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Comparison and validation of MODIS and VEGETATION global LAI products over four BigFoot sites in North America / J. Pisek in Remote sensing of environment, vol 109 n° 1 (12 July 2007)
[article]
Titre : Comparison and validation of MODIS and VEGETATION global LAI products over four BigFoot sites in North America Type de document : Article/Communication Auteurs : J. Pisek, Auteur ; Jing M. Chen, Auteur Année de publication : 2007 Article en page(s) : pp 81 - 94 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Traitement d'image optique
[Termes IGN] Amérique du nord
[Termes IGN] analyse comparative
[Termes IGN] image SPOT-Végétation
[Termes IGN] image Terra-MODIS
[Termes IGN] Leaf Area Index
[Termes IGN] limite de résolution géométriqueRésumé : (Auteur) A new set of recently developed leaf area index (LAI) algorithms has been employed for producing a global LAI dataset at 1 km resolution and in time-steps of 10 days, using data from the Satellite pour l'observation de la terre (SPOT) VEGETATION (VGT) sensor. In this paper, this new LAI product is compared with the global MODIS Collection 4 LAI product over four validation sites in North America. The accuracy of both LAI products is assessed against seven high resolution ETM+ LAI maps derived from field measurements in 2000, 2001, and 2003. Both products were closely matched outside growing season. The MODIS product tended to be more variable than the VGT product during the summer period when the LAI was maximum. VGT and ETM+ LAI maps agreed well at three out of the four sites. The median relative absolute error of the VGT LAI product varied from 24% to 75% at 1 km scale and it ranged from 34% to 88% for the MODIS LAI product. The importance of correcting field measurements for the clumping effect is illustrated at the deciduous broadleaf forest site (HARV). Inclusion of the sub-pixel land cover information improved the quality of LAI estimates for the prairie grassland KONZ site. Further improvement of the global VGT LAI product is suggested by production and inclusion of pixel-specific global foliage clumping index and forest background reflectance maps that would serve as an input into the VGT LAI algorithms. Copyright Elsevier Numéro de notice : A2007-302 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1016/j.rse.2006.12.004 En ligne : https://doi.org/10.1016/j.rse.2006.12.004 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=28665
in Remote sensing of environment > vol 109 n° 1 (12 July 2007) . - pp 81 - 94[article]A data-mining approach to associating MISR smoke plume heights with MODIS fire measurements / D. Mazzoni in Remote sensing of environment, vol 107 n° 1-2 (15 March 2007)
[article]
Titre : A data-mining approach to associating MISR smoke plume heights with MODIS fire measurements Type de document : Article/Communication Auteurs : D. Mazzoni, Auteur ; J.A. Logan, Auteur ; D. Diner, Auteur ; et al., Auteur Année de publication : 2007 Article en page(s) : pp 138 - 148 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Applications de télédétection
[Termes IGN] aérosol
[Termes IGN] Amérique du nord
[Termes IGN] classification par réseau neuronal
[Termes IGN] classification par séparateurs à vaste marge
[Termes IGN] exploration de données
[Termes IGN] fumée
[Termes IGN] image Terra-MISR
[Termes IGN] image Terra-MODIS
[Termes IGN] incendie
[Termes IGN] nuageRésumé : (Auteur) Satellites provide unique perspectives on aerosol global and regional spatial and temporal distributions, and offer compelling evidence that visibility and air quality are affected by particulate matter transported over long distances. The heights at which emissions are injected into the atmosphere are major factors governing downwind dispersal. In order to better understand the environmental factors determining injection heights of smoke plumes from wildfires, we have developed a prototype system for automatically searching through several years of MISR and MODIS data to locate fires and the associated smoke plumes and to retrieve injection heights and other relevant measurements from them. We are refining this system and assembling a statistical database, aimed at understanding how injection height relates to the fire severity and local weather conditions. In this paper we focus on our working proof-of-concept system that demonstrates how machine-learning and data mining methods aid in processing of massive volumes of satellite data. Automated algorithms for distinguishing smoke from clouds and other aerosols, identifying plumes, and extracting height data are described. Preliminary results are presented from application to MISR and MODIS data collected over North America during the summer of 2004. Copyright Elsevier Numéro de notice : A2007-053 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1016/j.rse.2006.08.014 En ligne : https://doi.org/10.1016/j.rse.2006.08.014 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=28418
