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Short-term vegetation succession and erosion identified by airborne remote sensing of Westerschelde salt marshes, the Netherlands / A.G. Thomson in International Journal of Remote Sensing IJRS, vol 25 n° 20 (October 2004)  

Public [article]  inInternational Journal of Remote Sensing IJRS > vol 25 n° 20 (October 2004) . - pp 4151 - 4176 Titre : Short-term vegetation succession and erosion identified by airborne remote sensing of Westerschelde salt marshes, the Netherlands Type de document : Article/Communication Auteurs : A.G. Thomson, Auteur ; A. Huiskes, Auteur Année de publication : 2004 Article en page(s) : pp 4151 - 4176 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Applications de télédétection [Termes IGN] alluvion [Termes IGN] analyse diachronique [Termes IGN] détection de changement [Termes IGN] érosion hydrique [Termes IGN] estuaire [Termes IGN] image CASI [Termes IGN] inondation [Termes IGN] marais salé [Termes IGN] marée fluviale [Termes IGN] Normalized Difference Vegetation Index [Termes IGN] Pays-Bas [Termes IGN] plante halophile Résumé : (Auteur) The Westerschelde estuary is the only major uncontrolled estuary in the south of The Netherlands. More than 15000 ships per year use it to access the Belgian port of Antwerp. A major dredging operation along the Westerschelde in the late 1990s has changed the tidal regime and increased tidal inundation of the salt marshes at high tide. Airborne remote sensing (CASI) has been acquired in 1998 and 2000 for three salt marsh sites in the Westerschelde estuary. An additional dataset exists for one site for 1993. The CASI data have been classified into maps of salt marsh vegetation. These provide an input for GIS-based modelling of sediment erosion/accretion. Maps of Normalized Difference Vegetation Index (NDVI) values allow change detection: successional change of salt marsh vegetation is clearly demonstrated. The 1993, 1998 and 2000 data show a successional trend between 1993 and 1998 that is, in part, reversing between 1998 and 2000. Data also showed significant erosion of the salt marsh edge. Data are being used to extrapolate field measurements and help produce sediment budgets for the individual salt marshes. Numéro de notice : A2004-421 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1080/01431160310001647688 En ligne : https://doi.org/10.1080/01431160310001647688 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=26948 [article]

Exemplaires(1)

Code-barres	Cote	Support	Localisation	Section	Disponibilité
080-04181	RAB	Revue	Centre de documentation	En réserve L003	Exclu du prêt

The UK land cover map 2000: construction of a parcel-based vector map from satellite images / R.M. Fuller in Cartographic journal (the), vol 39 n° 1 (June 2002)  

Public [article]  inCartographic journal (the) > vol 39 n° 1 (June 2002) . - pp 15 - 25 Titre : The UK land cover map 2000: construction of a parcel-based vector map from satellite images Type de document : Article/Communication Auteurs : R.M. Fuller, Auteur ; Gm. Smith, Auteur ; J.M. Sanderson, Auteur ; R.A. Hill, Auteur ; A.G. Thomson, Auteur Année de publication : 2002 Article en page(s) : pp 15 - 25 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Cartographie thématique [Termes IGN] base de données d'occupation du sol [Termes IGN] carte d'occupation du sol [Termes IGN] classificateur paramétrique [Termes IGN] classification dirigée [Termes IGN] Grande-Bretagne [Termes IGN] historique des données [Termes IGN] identification automatique [Termes IGN] image satellite [Termes IGN] Royaume-Uni [Termes IGN] vectorisation Résumé : (Auteur) Land Cover Map 2000 (LCM2000) is a thematic classification of satellite image data covering the entire United Kingdom. The map updates and substantially upgrades the Land Cover Map of Great Britain (LCMGB), made in 1990-92. This paper outlines the character of the map through a description of its specification, production and outputs. The paper is aimed at users of LCM2000 and derived data who need to understand more of the map and its characteristics. The paper also outlines plans for making data available to researchers and applied users. The most important development in LCM2000 was the spectral segmentation of images to generate vector land parcels. Land cover was then identified by the spectral classification of the image data in these parcels. Classification used specially developed procedures which exploited known spatial, spectral and contextual characteristics of land cover. The resultant GIS incorporates, within its vector structure, detailed attribute data which record parcel-based land cover, plus information on class probabilities, data on withinparcel heterogeneity, information on landscape structure and context, cover information from LCMGB, together with a record of each parcel's processing history. Numéro de notice : A2002-171 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1179/caj.2002.39.1.15 En ligne : https://www.tandfonline.com/doi/abs/10.1179/caj.2002.39.1.15 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=22086 [article]

