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Using GIS to analyse a severe forest blowdown in the southern Rocky Mountains / J.D. Lindemann in International journal of geographical information science IJGIS, vol 16 n° 4 (june 2002)
[article]
Titre : Using GIS to analyse a severe forest blowdown in the southern Rocky Mountains Type de document : Article/Communication Auteurs : J.D. Lindemann, Auteur ; W.L. Baker, Auteur Année de publication : 2002 Article en page(s) : pp 377 - 399 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Applications SIG
[Termes IGN] analyse spatiale
[Termes IGN] Colorado (Etats-Unis)
[Termes IGN] forêt
[Termes IGN] prédiction
[Termes IGN] système d'information géographiqueRésumé : (Auteur) Many studies have helped us understand where blowdowns occur, how forests regenerate and respond to large disturbances. However, few studies have analysed how physical and biological factors affect blowdowns or interact with one another to determine susceptibility to blowdown. These factors range from the natural physical setting to past disturbances, and human-related features, such as roads and timber harvest units. These factors were examined in this study. Patches of the blown-down forest were mapped for the 1997 Routt-Divide blowdown, which affected over 10 000 ha of subalpine forest in north-central Colorado. A systematic sampling scheme was used to extract information on predictors for sampling points inside and outside the blowdown. Data on predictors were used in Classification and Regression Trees (CART) and logistic regression to model blowdown occurrence and severity. Two models were applied, and both were able to predict with an overall success rate of 75% or more. These two models produced similar results, showing that the Routt-Divide blowdown was most influenced by factors pertaining to the physical setting : distance to the Continental Divide, wind exposure, elevation, aspect, and cover type. Surprisingly, soil permeability and water-holding capacity and distance to natural edges (e.g. forest meadow) were not correlated significantly with the blowdown pattern. Numéro de notice : A2002-163 Affiliation des auteurs : non IGN Thématique : FORET/GEOMATIQUE Nature : Article DOI : 10.1080/13658810210136069 En ligne : https://doi.org/10.1080/13658810210136069 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=22078
in International journal of geographical information science IJGIS > vol 16 n° 4 (june 2002) . - pp 377 - 399[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 079-02041 RAB Revue Centre de documentation En réserve L003 Disponible Rock glacier mapping: a method utilizing enhanced TM data and GIS modeling techniques / J.R. Janke in Geocarto international, vol 16 n° 3 (September - November 2001)
[article]
Titre : Rock glacier mapping: a method utilizing enhanced TM data and GIS modeling techniques Type de document : Article/Communication Auteurs : J.R. Janke, Auteur Année de publication : 2001 Article en page(s) : pp 5 - 15 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Applications SIG
[Termes IGN] accentuation de contours
[Termes IGN] carte topographique
[Termes IGN] Colorado (Etats-Unis)
[Termes IGN] détection de contours
[Termes IGN] glacier
[Termes IGN] image Landsat-MSS
[Termes IGN] image Landsat-TM
[Termes IGN] système d'information géographiqueRésumé : (Auteur) Rock glaciers, an important component to alpine systems, have been identified as an indicator of permafrost, distribution as well as a resource for humans, serving as backdrops for residential areas, dam abutments, and a water source for urban areas. As a result, mapping is imperative ; however, a simple method for rock glacier detection has not been developed. Traditionally, rock glaciers have been mapped using field techniques or aerial photography. Spaceborne Landsat MSS data has proven to be ineffective for identifying rock glaciers. The purpose of this research is to establish a modeling procedure to identify rock glaciers of the Blanca Massif of Colorado utilizing Landsat TM data, image enhancements, and ancillary DEM data. I used a topographic normalizing function to reduce shadows, band ratios and principal components to emphasize rock glaciers, edge enhancements to detect all distinct rock glacier borders, and a 1:20,000 DEM to restrict the study area to criteria common to all rock, glaciers : elevations greater than 11,000 feet and a slope between 0° and 21°. Each of the enhancement techniques was tested individually and in combination with each other. The combination image, which utilized all of the enhancements, provided the greatest classification accuracy. The overall classification accuracy of rock glaciers in the Blanca Massif was 81.0%. Tests revealed that rock glaciers greater than 3.65 hectares can be mapped. These findings suggest that Landsat TM data, when used in conjunction with a combination of ratios, principal components, edge enhancements, and DEM data, can be used to accurately map most rock glaciers. Numéro de notice : A2001-148 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1080/10106040108542199 En ligne : https://doi.org/10.1080/10106040108542199 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=21843
