea level ; Storm ; Tidal creek ; Tidal current ; Wind
- This paper presents a simple non-distributed, PC-based model describing current speed in a tidal channel based on the continuity equation with tide gauge water level as the only time dependent input parameter. This model is tested in a tidal channel
- in the Danish Wadden Sea. This type of model can be used to extend and/or complete time series of current speed in a particular tidal channel and to make quick estimates of the current speed, with a minimum of information and CPU consumption.
- Influence of varying tidal prism on hydrodynamics and sedimentary processes in a hypertidal salt marsh creek
- Canada ; Coastal environment ; Geophysics ; Hydrodynamics ; Nova Scotia ; Sea level ; Sediment transport ; Sedimentation ; Tidal marsh ; Tide
- This research considers acoustic Doppler velocimeter (ADV) and optical backscatter sensor (OBS) data from a sheltered tidal creek in the Minas Basin, for analysis of tidal characteristics in a hypertidal creek environment over spring and neap tidal
- cycles. Sediment deposition in the creek was also measured. Results show a first-order control of topography on flow magnitude in the tidal creek, which impacts net sediment deposition through resuspension and removal of newly introduced material
- deposition in tidal creeks, providing large amounts of material that is eventually distributed to and deposited on marsh surfaces.
- The evolution of tidal creek networks, Mary River, Northern Australia
- The AA. describe the extension of tidal creek networks for 50 years. They have extended over 30 km inland across the coastal plains of the Mary River in Northern Australia, invading freshwater wetlands and destroying the associated vegetation
- Hydrodynamics of salt marsh creek systems : implications for marsh morphological development and material exchange
- In this study, the processes of marsh morphological development are analysed. In north Norfolk, highly unsteady creek flows exhibit well-developed velocity and stress transients which result from the nature of tidal priom and the interaction
- of shallow water tidal inputs with hydraulically rough vegetated surfaces (d'après l'Ed.).
- Downvalley gradients in flow patterns, sediment transport and channel morphology in a small macrotidal estuary: Dipper Harbour Creek, New Brunswick, Canada
- Canada ; Channel geometry ; Estuary ; Flood ; Fluvial processes ; Intertidal zone ; New Brunswick ; River bed ; Runoff ; Salt marsh ; Sand ; Sediment transport ; Tidal current
- This study describes the flow patterns, sedimentology and morphology of Dipper Harbour Creek, a small coastal New Brunswick stream whose lower reaches form a macrotidal estuary fringed by salt marsh. The tidal portion of Dipper Harbour Creek
- exhibits strong down-valley gradients in morphology and sedimentology, suggesting some interaction of tidal and fluvial forces. This paper examines these forces and their effects on channel morphology in the lower reaches of this system. In particular
- Tidal estuary width convergence : theory and form in North Australian estuaries
- Australia ; Coastal geomorphology ; Estuary ; Geographical information system ; LANDSAT ; Northern Territory ; Remote sensing ; Tidal creek
- In order to better understand the relations between tidal estuary shape and geomorphic processes, the width profiles of 79 tidal channels from within 30 estuaries in northern Australia have been extracted from LANDSAT 5 imagery using GIS. Statistics
- describing the shape and width convergence of individual channels and entire estuaries (which can contain several channels) are analysed along with proxies for the tidal range and fluvial inputs of the estuaries in question. No clear relation between
- the estuarine width convergence length and tidal range could be discerned within the Northern Australian estuaries.
- The effect of bidirectional flow on tidal channel planforms
- Aerial photography ; Bank erosion ; California ; Channel geometry ; Coastal environment ; Intertidal zone ; Meander ; Model ; Tidal creek ; Tidal current ; Tidal marsh ; United States of America
- Field surveys and aerial photographs were used to characterize the planform of tidal channels at China Camp Marsh in the San Francisco Bay, California. To model the planform evolution, the AA. assume that the topographic curvature of the channel
- centreline is a key element driving meander migration. The curvature calculations, combined with data from numerous cross-sections along the tidal channel, were used to parameterize a computer model. With this model, based on recent theoretical work
- Sediments and water fluxes in a muddy coastline : interplay between waves and tidal channel hydrodynamics
- Coastal dynamics ; Coastal environment ; Intertidal zone ; Louisiana ; Sediment transport ; Storm wave ; Tidal creek ; United States of America ; Wave ; Wind
- To investigate the processes that regulate sediment fluxes in muddy coastlines, the AA. measured tidal velocity and sediment concentration in Little Constance Bayou, a tidal channel in the Rockefeller State Wildlife Refuge, Louisiana, USA. The tidal
- Coastal geo-morphodynamics of an open-ended tidal channel in an arid and mesotidal environment : Al-Subiya tidal channel, Kuwait
- Aeolian features ; Aridity ; Coastal environment ; Earth surface processes ; Erosion ; Kuwait ; Sedimentology ; Tidal creek ; Tide ; Wave
- 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
- 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
- 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
- over the upper part of the bank. The saltmarsh deposits, consisting mainly of clay and organic matter, have a high resistance to flow-induced erosion. Short-term hydrographic deployments revealed that the tidal currents and waves recorded were
