Remote sensing of bathymetry falls into 2 broad categories : non-imaging and imaging methods. The non-imaging method (as typified by LiDAR) is able to produce accurate bathymetric information over clear waters at a depth up to 70 m. However
extensive turbid coastal and inland lake waters quickly, even though concurrent depth samples are essential. The detectable depth is usually limited to 20 m. The accuracy of the retrieved bathymetry varies with water depth, with the accuracy substantially
Anomalie magnétique ; Bathymétrie ; Fosse océanique ; Fracture ; Guyot ; Géomorphologie sous-marine ; Mouvement vertical ; Niveau marin ; Océan ; Pacifique ; Paléogéographie ; Théorie
Bathymetry ; Fracture ; Magnetic anomaly ; Ocean ; Pacific Region ; Palaeogeography ; Sea level ; Seamount ; Submarine geomorphology ; Theory ; Trench ; Vertical movement
, multibeam bathymetry with nearly full coverage fails to reveal the presence of a fossil ridge. The hypothesis of Menard, therefore, is refuted. The multibeam bathymetry actually shows a different picture, that is, one of multiple zones of weakness through
Accumulation fluviatile ; Bathymétrie ; British Columbia ; Canada ; Capacité de charge ; Charge en suspension ; Delta ; Fluviatile ; Géographie physique ; Hydrodynamique ; Squamish River ; Taux de sédimentation
This paper presents the analyses of volumetric sediment yield based on comparative bathymetry of Squamish Delta and of suspended-sediment-load measurements made in Squamish Estuary.
This paper evaluates the potential for remote mapping of river bathymetry by (1) examining the theoretical basis of a simple, ratio-based technique for retrieving depth information from passive optical image data; (2) performing radiative transfer
bathymetric maps, though negative depth estimates occurred along channel margins where pixels were mixed. This study indicates that passive optical remote sensing could become a viable tool for measuring river bathymetry.
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
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
des stationnements de macreuses. Certaines composantes du milieu géographique sont apparues déterminantes : la diversité benthique, la salinité de l'eau, la bathymétrie et la granulométrie.
Anomalie magnétique ; Atlas ; Bathymétrie ; Echosondage ; Etats-Unis ; Fond sous-marin ; Golfe du Mexique ; Généralités sur la géographie ; Géophysique ; Marge continentale ; Prospection sismique ; Puerto Rico ; Sismique réflexion ; Virgin Islands
Chacune des 2 parties de cet atlas (golfe du Mexique-Puerto Rico et Virgin Islands) comporte 3 sections : 1) les mosaïques d'images sonar de la Zone avec en regard l'interprétation géologique et la bathymétrie| 2) les données de sismique-réflexion
| les données sur la bathymétrie et les anomalies magnétiques résiduelles.