in Remote sensing of environment > vol 107 n° 1-2 (15 March 2007) . - pp 138 - 148[article]Raster-network regionalization for watershed data processing / T.L. Whiteaker in International journal of geographical information science IJGIS, vol 21 n° 3-4 (march - april 2007)
[article]
Titre : Raster-network regionalization for watershed data processing Type de document : Article/Communication Auteurs : T.L. Whiteaker, Auteur ; D.R. Maidment, Auteur ; H. Gopalan, Auteur ; et al., Auteur Année de publication : 2007 Article en page(s) : pp 341 - 353 Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Traitement d'image
[Termes IGN] ArcGIS
[Termes IGN] bassin hydrographique
[Termes IGN] données maillées
[Termes IGN] modèle hydrographique
[Termes IGN] régionalisation (segmentation)
[Termes IGN] Rio Grande (fleuve)
[Termes IGN] Texas (Etats-Unis)
[Termes IGN] variable régionaliséeRésumé : (Auteur) Difficulties exist in calculating watershed parameters from raster datasets over large regions because of the excessive computation time involved. A technique is presented which divides a large region into hydrologically distinct subregions, in each of which raster analyses are performed, in order to efficiently process large raster datasets. The results of raster analyses are stored as attributes on the resulting vector data. The vector data are then merged, and appropriate values accumulated to obtain regional parameter values for points of interest along the stream network. The technique, called Raster-Network Regionalization, uses the vector stream network as the backbone for the integration of subregions into a single region. A case study is presented which utilizes the technique to prepare geospatial inputs for the Water Rights Analysis Package simulation model. Numéro de notice : A2007-115 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article DOI : 10.1080/13658810600965255 En ligne : https://doi.org/10.1080/13658810600965255 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=28478
in International journal of geographical information science IJGIS > vol 21 n° 3-4 (march - april 2007) . - pp 341 - 353[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 079-07021 RAB Revue Centre de documentation En réserve L003 Disponible 079-07022 RAB Revue Centre de documentation En réserve L003 Disponible Kinematics of the North American–Caribbean-Cocos plates in Central America from new GPS measurements across the Polochic-Motagua fault system / H. Lyon-Caen in Geophysical research letters, vol 33 n° 19 (Octobre 2006)
[article]
Titre : Kinematics of the North American–Caribbean-Cocos plates in Central America from new GPS measurements across the Polochic-Motagua fault system Type de document : Article/Communication Auteurs : H. Lyon-Caen, Auteur ; E. Barrier, Auteur ; Cécile Lasserre, Auteur ; A. Franco, Auteur ; I. Arzu, Auteur ; L. Chiquin, Auteur ; M. Chiquin, Auteur ; Thierry Duquesnoy , Auteur ; O. Flores, Auteur ; O. Galicia, Auteur ; J. Luna, Auteur ; E. Molina, Auteur ; O. Porras, Auteur Année de publication : 2006 Article en page(s) : n° L19309 Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Géodésie physique
[Termes IGN] Amérique centrale
[Termes IGN] Amérique du nord
[Termes IGN] déformation de la croute terrestre
[Termes IGN] faille géologique
[Termes IGN] subduction
[Termes IGN] tectonique des plaquesRésumé : (auteur) The Polochic-Motagua strike-slip fault system in Guatemala marks the on-land plate boundary between the North American (NA) and the Caribbean (CA) plates. GPS observations in 1999 and 2003 show that the far-field velocity across the system (NA-CA relative velocity) is ∼20 mm/yr. This is significantly higher than the NUVEL-1A velocity but is consistent with the GPS based CA-NA velocity proposed by DeMets et al. (2000). The observations are modeled by a fault centered on the Motagua fault, locked at a depth of 20 km, with a slip-rate decreasing from eastern to central Guatemala from 20 to 12 mm/yr towards the NA-CA-Cocos triple junction. This decrease is accommodated by ∼8 mm/yr of E-W extension in the westernmost part of CA south of the Motagua fault. About 10 mm/yr of dextral slip is observed across the Mid-American Volcanic Arc. The NA-CA-Cocos triple junction is thus a complex, ∼400 km-wide wedge-shaped area. Numéro de notice : A2006-676 Affiliation des auteurs : IGN+Ext (1940-2011) Thématique : POSITIONNEMENT Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1029/2006GL027694 Date de publication en ligne : 11/10/2006 En ligne : https://doi.org/10.1029/2006GL027694 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=102947
