Résultats de la recherche (137 résultats)
Affinez votre recherche
Par Collection Par Auteur- DEROIN, J.-P., (Editeur scientifique) (6)
- HERNANDEZ, M., (Editeur scientifique) (6)
- LASAPONARA, R., (Editeur scientifique) (6)
- MASINI, N., (Editeur scientifique) (6)
- KEILER, M., (Directeur de publication) (3)
- KELLERER-PIRKLBAUER, A., (Directeur de publication) (3)
- OTTO, J.-C., (Directeur de publication) (3)
- BAILLY, J.-S. (2)
- DEROIN, J.-P. (2)
- GRASSL, H. (2)
- LENZI, M.A. (2)
- MAO, L. (2)
- RIEG, L. (2)
- TAROLLI, P. (2)
- SAILER, R. (2)
- SCHMITZ-PEIFFER, A. (2)
- AHMED, F. (1)
- ALHO, P. (1)
- ALLOUIS, T. (1)
- ANDRIEU, J. (1)
- 2013 (23)
- 2011 (18)
- 2012 (18)
- 2009 (16)
- 2008 (10)
- 2010 (10)
- 2014 (10)
- 2007 (9)
- 2006 (5)
- 2005 (4)
- 1990 (2)
- 2003 (2)
- 2004 (2)
- 1980 (1)
- 1984 (1)
- 1985 (1)
- 1986 (1)
- 1992 (1)
- 1996 (1)
- 2001 (1)
- General points on geography (3)
- ASTER ; Années 2004-2009 ; Chenal anastomosé ; Cours d'eau ; Crue ; Dynamique de la végétation ; Friuli-Venezia Giulia ; Image satellite ; Indice de végétation ; Italie ; LiDAR ; Régime hydrique ; Tagliamento ; Traitement des données ; Télédétection ; Végétation ripicole (1)
- ASTER ; Braided channel ; Data processing ; Flood ; Friuli-Venezia Giulia ; Italy ; LiDAR ; Remote sensing ; Riparian vegetation ; Satellite imagery ; Stream ; Vegetation dynamics ; Vegetation index ; Water regime (1)
- AVHRR ; Adriatique Nord ; CZCS ; Chlorophylle A ; Eau de mer ; Généralités sur la géographie ; Italie ; NOAA ; Po delta ; Technique de recherche ; Température de surface ; Transfert de radiation ; Transparence de l'eau ; Télédétection (1)
- Abrasion platform ; Adriatic Sea ; Cliff ; Coastal environment ; Data analysis ; Geomorphology ; LiDAR ; Remote sensing ; Slovenia ; Spatial analysis (1)
- Acantilado ; Análisis de datos ; Análisis espacial ; Eslovenia ; Geomorfología ; LiDAR ; Litoral ; Mar Adriático ; Plataforma de abrasión ; Teledetección (1)
- Acantilado ; California ; Derrumbe ; Dinámica de vertiente ; Estados Unidos ; Fractura ; Granito ; LiDAR ; Mecánica de las rocas ; Teledetección ; Vertiente (1)
- Acción antrópica ; Alemaña ; Austria ; Bade-Wurtemberg ; Baja Austria ; Deslizamiento deterreno ; Geocronología ; LiDAR ; Modelo numérico de terreno ; Teledetección ; Vertiente (1)
- Acción antrópica ; Alpes ; Cauce ; Corriente de agua ; Crecida ; Dinámica fluvial ; Fotografía aérea ; Grava ; Italia ; LiDAR ; Vegetación ; Véneto (1)
- Acción antrópica ; Análisis de regresión ; Aprovechamiento agrícola del suelo ; Bosque ; Dinamarca ; Distribución espacial ; LiDAR ; Modelo ; Modelo numérico de terreno ; Topografía (1)
- Acción antrópica ; Biomasa ; Cambio climático ; Desmonte ; Distribución espacial ; Ecosistema ; Imagen radar ; Imagen satélite ; Manglar ; Medio intertidal ; Nivel del mar ; Teledetección ; Tratamiento de datos ; Zona intertropical ; Índice de vegetación (1)
- Action anthropique ; Allemagne ; Autriche ; Baden-Württemberg ; Glissement de terrain ; Géochronologie ; LiDAR ; Modèle numérique de terrain ; Niederösterreich ; Schwäbische Alb ; Télédétection ; Versant (1)