- Tidal channel meander formation by depositional rather than erosional processes : examples from the prograding Skagit River Delta (Washington, USA)
- Aerial photography ; Channel geometry ; Chronosequence ; Delta ; Geographical information system ; Intertidal zone ; Meander ; Tidal creek ; Twentieth Century ; United States of America ; Washington State
- Geographic information system (GIS) analysis of historical aerial photographs of the Skagit Delta marshes provides examples of an alternative meander forming process in a rapidly prograding river delta: deposition-dominated tidal channel meander
- formation through a developmental sequence beginning with sandbar formation at the confluence of a blind tidal channel and delta distributary, proceeding to sandbar colonization and stabilization by marsh vegetation. The transition from confluence sandbar
- to tidal channel meander can take as little as 10 years, but more typically occurs over several decades. This depositional blind tidal channel meander formation process is part of a larger scale systemic depositional process of delta progradation
- Coastal environment ; Denmark ; Jylland ; Salinity ; Salt marsh ; Spatial distribution ; Tidal creek ; Topography ; Vegetation
- The AA. investigate the topography-vegetation relationship in a Danish salt marsh, focusing upon 2 scales : a macro-scale (ca. 500 m) across the marsh platform, encompasing seaward and landward areas, and a meso-scale (ca. 25 m) across tidal creeks
Evolution of sedimentary environments of the middle Jiangsu coast, South Yellow Sea since late MIS 3
- Applied geomorphology ; C 14 dating ; China ; Coastal geomorphology ; Coastal sedimentation ; Holocene ; Isotope ; Jiangsu ; River ; Sea level ; Sedimentology ; Stratigraphy ; Tidal creek
- This article analyses the evolution of sedimentary environments of the middle Jiangsu coast, South Yellow sea since late Marine Isotope Stage 3. The results first show the tidal sand ridges began to develop during the postglacial transgression
- as sea-level rise covered the middle Jiangsu coast at ca. 9.0 cal ka BP. The paleo-Xiyang tidal channel that was determined by the paleo-tidal current field and significantly different from the modern one, was in existence during the Holocene
- transgressive maxima and lasted until AD 1128. Following the capture of the Huaihe River in AD 1128 by the Yellow River, the paleo-Xiyang tidal channel was infilled with a large amount of river-derived sediments from AD 1128 to 1855, causing the emergence
- of some of the previously submerged tidal sand ridges. From AD 1855 to the present, the infilled paleo-Xiyang tidal channel has undergone scouring, resulting in its modern form. The modern Xiyang tidal channel continues to widen and deepen, due both
- to strong tidal current scouring and anthropogenic activities.
- Geometric characteristics and evolution of a tidal channel network in experimental setting
- This paper reports on a laboratory study that aims to reproduce a tidal channel network, in order to enhance the understanding of the morphodynamic evolution of the channel characteristics as the network expands and finally reaches equilibrium
- of their width, depth and length. The nature of the observed exponential distributions within creek attributes (width, depth, length) allows for statistical predictability of relative creek attribute dimensions downstream and through time.
- linearly interpolated using identical DEM configurations. Spatial arrangement of difference values reveal that lidar performed best on the marsh platform, and poorly along tidal creeks and creek heads. These observations indicate that lidar appears
- to be a robust tool for mapping intertidal landscapes. However, lidar DEMs may not adequately resolve the microtopographic variations of a salt marsh, and for research questions that require accurate depiction of small-scale tidal creek networks and subtle
- Algarve ; Coastal dynamics ; Coastal environment ; Coastal geomorphology ; Delta ; Human impact ; Impact ; Portugal ; Sand bar ; Sediment transport ; Tidal creek
- indicators, including the evolution of the inlet cross-section, changes in tidal prism, and changes in the dimensions (length and area) of barrier islands. The results reveal how the morphology of an interconnected two-inlet bay system and the adjacent
- coastlines has evolved following the artificial opening and stabilization of Faro-Olhão inlet since 1929. A clear relationship between barrier island size, inlet cross-section/width, and tidal prism is demonstrated. The work highlights the importance of ebb
- -tidal deltas both as sand reservoirs and as conduits through which sand exchange between estuaries or lagoons and the open coast is regulated.
- Using a multi-receiver survey of apparent electrical conductivity to reconstruct a Holocene tidal channel in a polder area
- Belgium ; Coastal environment ; Electrical conductivity ; Geophysics ; Holocene ; Palaeogeomorphology ; Polder ; Research technique ; Tidal creek ; West Flanders
- The AA. investigated the effectiveness of a multi-receiver apparent electrical conductivity (ECa) survey for mapping the trace of tidal paleochannels in the western part of the coastal plain of Belgium. From a limited number of augerings, a three
- 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
- Applied geomorphology ; Beach ; Climatic variation ; Coastal dynamics ; Coastal environment ; Coastal erosion ; Coastal geomorphology ; Coastal management ; Estuary ; Marine terrace ; New Zealand ; Research ; Sea level ; Shore platform ; Tidal 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.