Exemplaires(1)

Code-barres	Cote	Support	Localisation	Section	Disponibilité
030-02011	RAB	Revue	Centre de documentation	En réserve L003	Disponible

Effects of topography on radiance from upland vegetation in north Wales / A.G. Thomson in International Journal of Remote Sensing IJRS, vol 11 n° 5 (May 1990)  

Public [article]  inInternational Journal of Remote Sensing IJRS > vol 11 n° 5 (May 1990) . - pp 829 - 840 Titre : Effects of topography on radiance from upland vegetation in north Wales Type de document : Article/Communication Auteurs : A.G. Thomson, Auteur ; C. Jones, Auteur Année de publication : 1990 Article en page(s) : pp 829 - 840 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Traitement d'image [Termes IGN] détail topographique [Termes IGN] flore locale [Termes IGN] Pays de Galles [Termes IGN] pente [Termes IGN] photosynthèse [Termes IGN] pixel [Termes IGN] prairie [Termes IGN] radiance [Termes IGN] Thematic Mapper Résumé : (Auteur) Radiance data from a Landsat 5 Thematic Mapper image were used to study terrain effects in 284 4 pixel by 4 pixel quadrats in upland North Wales. The three semi-natural vegetation types examined responded differently to variations in slope and aspect. Short-cropped Agrostis grassland was the most uniform type ; and it reflected radiation in a solar-orientated diffuse manner. Variations in radiance detected from two rougher vegetation types suggested environmentally induced heterogeneity within the vegetation cover, related to aspect (Nardus grassland) or slope (Calluna heathland). The difference between reflected red and green light is proposed as a crude measure of photosynthesis that can discriminate between broad vegetation categories in undulating terrain. Numéro de notice : A1990-090 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1080/01431169008955058 En ligne : https://doi.org/10.1080/01431169008955058 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=25507 [article]

Exemplaires(1)

Code-barres	Cote	Support	Localisation	Section	Disponibilité
080-90051	RAB	Revue	Centre de documentation	En réserve L003	Disponible

Population densities of sheep related to Landsat Thematic Mapper radiance / A.G. Thomson in International Journal of Remote Sensing IJRS, vol 10 n° 12 (December 1989)  

Public [article]  inInternational Journal of Remote Sensing IJRS > vol 10 n° 12 (December 1989) . - pp 1907 - 1912 Titre : Population densities of sheep related to Landsat Thematic Mapper radiance Type de document : Article/Communication Auteurs : A.G. Thomson, Auteur ; Carl Milner, Auteur Année de publication : 1989 Article en page(s) : pp 1907 - 1912 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Applications de télédétection [Termes IGN] bande infrarouge [Termes IGN] corrélation [Termes IGN] image Landsat-TM [Termes IGN] Normalized Difference Vegetation Index [Termes IGN] ovin [Termes IGN] Pays de Galles [Termes IGN] population animale [Termes IGN] radiance Numéro de notice : A1989-406 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1080/01431168908904019 En ligne : https://doi.org/10.1080/01431168908904019 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=25365 [article]

Exemplaires(1)

Code-barres	Cote	Support	Localisation	Section	Disponibilité
080-89111	RAB	Revue	Centre de documentation	En réserve L003	Disponible