- Action anthropique ; Alpes ; Années 1960-2006 ; Cours d'eau ; Crue ; Dynamique fluviale ; Gravier ; Ile fluviale ; Italie ; LiDAR ; Lit fluvial ; Photographie aérienne ; Piave ; Veneto ; Végétation (1)
- Action anthropique ; Analyse de régression ; Danemark ; Distribution spatiale ; Forêt ; LiDAR ; Modèle ; Modèle numérique de terrain ; Topographie ; Utilisation agricole du sol (1)
- Action anthropique ; Biomasse ; Changement climatique ; Distribution spatiale ; Déboisement ; Ecosystème ; Image radar ; Image satellite ; Indice de végétation ; Mangrove ; Milieu intertidal ; Niveau marin ; Traitement des données ; Télédétection ; Zone intertropicale (1)
- Activité solaire ; Altitude ; Analyse de régression ; Atmosphère ; Géophysique ; Lidar ; Modèle mathématique ; Ozone ; Russie d'Asie ; Sibir' Zapadnaâ ; Stratosphère ; Température ; Tomsk (1)
- Aerial and spatial archaeology : from the historical photographs to Lidar (part I). Special issue (3)
- Aerial and spatial archaeology : from the historical photographs to lidar (part II). Special issue (3)
- Concepts and implications of environmental change and human impact : studies from Austrian geomorphological research (3)
- Baie du Mont-Saint-Michel. Estuaire de Rance, Golfe normano-breton. Numéro spécial (2)
- 34th Binghamton geomorphology symposium. Ice sheet geomorphology - past and present processes and landform (1)
- A LiDAR-based analysis of stream channel cross section change across an urban–rural land-use boundary (1)
- A comparison of GPS and lidar salt marsh DEMs (1)
- A review of the status of satellite remote sensing and image processing techniques for mapping natural hazards and disasters (1)
- Accuracy of automatically extracted geomorphological breaklines from airborne LiDAR curvarure images (1)
- Aerial archaeology in Italy (1)
- Airborne LiDAR for DEM generation : some critical issues (1)
- Airborne remote sensing for archaeological application : prehistorical landscapes in Gargano area (Italy) (1)
- Application of a 3D laser scanner in the assessment of erosion and deposition volumes and channel change in a proglacial river (1)
- Application of satellite image processing techniques for Talakadu, a unique archaeological landscape in India (1)
- Applied comparison of the erosion risk models EROSION 3D and LISEM for a small catchment in Norway (1)
- Assessing the ability of airborne LiDAR to map river bathymetry (1)
- Nankin (1)
- Chine (1)
- Asie (1)
- Airborne LiDAR for DEM generation : some critical issues
- Bibliographie ; LiDAR ; Modèle numérique de terrain ; Technique de recherche ; Traitement des données ; Télédétection
- This paper reviews the recent advances of airborne LiDAR systems and the use of LiDAR data for DEM generation, with special focus on LiDAR data filters, interpolation methods, DEM resolution, and LiDAR data reduction. Separating LiDAR points
- into ground and non-ground is the most critical and difficult step for DEM generation from LiDAR data. Commonly used and most recently developed LiDAR filtering methods are presented. Interpolation methods and choices of suitable interpolator and DEM
- resolution for LiDAR DEM generation are discussed in detail. Feature specific elements such as breaklines contribute significantly to DEM quality.
