Solr Search · GéoProdig, portail d'information géographique

Wood storage within the active zone of a large European gravel-bed river

Wood storage within the active zone of a large European gravel-bed river
Wood storage within the active zone of the dynamic, gravel-bed, Fiume Tagliamento, Italy, was investigated at 8 sites along the river's main stem. The objective was to study variations in the distribution and abundance of wood at a sample of sites
, in order to identify downstream trends and to understand how the controls on wood storage change along the length of the river.

Effects of coarse woody debris on morphology and sediment storage of a mountain stream system in western Oregon

Effects of coarse woody debris on morphology and sediment storage of a mountain stream system in western Oregon
Effects of coarse woody debris (CWD) on channel morphology and sediment storage were investigated at five sites, representative of first-order to fifth-order streams. Channel widening, steepening and sediment storage associated with CWD were
observed predominantly in third- to fifth-order streams. In the fifth-order stream CWD promoted lateral channel migration, but sediment storage was temporary, with annual release and captive.

Quantitative determination of the activity of within-reach sediment storage in a small gravel-bed river using transit time and response time

Quantitative determination of the activity of within-reach sediment storage in a small gravel-bed river using transit time and response time
Carrying capacity ; Channel geometry ; Grain size distribution ; Gravel ; Methodology ; Quantitative analysis ; River bed ; Scotland ; Sediment load ; Storage site ; Stream ; Tracer ; United Kingdom
This paper demonstrates how fractional sediment storage activity in a gravel-bed river can be quantified using a within-reach sediment budget and reservoir theory. Deployment of magnetic tracer particles allows accurate characterisation of sediment
fluxes in gravel-bed rivers and provide the opportunity to quantify storage activity using reservoir theory. The results suggest that transit time is difficult to determine from tracer studies in gravel-bed rivers. Consequently, a refinement of transit

Raum und erneuerbare Energien. Anforderungen eines regenerativen Energiesystems an die Standortplanung

Energy ; Energy need ; Power station ; Renewable energy ; Space ; Storage site
The article deals with the big land requirements of renewable energies, the regenerative kombi power station and the locations for energy storage. The aim of the paper is, with help of GIS, to clarify the high space efficiency of the development

Input, storage and distribution of large woody debris along a mountain river continuum, the Drôme River, France

Input, storage and distribution of large woody debris along a mountain river continuum, the Drôme River, France
Large woody debris (LWD) were studied along the Drôme River, a French Alpine river with an active shifting channel and a well-developed riparian forest. The objectives are to assess LWD quantities (input from floodplain and in-channel storage
), the preferential sites of LWD deposit and the geomorphological influence of LWD along the river course of a human-modified watershed. These objectives should allow for the proposal of soft-maintenance strategies of LWD.

Influence of storm-related sediment storage on the sediment delivery from tributary catchments in the Upper Waipaoa River, New Zealand

Influence of storm-related sediment storage on the sediment delivery from tributary catchments in the Upper Waipaoa River, New Zealand
Sediment delivery ratios focused on the influence of storm-related sediment storage are measured at Matakonekone and Oil Springs tributaries of the Waipaoa River basin, east coast of New Zealand. The terrace deposits of both tributaries show
a tributary to the main stream by the volume of sediment generated at erosion sites in the tributary catchment.

Spatial and temporal variability of sediment transfer and storage in an Alpine basin (Reintal valley, Bavarian Alps, Germany)

Spatial and temporal variability of sediment transfer and storage in an Alpine basin (Reintal valley, Bavarian Alps, Germany)
Bavaria ; Germany ; Sediment transfer ; Sedimentary ; Slide rocks ; Storage site

The relationship between geomorphic river structure and coarse particulate organic matter (CPOM) storage along the Kangaroo River, New South Wales, Australia

The relationship between geomorphic river structure and coarse particulate organic matter (CPOM) storage along the Kangaroo River, New South Wales, Australia
Australia ; Fluvial landform ; New South Wales ; Organic materials ; Storage site ; Stream ; Structural geomorphology

Az Ofalu mellé tervezett radioaktiv-hulladék lerakohely foldrajzi kornyezete L'environnement géographique du lieu de décharge de déchets radioactifs planifié à Ofalu

Aspect socio-économique ; Baranya ; Choix du site ; Décharge ; Déchet radioactif ; Environnement ; Géographie de l'Europe ; Géomorphologie appliquée ; Hongrie ; Impact sur l'environnement ; Nuisance ; Ofalu
The disposal site - regarded suitable by technical designers for the long-term storage of nuclear waste - is located in the Baranya Hills, on a forested plateau dissected by erosion valleys. Geomorphological, hydrometeorological, geotechnical
as well as public administration, infrastructural and sociological arguments are enumerated which contradict to the suitability of the selected site. - (DLO), (JS)

A dynamic location-allocation model for evaluating the spatial impacts for just-in-time planning

Approvisionnement ; Calcul économique ; Choix du site ; Généralités sur la géographie ; Localisation ; Modèle de localisation-allocation ; Origine-destination ; Production ; Réseau de transports ; Structure spatiale
The paper presents an interperiod network storage location-allocation (INSLA) model to solve the production planning problem. It is extended to a multiobjective problem in which trade-offs between delivery time and transportation costs are analyzed.

