Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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Record number 110198
Title Advances in the application of remote sensing and GIS for surveying mountainous land
Author(s) Mulders, M.A.
Source International Journal of applied Earth Observation and Geoinformation 3 (2001)1. - ISSN 0303-2434 - p. 3 - 10.
Department(s) Laboratory of Soil Science and Geology
Publication type Refereed Article in a scientific journal
Publication year 2001
Keyword(s) landgebruik - remote sensing - berggebieden - land use - remote sensing - mountain areas
Categories Remote Sensing
Abstract Satellite remote sensing has been practised since 1972, starting with broad channels and moderate ground resolution (Landsat MSS). In the 1980s, Landsat TM and SPOT provided for improved spatial and spectral resolutions. Many satellite images were produced in these two decades, offering a synoptic view of landscapes that were rich in contrast and that included mountainous areas. The present paper describes advances made throughout the 1990s in research on and application of remote sensing and the use of DEMs to identify landforms and landscape forming processes has become an accepted survey technique. Advances were made in the field of multi-factor approaches to spatial prediction of shallow mass movements, the application of multiple endmember spectral mixture analysis to identify land cover types, and the definition of image time series, as well as their use in component identification and monitoring of land cover (including snow). The use of steerable imaging instruments in SPOT, synthetic aperture radar (SAR) and wide scan angles in thermal infrared scanning bring specific geometric problems that have yet to be solved. SAR in particular has received increasing attention in recent research. Examples of research on radargrammetry to correct for geometric distortions in the slant range are discussed. The simulation of SAR data, aided by topographic data (DEM) of mountainous terrain, is a means to obtain better understanding and reach high geometric precision. For thematic interpretation, a variety of techniques are used, including GPS registration for measuring earth crust movements and application of remote-sensing-based vegetation indices as land quality or LAI indicators, acting as basic input for crop growth models. Great impact on the application of remote sensing can be expected in the near future from: (1) improved spatial and spectral resolution for object identification; (2) application of off-nadir viewing in stereo-modelling; and (3) improved temporal resolution, serving the monitoring of land cover (including snow) and thermal condition.
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