- Možnosti uporabe zračnega laserskega skeniranja (LIDAR) za geomorfološke študije
- Utilisation du balayage laser aéroporté (LIDAR) pour les études géomorphologiques
- Cartographie géomorphologique ; Eboulement ; Glissement de terrain ; Géomorphologie ; Karstification ; LiDAR ; Slovénie ; Télédétection
- Geomorphological mapping ; Geomorphology ; Karstification ; Landslide ; LiDAR ; Remote sensing ; Rockfall ; Slovenia
- Cartografía geomorfológica ; Derrumbe ; Deslizamiento deterreno ; Eslovenia ; Geomorfología ; Karstificación ; LiDAR ; Teledetección
- In this paper different characteristics of Aerial laser scanning (LIDAR) are described, especially those which are important for decision, if LIDAR data are appropriate for the possible needs. The most important factors are the number of points per
- area unit (points/m2) and the positional accuracy of the LIDAR data. On the example of landslides, rockfalls and different karst features the most suitable LIDAR data sets are defined. - (IKR)
- LiDAR imagery and its critical evaluation for vegetation management and transmission power lines
- Classification ; Image radar ; LiDAR ; Ligne éléctrique ; Photo-interprétation ; Télédétection ; Végétation
- Classification ; LiDAR ; Photointerpretation ; Radar imagery ; Remote sensing ; Vegetation
- Dans cette étude, les images LiDAR ont été utilisées afin de pouvoir mieux différencier les classes de végétation en présence de lignes électriques à haute et basse tension. Les résultats montrent que le levé LiDAR fournit des altitudes précises et
- Qualitative and quantitative applications of LiDAR imagery in fluvial geomorphology
- Analyse quantitative ; Ardenne ; Bassin-versant ; Belgique ; Bilan sédimentaire ; Brabant wallon ; Fluviatile ; LiDAR ; Télédétection
- Ardenne ; Belgium ; Fluvial processes ; LiDAR ; Quantitative analysis ; Remote sensing ; Sediment budget ; Walloon Brabant ; Watershed
- The potential for geomorphological mapping and quantitative calculations of light detection and ranging (LiDAR) data within fluvial geomorphology was studied for 2 river catchments within Belgium (Dijle and Amblève), which differ in physical
- settings and floodplain morphology. Qualitative analysis of LiDAR data allowed the identification of former channel patterns, levees, colluvial hillslope and fan deposits. These results were confirmed by field data, topographic surveys and historical maps
- . The main aim of this study is to critically compare and evaluate information derived from regional LiDAR imagery and ground truth data in order to assess their suitability for geomorphological mapping in these environments. Furthermore, the AA. investigated
- whether a comparison of recent LiDAR data with historical information could be used to derive quantitative information on river and floodplain morphological changes.
- Remote sensing of coastal waters by airborne lidar and satellite radiometer. Part 1 : a model study
- Comparaison des calculs de transfert de radiation obtenus à partir de données lidar avec celles de satellite, pour éventuellement remplacer par le lidar les mesures in situ. Les mesures lidar de fluorescence de la chlorophylle A à 685 nm s'avèrent
- Assessing the ability of airborne LiDAR to map river bathymetry
- Bathymétrie ; California ; Cartographie ; Cours d'eau ; Etats-Unis ; Géométrie hydraulique ; LiDAR ; Télédétection ; Washington State
- Airborne bathymetric LiDAR was collected for 220 river kilometers in the Yakima and Trinity River Basins in the USA. Concomitant with the aerial data collection, ground surveys of the river bed were performed in both basins. The AA. assess
- the quality of the bathymetric LiDAR survey from the perspective of its application toward creating accurate, precise and complete streambed topography for numerical modelling and geomorphological assessment. Measurement error is evaluated with respect
- The effectiveness of airborne LiDAR data in the recognition of channel-bed morphology
- Alpes ; Cours d'eau ; Italie ; LiDAR ; Montagne ; Profil longitudinal ; Rugosité ; Topographie ; Télédétection
- For the purpose of this study, 0.5 m and 1 m resolution Digital Terrain Models (DTMs) were derived from the last pulse LiDAR data obtained by filtering the vegetation points. The study was conducted in a headwater catchment, the Cordon catchment
- , located in the Dolomites (Eastern Italian Alps). The results suggested a good capability of LiDAR data in the recognition of river morphology giving the potential to distinguish the riffle-pool and step-pool reaches.