A geographical method to assess technological hazards. The example of the storage and the distribution of the fuel oils in the urban region of Ile-de-France

A geographical method to assess technological hazards. The example of the storage and the distribution of the fuel oils in the urban region of Ile-de-France
France ; Geographical information system ; Hydrocarbon ; Ile-de-France ; Marketing channel ; Simulation ; Storage site ; Technological risk ; Transport ; Urban planning
Avec l'aide d'un SIG, qui décrit avec précision l'usage des sols, une méthode est développée pour comparer les risques-site (autour d'un établissement industriel dangereux) et les risques-transport (le long du parcours des véhicules livrant les

Time stability of soil water storage measured by neutron probe and the effects of calibration procedures in a small watershed

Time stability of soil water storage measured by neutron probe and the effects of calibration procedures in a small watershed
The knowledge of soil water storage (SWS) of soil profiles is crucial for the adoption of vegetation restoration practices. With the aim of identifying representative sites to obtain the mean SWS of a watershed, a time stability analysis of neutron
. Therefore, spatial variability of soil properties should be taken into account during the process of neutron probe calibration. This study provides useful information on the mean SWS observation with a time stable site and on distinct neutron probe

Effects of topsoil removal as a nature management technique on soil functions

Sandy soils under original heathland vegetation were compared with sites that were transformed to farmland in 1950 and sites where after the transformation topsoil removal took place in the 1990s. All soils were sandy and acidic. It is showed
that the C storage and the buffer function of the soils have drastically decreased. The N and P storages in the soils where topsoil was removed have also greatly reduced. In the topsoil removed soils no re-colonization of earthworms had occurred and microbial
activity has significantly reduced. These changes in soil properties negatively influenced several soil functions which are relevant in nature and environmental protection, e.g. C-storage, filtering and buffering. The AA. therefore conclude that removal

The location of waste transfer stations in Ashdod, Israel, using a multi-criteria decision support system

Ecology ; Environment ; Israel ; Location ; Location choice ; Model ; Multi-criteria analysis ; Nuisance ; Storage site ; Waste
Analyse multicritère ; Choix du site ; Déchet ; Ecologie ; Environnement ; Israël ; Localisation ; Modèle ; Nuisance ; Stockage
Utilisation d'un système d'analyse d'aide à la décision pour le choix du site de stations de transfert de déchets solides. Application à la ville d'Asdod, à 34 km au sud de Tel Aviv, sur la côte méditerranéenne. Deux sites parmi huit ont été

A multicriteria model for the location of solid waste transfer stations : the case of Ashdod, Israel

Ecology ; Environment ; Israel ; Location ; Location choice ; Model ; Multi-criteria analysis ; Nuisance ; Storage site ; Waste
Analyse multicritère ; Choix du site ; Déchet ; Ecologie ; Environnement ; Israël ; Localisation ; Modèle ; Nuisance ; Stockage
Problèmes du choix du site de telles stations de transfert de déchets solides, notamment dans des zones urbanisées. Cinq catégories de critères doivent être prises en considération : écologiques, politiques, transport, économiques et spatiaux. Un
modèle d'évaluation permet de comparer la contribution des critères. Chaque critère est classé et leur combinaison permet de proposer des sites éventuels, selon les préférences accordées aux critères.

Wood dynamics in upland streams under different disturbance regimes

) biogeoclimatic zone, and 3 recent Mountain Pine Beetle (MPB) infestation sites and 3 undisturbed sites in the Montane Spruce (MS) zone. Detailed information on wood recruitment, output and storage were obtained from repeated annual surveys. An attempt is made
This paper presents reach scale large wood (LW) budgets of 12 upland streams in the Okanagan Basin of British Columbia. The study included 100 m long reaches at 3 wildfire sites and 3 undisturbed sites in the Interior Douglas-fir (IDF
, but is expected to increase over the coming decades. Storage rates at the disturbed streams indicated a net accumulation of wood over the study period.

Landscape characteristics influence the spatial pattern of soil water storage : Similarity over times and at depths

Landscape characteristics influence the spatial pattern of soil water storage : Similarity over times and at depths
The aim of this study was to examine the similarity in the spatial patterns of soil water storage (SWS) and its characteristic landscape positions for variable soil depths and over time at a field scale. Soil water content (further converted to SWS
by multiplying with depth) was measured for 5 years (2007–2011) along a transect at a study site that has representative hummocky landscape of the North American Prairie Pothole region. It is highlighted that : 1) Similarity in the spatial patterns was scale

Cointegration between U.S. wheat markets

Autoregressive process ; Forecast ; Harbour ; Kansas ; Market ; Price fixing ; Statistics ; Storage site ; Texas ; Time series ; Transport cost ; United States ; Wheat

Stockage des aliments au Liban

Cereal ; Food ; Lebanon ; Leguminous plants ; Peasantry ; Storage site

The utility of in-depth interviews for studying the meaning of environmental risk

Canada ; Choix du site ; Collectivité locale ; Conflit ; Enquête ; Environnement ; Méthode qualitative ; Ontario ; Perception ; Perception du risque ; Risque naturel ; Risque technologique ; Stockage souterrain ; Théorie sociale ; Traitement des
Canada ; Conflict ; Enquiry ; Environment ; Local government ; Location choice ; Natural hazards ; Ontario ; Perception ; Qualitative method ; Risk perception ; Social theory ; Technological risk ; Underground storage ; Waste treatment

Résultats de la recherche (5918 résultats)

Affinez votre recherche