Cartography ; Channel geometry ; Habitat ; Image processing ; Methodology ; Remote sensing ; Satellite imagery ; Stream ; Texas ; Turbidity ; United States of America ; Watershed
This paper emphasizes digital analysis of optical imagery (as contrasted to qualitative air photo interpretation) and the mapping of in-stream or active channel features rather than floodplain environments, where classic vegetation monitoring
techniques play a major role. This paper therefore highlights and evaluates recent advances and capabilities specific to optical remote sensing of rivers. Example for the Nueces River, Texas.
Optical models of mesotrophic and eutrophic water bodies
Analyse d'image ; Eau de mer ; Généralités sur la géographie ; Matière en suspension ; Phytoplancton ; Propriété optique ; Technique de recherche ; Télédétection
Développe pour l'interprétation visuelle d'images multispectrales une instrumentation pour mesurer le spectre de radiation remontant de l'eau dans le visible, et détermine les concentrations en phytoplancton (chlorophylle-a) et en matières en
This article provides a summary of the image-processing methods which may be applied to remotely sensed data for the estimation of forest structural parameters while also acknowledging the various limitations that are presented. This review
Multitemporal analysis of remote sensing images for land study.
Multitemporal analysis allows comparison of environmental changes. The images of Xishui county of Hubei province are studied using visual interpretation supplemented by optic composition examination, following a brief introduction to other possible
Modeling floodplain inundation using an integrated GIS with radar and optical remote sensing
The AA. evaluated the ability of radar and optical Landsat TM image time-series to detect flooding within a forested wetland during a typical phenological cycle within the Roanoke River floodplain, North Carolina. Several models representing
In this review, the optical remote sensing data sources available to glacial hazard assessors are considered and the range of information on glacial environments that can be derived is analysed. The review shows that the integration of a variety
Optical remote sensing of terrestrial ecosystem primary productivity
This progress report reviews the theory and practice of mapping terrestrial primary productivity using optical remotely sensed data. Terrestrial ecosystem primary productivity is generally estimated with optical remote sensing via one
these three, models based on LUE are the primary approach. At the same time, major efforts have been dedicated to mapping vegetation canopy biochemical composition via imaging spectroscopy for use in process-based models to estimating primary productivity
. In so doing, optical remote sensing will continue to play a vital role in global carbon cycle science research.
Résultats de forages de Banka (percussion par câble), d'observations d'échantillons dans des gouffres et d'analyse des sédiments avec une cartographie géomorphologique utilisant la photographie aérienne infra-rouge, les images radar aériennes et les
images Landsat. Cinq échantillons des Sables Blancs dans l'ouest de Bornéo ont été datés à l'aide de la luminescence optique et les résultats sont comparés aux datations C 14 et par thermoluminescence d'autres échantillons de la région. Cela permet de
Catastrophe ; Image sar ; Image satellite ; Modèle numérique de terrain ; Mouvement de masse ; Pergélisol ; Photogrammétrie ; Reptation ; Risque naturel ; Réchauffement climatique ; Télédétection ; Zone froide
This paper reviews ground-based, airborne and spaceborne remote sensing methods suitable for permafrost hazard assessment and management. Digital terrain models (DTMs) derived from optical stereo, synthetic aperture radar (SAR) or laser scanning
data are some of the most important data sets for investigating permafrost-related mass movements, thaw and heave processes, and hydrological hazards. Multi-temporal optical or SAR data are used to derive surface displacements on creeping and unstable
frozen slopes. Combining DTMs with results from spectral image classification, and with multi-temporal data from change detection and displacement measurements significantly improves the detection of hazard potential.
on the explicit or implicit mapping of forest structural parameters that are related to biomass allometrically. Although opticalimages have been successfully used in mapping biomass in low biomass areas, it remains a challenge to map biomass in forested areas
This review focuses on the use of optical remote sensing in mapping leaf area index (LAI) and aboveground biomass for forests. Mapping of LAI started with location-specific empirical approaches and evolved to semi-empirical and biophysical
Interpretation of nighttime infrared digital data recorded over Belgium by the heat capacity mapping mission. A. Optical comparison of thermal map-like printouts with soil association and forest maps
of the line print and the map and of the lineprint and the Landsat multispectral colour composite by means of B and L Zoom Transfer Scope. A good correlation was found between the thermal image and the distribution pattern of major geographical units. Forests
Confocal scanning light microscopy is a valuable new method for examining the nature and progress of stone weathering at a level of resolution between optical microscopy and scanning electron microscopy. Not only is it non-destructive, but it can
The combination of polarimetric SAR with satellite SAR and optical data for classification of agricultural land
A multi-spectral SPOT image, polarimetric airborne SAR data as well as satellite based C-band SAR data have been used to perform classification of agricultural fields and areas occupied by forest and lake. Conventional Maximum Likelihood
Automation of thematic maps with electro-optical coloration methods
Rome Air Development Center (N. Y.) afin de déterminer s'il peut être utilisé pour produire des cartes thématiques. A partir de données numériques d'images, on a mis au point deux modèles analytiques pour produire des cartes.
Variations of some Patagonian glaciers, South America, using RADARSAT and Landsat images
Located at the southern end of the Andes, the Patagonia Icefield comprises the Hielo Patagónico Norte (HPN) and the Hielo Patagónico Sur (HPS). Combining RADARSAT images (1997) with either Landsat MSS (1987 for HPN) or TM (1986 for HPS), variations
of major outlet glaciers were studied. The results demonstrated that RADARSAT images provided invaluable data for the study of the glacier variation in Patagonia, where perpetual inclement weather conditions usually prohibit the acquisition of images
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 opticalimage data; (2) performing radiative transfer
) producing bathymetric maps for a pair of gravel-bed rivers from hyperspectral image data. The application of a simple algorithm, called optimal band ratio analysis (OBRA) to hyperspectral image data resulted in spatially coherent, hydraulically reasonable
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.
Années 2000 ; Bibliographie ; Humidité du sol ; Image radar ; LiDAR ; Propriétés du sol ; Rugosité ; Sol ; Télédétection
, because these 2 variables have benefited most from recent cutting-edge advances in remote sensing. The major recent advancements in spatial assessment of soil structure have emerged from optical remote sensing, while the soil moisture community has
benefited from advancements in microwave systems, justifying the focus of this paper in these specific directions. The AA. consider the newest techniques within active, passive, optical and microwave remote sensing and conclude by considering future
Généralités sur la géographie ; HCMM ; Heat Capacity mapping mission ; Image satellite ; Sol ; Taxonomie ; Température ; Température au sol ; Thermographie ; Télédétection
Training areas, representative for major land use classes were located on NMAPW outprints through superposition and optical comparison with various maps. Radiant temperature ranges, derived from the statistical analysis (STATS program) of the pixel