- Use of LIDAR-derived images for mapping old landslides under forest
- Ardenne ; Belgique ; Cartographie ; Dynamique de versant ; Forêt ; Glissement de terrain ; Inventaire ; LIDAR ; Photo-interprétation ; Versant
- This study tested the potential of LIDAR (Light Detection and Ranging) images for mapping old landslides under forest. Landslide inventory maps were created for a 125 km2 area by applying the expert knowledge of 7 geomorphologists to LIDAR-derived
- A comparison of GPS and lidar salt marsh DEMs
- Etats-Unis ; Etude comparée ; GPS ; Ile ; LiDAR ; Marais salant ; Modèle numérique de terrain ; South Carolina ; Topographie ; Télédétection
- Comparative study ; Digital elevation model ; Global Positioning System ; Island ; LiDAR ; Remote sensing ; Salt marsh ; South Carolina ; Topography ; United States of America
- Caroline del Sur ; Estados Unidos ; Estudio comparativo ; GPS ; Isla ; LiDAR ; Modelo numérico de terreno ; Salina ; Teledetección ; Topografía
- Digital elevation models (DEMs) were compared to characterize how well airborne lidar (light detection and ranging) data depict the microtopography of a salt marsh. 72,000 GPS points and 700,000 lidar points from a 1 km2 salt marsh island were
- 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
- terrain features lidar data should be augmented with other information.
- Mapping the housing types from LIDAR data for micro-scale spatial analysis : a case of Tsukuba City
- Analyse spatiale ; Cartographie thématique ; Distribution spatiale ; Habitat urbain ; Honshū ; Japon ; LiDAR ; Logement ; Tsukuba ; Typologie ; Télédétection
- Honshu ; Housing ; Japan ; LiDAR ; Remote sensing ; Spatial analysis ; Spatial distribution ; Thematic mapping ; Typology ; Urban settlement
- Análisis espacial ; Cartografía temática ; Distribución espacial ; Japón ; LiDAR ; Teledetección ; Tipología ; Vivienda ; Vivienda urbana
- In this paper, the AA. identify the spatial distribution patterns of housing types, based on building footprints and their shapes and sizes, identified from Light Detection and Ranging (LIDAR) data. They also utilize an Internet telephone directory
- Morphological analysis of the Slovenian coast with data from LIDAR and SONAR ranging
- Adriatique mer ; Analyse des données ; Analyse spatiale ; Falaise ; Géomorphologie ; LiDAR ; Littoral ; Plate-forme d'abrasion ; Slovénie ; Télédétection
- Abrasion platform ; Adriatic Sea ; Cliff ; Coastal environment ; Data analysis ; Geomorphology ; LiDAR ; Remote sensing ; Slovenia ; Spatial analysis
- Acantilado ; Análisis de datos ; Análisis espacial ; Eslovenia ; Geomorfología ; LiDAR ; Litoral ; Mar Adriático ; Plataforma de abrasión ; Teledetección
- The coastal zone is an area with unique intertwining features. This article reveals a study of the coastal zone as an inseparable whole in three-dimensional (3D) space. According to lidar and sonar data spatial analyses were made : height or depth
- Variations in multiscale curvature distribution and signatures of LiDAR DTM errors
- Analyse statistique ; Erreur ; Géomorphométrie ; LiDAR ; Modèle ; Modèle numérique de terrain ; Télédétection
- Digital elevation model ; Error ; Geomorphometry ; LiDAR ; Model ; Remote sensing ; Statistical analysis
- Análisis estadístico ; Error ; Geomorfometría ; LiDAR ; Modelo ; Modelo numérico de terreno ; Teledetección
- This work analyzes Minimum Curvature distributions to identify the statistical signature of 2 types of LiDAR-DTM errors (outliers and striping artifacts) in the derived estimates, rather than morphology itself. The analysis shows the importance
