Showing papers in "International Journal of Applied Earth Observation and Geoinformation in 2004"

TL;DR: In this paper, the extent of urban sprawl taking place over a period of nearly three decades using GIS and Remote Sensing data was analyzed and it was possible to identify the pattern of sprawl and subsequently predict the nature of future sprawl.

TL;DR: In this paper, a simple linear interpolation technique is proposed in order to derive absorption-band position, depth and asymmetry from hyperspectral image data, which can be used to bridge the gap between field geochemistry and remote sensing.

TL;DR: In this paper, an attempt has been made to study drainage morphometry and its influence on landform processes, soil physical and land erosion characteristics in Vena river basin of basaltic terrain (Deccan traps), Nagpur district, Maharashtra, Central India.

TL;DR: In this paper, a nationwide multidate GIS database was generated in order to carry out the quantification and spatial characterization of land use/cover changes (LUCC) in Mexico.

TL;DR: In this article, the utility of band depth analysis to estimate grass quantity in dense vegetation was evaluated using Cenchrus ciliaris grass, measured at canopy level in the visible spectral domain (550-750 nm) to estimate biomass.

TL;DR: In this paper, a variogram can be used to guide sampling in two ways: a sampling interval of less than half the range of spatial dependence, or using the variogram with the kriging equations to determine an optimal sampling interval to achieve a given tolerable error.

TL;DR: In this paper, the authors proposed an approach to assess the fragmentation of natural ecosystems caused by linear infrastructures based on the use of spatial indicators traditionally proposed in landscape ecological studies and of value functions.

TL;DR: In this article, the authors applied both unsupervised k-means classification and supervised minimum distance classification as derived from temporal changes in NDVI measured in 1997 along the North Eastern China Transect (NECT), and also utilized the same two classification methods together with NDVI-derived metrics, namely maximum NDVI, mean NDVI and NDVI amplitude, NDVI threshold, total length of growing season, fraction of growing seasons during greenup, rate of greenup and integrated NDVI during senescence to map vegetation.

TL;DR: In this paper, a theoretical base is presented for scaling-up leaf optical properties to whole plants and crops, by linking different optical recording techniques at leaf, plant and canopy levels through the integration of vertical nitrogen distribution.

TL;DR: In this paper, the agricultural non-point source (AGNPS) model was used for assessing soil erosion processes in Kori gauged-watershed, South Wollo zone.

TL;DR: The MODIS and ASTER sensors onboard the Terra and Aqua platforms provide substantial improvements in spatial resolution, number of spectral channels, choices of bandwidths, radiometric calibration and a much-enhanced set of pre-processed and freely available products.

TL;DR: In situ evaporation measurements were obtained for about a year at a grassland and woodland site in the Lake Naivasha basin, Kenya as mentioned in this paper, and these measurements were used to test the validity of the diurnal constancy of the partitioning of the available energy, expressed as evaporative fraction, and the extrapolation from instantaneous to daily totals.

TL;DR: In this paper, three approaches to the reduction of errors in digital elevation models (DEMs) and DEM-derived products are described: (a) using empirical knowledge, e.g. to adjust elevations using medial axes or stream networks; (b) by applying filtering operations and (c) by averaging terrain parameters derived from multiple realisations of DEM, i.e. using error propagation technique.

TL;DR: In this article, the authors examined the usefulness of radar-derived texture measures for feature identification and compared them with the original radar for digital land cover delineation, and established the relative accuracy of the resultant classifications by digital integration and comparison to validation information derived from field visitations.

TL;DR: In this article, a detailed GIS-based geomorphological map accompanied with landfill sites of Dhaka city area which can be used for multipurpose functionality has been presented, which is based upon interpretation of the oldest available aerial photographs (1:40,000) and contemporary topographic maps ( 1:8000).

TL;DR: In this paper, a general purpose segmentation algorithm capable of creating parcel boundaries from a wide range of image types is described and its performance is illustrated using Landsat ETM imagery of Eastern England.

TL;DR: In this article, a simple approach for incorporating a spatial weighting into a supervised classifier for remote sensing applications is presented, where the classifier modifies the feature-space distance-based metric with a spatial weighted weighting.

TL;DR: In this paper, a case study on the use of features derived from remote sensing data for mapping the highly fragmented semideciduous Atlantic forest in Brazil was presented, and the results showed that the maximum likelihood classification using temporal texture descriptors as extracted with wavelet transforms was most accurate to classify the semi-definite Atlantic forest.

TL;DR: In this paper, a statistical solution, based on multivariate correlation analysis among all spectral bands, is proposed to overcome the saturation problem, which can be applied for other climatic regions, such as scenes partially covered by snow, and other multi and hyper spectral sensors.

TL;DR: In this paper, a case study was carried out to try to develop a set of decision rules to obtain the dominant land uses from the existing 1:50,000-scale land cover maps.

TL;DR: In this paper, an object partitioning framework of the landscape was defined on the basis of the mount and the non-mount terrain classes as well as the isolated mountain features, and a terrain classification scheme based on cluster analysis was implemented and the landscape of the study area was mapped on a basis of mountain geomorphometry.

TL;DR: In this paper, five techniques were used to map nitrogen dioxide (NO2) concentrations in the United Kingdom using point data collected as part of the UK NO2 diffusion tube network.

TL;DR: In this article, the authors employed high-resolution Indian remote sensing satellite (IRS) data to map distinct glacier landforms belonging to the Shaune Garang glacier, comprehend different phases of glacial advance and retreat and evaluate the utility of highresolution satellite data in glacier studies.

TL;DR: In this article, an operational application of AVHRR satellite imagery in combination with the satellite-based land cover database CORINE Land Cover (CLC) for the comprehensive observation and follow-up of 10000 fire outbreaks and of their consequences in Greece during summer 2000 was described.

TL;DR: In this article, the use of advanced very high resolution radiometer (AVHRR)-derived surface temperature as a replacement for interpolated maximum air temperature in a spatial crop monitoring and yield forecasting system was explored.

TL;DR: In this article, an atmospheric correction model has been developed to retrieve the subsurface-diffused reflectance from the IRS-1C Wi-Fi bands, which gives wide scope to study dynamics of suspended sediment field.

TL;DR: In this paper, the authors analyzed the phenology of savanna ecosystems in the Llanos del Orinoco region using satellite images and applied a methodological approach to identify the most important ecosystems in Venezuela.

TL;DR: In this article, six quantitative geomatic models, with varying complexity and physical representation, were formulated to estimate canal water distribution using high-spatial resolution Landsat-7 images and a canal network stored in a GIS.

TL;DR: In this article, six very low frequency electromagnetic (VLF-EM) lines were surveyed across the expected strike of a lead sulphide lode in a mine in the Abakaliki lead/zinc field of Nigeria.

TL;DR: In this article, 15 physical and chemical variables describing 24 pedons were used to elucidate processes of soil differentiation in a humid forest environment in Southern Cameroon, including flat convex summits (FCS), linear valley slopes (LVS), colluvial inland valleys (CIV), and alluvial floodplain.