in Geocarto international > vol 16 n° 3 (September - November 2001) . - pp 5 - 15[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 059-01031 RAB Revue Centre de documentation En réserve L003 Disponible Initial analysis of Landsat TM data for elk habitat mapping / T.P. Huber in International Journal of Remote Sensing IJRS, vol 11 n° 5 (May 1990)
[article]
Titre : Initial analysis of Landsat TM data for elk habitat mapping Type de document : Article/Communication Auteurs : T.P. Huber, Auteur ; K.E. Casler, Auteur Année de publication : 1990 Article en page(s) : pp 907 - 912 Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Applications de télédétection
[Termes IGN] cartographie urbaine
[Termes IGN] classification
[Termes IGN] Colorado (Etats-Unis)
[Termes IGN] habitat animal
[Termes IGN] image Landsat-TM
[Termes IGN] modèle numérique de surface
[Termes IGN] précisionRésumé : (Auteur) Preliminary classifiation of Landsat Thematic Mapper and digital elevation model (DEM) data are described for elk habitat mapping in the mountains of central Colorado, USA. This work used six different data manipulation sets for comparison and evaluation purposes. Classification of these data have relatively low accuracy rates but provide the basis upon which future, more accurate classifications will be undertaken. Numéro de notice : A1990-096 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1080/01431169008955064 En ligne : https://doi.org/10.1080/01431169008955064 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=25513
in International Journal of Remote Sensing IJRS > vol 11 n° 5 (May 1990) . - pp 907 - 912[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 080-90051 RAB Revue Centre de documentation En réserve L003 Disponible Satellite and geographic information system estimates of Colorado river basin snowpack / J.S. Ferris in Photogrammetric Engineering & Remote Sensing, PERS, vol 55 n° 11 (november 1989)
[article]
Titre : Satellite and geographic information system estimates of Colorado river basin snowpack Type de document : Article/Communication Auteurs : J.S. Ferris, Auteur ; Russell G. Congalton, Auteur Année de publication : 1989 Article en page(s) : pp 1629 - 1635 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Information géographique
[Termes IGN] Colorado (Etats-Unis)
[Termes IGN] image NOAA-AVHRR
[Termes IGN] manteau neigeux
[Termes IGN] modélisation
[Termes IGN] neige
[Termes IGN] système d'information géographiqueNuméro de notice : A1989-377 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Article DOI : sans En ligne : https://www.asprs.org/wp-content/uploads/pers/1989journal/nov/1989_nov_1629-1635 [...] Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=25336
in Photogrammetric Engineering & Remote Sensing, PERS > vol 55 n° 11 (november 1989) . - pp 1629 - 1635[article]Mapping dominant vegetation communities in the Colorado rocky mountain front range with Landsat Thematic Mapper and digital terrain data / T.D. Frank in Photogrammetric Engineering & Remote Sensing, PERS, vol 54 n° 12 (december 1988)
[article]
Titre : Mapping dominant vegetation communities in the Colorado rocky mountain front range with Landsat Thematic Mapper and digital terrain data Type de document : Article/Communication Auteurs : T.D. Frank, Auteur Année de publication : 1988 Article en page(s) : pp 1727 - 1734 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Applications de télédétection
[Termes IGN] base de données topographiques
[Termes IGN] Colorado (Etats-Unis)
[Termes IGN] données de terrain
[Termes IGN] espèce végétale
[Termes IGN] flore locale
[Termes IGN] image Landsat-TM
[Termes IGN] modèle numérique de surface
[Termes IGN] montagneNuméro de notice : A1988-299 Affiliation des auteurs : non IGN Thématique : FORET/IMAGERIE Nature : Article DOI : sans En ligne : https://www.asprs.org/wp-content/uploads/pers/1988journal/dec/1988_dec_1727-1734 [...] Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=24878
in Photogrammetric Engineering & Remote Sensing, PERS > vol 54 n° 12 (december 1988) . - pp 1727 - 1734[article]Assessing rangeland vegetation mapping alternatives for geographic information systems / S.C. Williamson in Photogrammetric Engineering & Remote Sensing, PERS, vol 54 n° 5 (may 1988)PermalinkAircraft and satellite remote sensing of desert soils and landscapes / G.W. Petersen in Remote sensing of environment, vol 23 n° 2 (01/11/1987)PermalinkEarth observation with the Seasat spaceborne imaging radar / Charles Elachi in Photo interprétation, vol 1981 n° 4 (Juillet 1981)PermalinkGéographie universelle, 2. Tome 13 Amérique septentrionale, deuxième partie États-Unis / Paul Vidal De La Blache (1936)PermalinkNouvelle géographie universelle / Elisée Reclus (1891)Permalink