- Sea-level rise vulnerability mapping for adaptation decisions using LiDAR DEMs
- Adaptation ; Analyse spatiale ; Cartographie thématique ; Incertitude ; Inondation ; LiDAR ; Littoral ; Méthodologie ; Niveau marin ; Stratégie d'acteurs ; Système d'information géographique ; Traitement des données ; Télédétection ; Vulnérabilité
- Adaptation ; Coastal environment ; Data processing ; Decision making process ; Geographical information system ; Inundation ; LiDAR ; Methodology ; Remote sensing ; Sea level ; Spatial analysis ; Thematic mapping ; Uncertainty ; Vulnerability
- Adaptación ; Análisis espacial ; Cartografía temática ; Estrategia de actores ; Inundación ; LiDAR ; Litoral ; Metodología ; Nivel del mar ; Sistema de información geográfica ; Teledetección ; Tratamiento de datos ; Vulnerabilidad
- This paper reviews techniques and challenges stemming from the use of Light Detection and Ranging (LiDAR) digital elevation models (DEMs) in support of sea-level rise (SLR) decision-making. Workers typically aim to reduce uncertainty by analyzing
- the difference between LiDAR error and the target SLR chosen for decision-making. The practice of mapping vulnerability to SLR is based on the assumption that LiDAR errors follow a normal distribution with zero bias, which is intermittently violated. LiDAR DEMs
- LiDAR remote sensing of forest structure
- Laser altimetry or Light Detection And Ranging (LiDAR) technology provides horizontal and vertical information at high spatial resolutions and vertical accuracies. Forest attributes such as canopy height can be directly retrieved from LiDAR data
- Années 2000 ; Bathymétrie ; Bibliographie ; Cartographie ; Dynamique fluviale ; Fluviatile ; LiDAR ; Mesure laser ; Modèle numérique de terrain ; Topographie ; Transport sédimentaire ; Télédétection
- Bathymetry ; Bibliography ; Cartography ; Digital elevation model ; Fluvial dynamics ; Fluvial processes ; LiDAR ; Remote sensing ; Sediment transport ; The 2000's ; Topography ; laser measures
- Batimetría ; Bibliografía ; Cartografía ; Dinámica fluvial ; Fluviatil ; LiDAR ; Modelo numérico de terreno ; Teledetección ; Topografía ; Transporte sedimentario
- The AA. evaluate here the use of high-resolution light detection and ranging altimetry (LiDAR) data in fluvial studies. First, they give an overview of the operation principles of different LiDAR systems. Second, they describe the steps needed
- to produce a DTM from LiDAR point elevation data and discuss the effects of floodplain land cover and surface sediment characteristics on the accuracy of LiDAR data. Third, they present a review of LiDAR applications in fluvial studies. Finally, they conclude
- Drainage network extraction using LiDAR-derived DEM in volcanic plains
- Australie ; Bassin-versant ; Cours d'eau ; Densité de drainage ; Gestion de l'eau ; LiDAR ; Modèle numérique de terrain ; Roche volcanique ; Réseau de drainage ; Télédétection ; Victoria
- Australia ; Digital elevation model ; Drainage density ; Drainage network ; LiDAR ; Remote sensing ; Stream ; Victoria ; Volcanic rock ; Water management ; Watershed
- The commonly used methods for drainage network extraction from digital elevation models (DEMs) have limitations in low-relief terrain areas. Airborne light detection and ranging (LiDAR) offers high-accuracy terrain data. With LiDAR data, high
- , including the stream orders, the numbers of streams and the stream lengths, were derived from both the LiDAR DEM and the Vicmap DEM. The LiDAR-derived DEM is shown to offer significantly more detail.
