Processing airborne MSS data for vegetation studies
Discusses the need of accurate processing for vegetation studies. A methodology for radiometric and atmospheric corrections is described and successfully applied.-(CB)
Data analysis ; Geographical information system ; Higher education ; Teaching of geography ; United States
Describes a course at the University of North Carolina organized under the major headings of data acquisition, data encoding, data display, and data analysis. Laboratory work on satellite image processing, GIS analysis and data output are part
Data generation processes for spatial series: the example of ephemeral channel form
in the field econometrics, are found to be more suitable for data generation processes in geomorphology. The ephemeral channel data exhibit trend stationarity and the results of spectral analysis and vector autoregression analysis of detrended channel width
On breathing and geography : explorations of data sonifications of timespace processes with illustrating examples from a tidally dynamic landscape (Severn Estuary, UK)
Data ; England ; Estuary ; Flow ; Gloucestershire ; Perception ; Space time ; Tide ; United Kingdom
This article examines breathing and geography through the explorations of data sonifications of timespace processes with illustrating examples from a tidally dynamic landscape (Severn Estuary, UK). Firstly, it sets out the principles of sonification
as a method, defining its basic principles and relating it to both qualitative and quantitative data. Secondly, it offers potential to geographic interests in process, times, rhythm, landscape, place, and more besides— ‘representing’ various aspects
of processes that are beyond normal human apprehension, perhaps through register, duration, pitch, and so on.
Dating fluvial processes from historical data and artifacts
Aerial photography ; Archaeology ; Dam ; Dating ; Fluvial processes ; Historical geography ; Hydraulic works ; Land use ; Methodology
This paper presents some applications of historical data and analysis to the study of fluvial forms and processes. Several specific approaches or techniques are presented with examples. The symbiosis of several approaches is useful for human-induced
The development of the Copenhagen Satellite Image Processing System (CHIPS) was initiated in 1985. This paper outlines the philosophy of the CHIPS development, its structure and elements of its contents, and it exemplifies its applications
and presents plans for the future development. The presented examples include the use of SPOT, Landsat and ERS-1 SAR data for land cover mapping in Denmark and Third World countries, and monitoring of agroclimatic parameters, vegetation, crops and bush fires
Error in polygon overlay processing of geomorphic data
The estimation of boundary variability for digitized polygon maps of a 0.34 km2 area of badlands in Dinosaur Provincial Park, Alberta, shows the effects of positional errors introduced during mapping and digitizing processes.
The needs towards processing of digital space-related data requires the application of computer-assisted methods in map production| the acquisition, storage, processing and output of data is to be organized as a uniform process by principles
Alps (The) ; Carrying capacity ; Fluvial processes ; Grain size distribution ; Italy ; Mountain ; River bed ; Sediment transport ; United Kingdom ; Wales
The aim of this paper is to describe steep mountain streams in terms of bed morphology, sediment features and sediment transport processes. Field data and observations from Mid-Wales and Eastern Alps streams are reported. Channel morphology
, particle size and shape are investigated in the sediment reaches of bedrock controlled streams. The data relative to 87 bedload samples are reported and the main results discussed in terms of sediment sorting processes.
With the recent advantages in computer and sensor technology, airborne remote sensing data have become a useful tool in projects dealing with natural resource inventories and environmental analysis. In this study a correction chain is developed
for digital video data acquired with an uncalibrated four-band video camera system. The study area was alpine foreland between Munich and the german Alps. In order to test the necessity of the environmental corrections overall, a digital land cover
This technical communication is divided into 4 main sections. First, the collection and processing of airborne LiDAR data undertaken by the Environment Agency are outlined and the accuracy of the data sets currently available is discussed. Second
, the choice of data on which to base geomorphological mapping, the processing necessary prior to mapping and the recognition and definition of geomorphological features are described. Third, the effects of using different classification intervals are evaluated
Operational image mosaicking - an integral component of future satellite ground processing systems
Canada ; Dataprocessing ; Environment ; Geographical information system ; Global change ; Image processing ; LANDSAT ; Remote sensing ; Satellite imagery
In order to meet the needs of large area applications such as environment and global change monitoring, satellite image mosaicking must be an integral component of future ground processing systems. The conditions necessary for the development
of an operational mosaicking capability are reviewed and shown to be met by current image processing technology. A scenario for the production of Canada-wide mosaics from LANDSAT and RADARSAT imagery is presented. - (TH)
Data base management for the hydrometric network of the Flemish region of Belgium
Applied hydrology ; Belgium ; Catchment area;Watershed ; Data bases;Data banks ; Flanders ; Water resource planning ; Water resources
Since 1980, the Hydraulics Laboratory of the State University of Ghent has been responsible for control and maintenance of the gauging stations, the stage-discharge measurements and the collection, the processing and the publication of the data
On the estimation of surface albedo using satellite data
Albedo ; Altitude ; China ; Dataprocessing ; Model ; Radiation ; Remote sensing ; Satellite imagery ; Snow
In this paper, the methods to derive the surface albedo from the satellite data are developed. In order to determine surface albedo over the China region, the corrections of altitude effect have been introduced based on ground mesure data
Bibliography ; Dataprocessing ; Digital elevation model ; Remote sensing ; Research technique
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