- Geostatistical estimations of bathymetric LiDAR errors on rivers
- Bathymétrie ; Biais statistique ; Cours d'eau ; Erreur ; France ; Gard ; Gardon ; Géométrie hydraulique ; Géostatistiques ; Languedoc-Roussillon ; LiDAR ; Lit fluvial ; Méthodologie
- Bathymetry ; Channel geometry ; Error ; France ; Gard ; Geostatistics ; Languedoc-Roussillon ; LiDAR ; Methodology ; River bed ; Statistical bias ; Stream
- The AA. designed a methodology to assess the quality of LiDAR topographical data within rivers using a specific geostatistical method that conducts upscaling as well as interpolation of reference data that takes into account uncertainties
- . This method uses an anisotropic block kriging from DGPS points on LiDAR footprint areas within a channel-fitted coordinate system. This assessment focused on a reach of the Gardon gravel bed river, in the south of France. LiDAR accuracy results for river
- bottom elevation show a negative bias for high depth and added to this bias a random error is also highlighted. However, this experiment shows that LiDAR provides an accurate representation of the riverbed forms. It also provided a useful, continuous
- Remote measurement of river morphology via fusion of LiDAR topography and spectrally based bathymetry
- Bathymétrie ; Cours d'eau ; Etats-Unis ; Géomorphologie fluviale ; LiDAR ; Lit fluvial ; Modèle ; Topographie ; Télédétection ; Wyoming ; Yellowstone National Park
- Bathymetry ; Fluvial geomorphology ; LiDAR ; Model ; Remote sensing ; River bed ; Stream ; Topography ; United States of America ; Wyoming
- Batimetría ; Cauce ; Corriente de agua ; Estados Unidos ; LiDAR ; Modelo ; Teledetección ; Topografía
- morphology that combines LiDAR topography with spectrally based bathymetry. Water surface elevations extracted from the LiDAR along the water's edge were used to produce a continuous water surface that preserved along-channel variations in slope. Subtracting
- local flow depths from this surface yielded estimates of the bed elevation that were then combined with LiDAR topography for exposed areas to create a composite representation of the riverine terrain. The accuracy of this terrain model was assessed via
- Kinematics of active earthflows revealed by digital image correlation and DEM subtraction techniques applied to multi-temporal LiDAR data
- Appennino ; Coulée boueuse ; Dynamique de versant ; Emilia-Romagna ; Glissement de terrain ; Italie ; LiDAR ; Modèle numérique de terrain ; Mouvement de masse ; Technique de recherche ; Versant
- Appennino ; Digital elevation model ; Emilia Romagna ; Italy ; Landslide ; LiDAR ; Mass movement ; Mudflow ; Research technique ; Slope ; Slope dynamics
- Alud de barro ; Deslizamiento deterreno ; Dinámica de vertiente ; Emilia-Romaña ; Italia ; LiDAR ; Los Apeninos ; Modelo numérico de terreno ; Movimiento de masa ; Técnica de investigación ; Vertiente
- . For this purpose they applied digital image correlation (DIC) and digital elevation model differencing (DEMoD) techniques to multi-temporal airborne LiDAR surveys of 2006, 2007 and 2009. The DIC was applied to greyscale slope gradient maps retrieved after precise
- co-registration of LiDAR surveys. Thereby, movement patterns over various sectors of the landslide were reconstructed and quantified. The DEMoD analysis revealed significant mass transfer from the source to the tracks and toe zone. In conclusion
- Estimating plot-level tree height and volume of Eucalyptus grandis plantations using small-footprint, discrete return lidar data
- Afrique du Sud ; Couvert végétal ; Eucalyptus ; Forêt ; KwaZulu-Natal ; LiDAR ; Plantation ; Traitement des données ; Télédétection
- Data processing ; Eucalyptus ; Forest ; KwaZulu-Natal ; LiDAR ; Plant canopy ; Plantation ; Remote sensing ; South Africa
- This study explores the utility of small-footprint, discrete return lidar data in deriving important forest structural attributes with the primary objective of estimating plot-level mean tree height, dominant height, and volume of Eucalyptus grandis
- plantations. The secondary objectives of the study were related to investigating the effect of lidar point densities (1 point/m2, 3 points/m2, and 5 points/m2) on height and volume estimates. Overall, the results of the study demonstrate the potential of lidar