in Geophysical research letters > vol 33 n° 19 (Octobre 2006) . - n° L19309[article]Uncertainty and confidence in land cover classification using a hybrid classifier approach / W. Liu in Photogrammetric Engineering & Remote Sensing, PERS, vol 70 n° 8 (August 2004)
[article]
Titre : Uncertainty and confidence in land cover classification using a hybrid classifier approach Type de document : Article/Communication Auteurs : W. Liu, Auteur ; Sucharita Gopal, Auteur ; Curtis E. Woodcock, Auteur Année de publication : 2004 Article en page(s) : pp 963 - 971 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Traitement d'image
[Termes IGN] Amérique du nord
[Termes IGN] classification hybride
[Termes IGN] classification par arbre de décision
[Termes IGN] classification par réseau neuronal
[Termes IGN] image NOAA-AVHRR
[Termes IGN] incertitude des données
[Termes IGN] occupation du solRésumé : (Auteur) Traditional methods of land cover classification and mapping are limited in providing spatial data on the uncertainty of map labels. In this paper, we present a hybrid classifier approach using Decision Tree (DT) and ARTMAP neural network to providing confidence or uncertainty information via majority voting and other rules. The hybrid classifier is tested with AVHRR data to mapping land cover of North America. The two classifiers (DT and ARTMAP) tend to make predictive errors in different contexts. They show 68% agreement in classifying land cover of North America. A set of rules is developed to assign class labels for pixels where the two classifiers disagree. Levels of confidence in the hybrid classification derived from their individual voting (ARTmAP) and probability (DT) are used to assign confidence. The approach outlined in this paper produces two products a hybrid classification map as well as a confidence map based on the two classification schemes. The hybrid approach seems suitable to tackle a variety of classification problems in remote sensing and may ultimately aid map users in making more informed decisions. Numéro de notice : A2004-309 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article DOI : 10.14358/PERS.70.8.963 En ligne : https://doi.org/10.14358/PERS.70.8.963 Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=26836
in Photogrammetric Engineering & Remote Sensing, PERS > vol 70 n° 8 (August 2004) . - pp 963 - 971[article]Altimeter observations of sea-level variability off the west coast of North America / J.Y. Cherniawsky in International Journal of Remote Sensing IJRS, vol 25 n° 7 (April 2004)PermalinkPermalinkLes très grandes concentrations urbaines / P. Bruyelle (2000)PermalinkBuilding a north spatial data infrastructure / David Coleman in Cartography and geographic information systems, vol 25 n° 3 (July 1998)PermalinkState geographic information activities compendium [for USA] / Council of state governments (1992)PermalinkMonitoring river ice with Landsat images / L.W. Gatto in Remote sensing of environment, vol 32 n° 1 (01/04/1990)PermalinkThe dual height system for NAD-83 / T. Vincenty in Surveying and Mapping, vol 49 n° 3 (Fall 1989)PermalinkDetecting biotic and hydrogeochemical processes in large peat basins with Landsat TM imagery / P.H. Glaser in Remote sensing of environment, vol 28 n° 1 (April - June 1989)PermalinkAnalysis of forest decline in the southern appalachians with TM data / John A. Brockhaus (1989)PermalinkNorth American Datum of 1983 / C.R. Schwarz (1989)PermalinkNon-lambertian reference panel effect on spectral reflectance measurements of freshwater ice / G.A. Leshkevich in International Journal of Remote Sensing IJRS, vol 9 n° 4 (April 1988)PermalinkRelating seasonal patterns of the AVHRR vegetation index to simulated photosynthesis and transpiration of forests in different climates / S.W. Running in Remote sensing of environment, vol 24 n° 2 (March 1988)PermalinkComparison of submarine relief features on a radar satellite image and on a Skylab satellite photograph / H. Hennings in International Journal of Remote Sensing IJRS, vol 9 n° 1 (January 1988)Permalinkvol 1987 n° 5 - 6 - Septembre 1987 - Numéro spécial archéologie en Amérique du nord (Bulletin de Photo interprétation)PermalinkStatus of NAVD 88 datum definition / David B. Zilkoski (29/03/1987)Permalink450 ans de noms de lieux français en Amérique du Nord / Commission de toponymie du gouvernement du Québec (1986)PermalinkEnglish mapping of America, 1675-1715, an informal selection of printed and manuscript maps produced during the formative years of the English map trade / Mercator society (1986)Permalink14th Pan-American general assembly / Pan-American institute of geography and history (1982)PermalinkPermalinkvol 28 n° 5 - December 1974 - Proceedings of the international symposium on problems related to the definition of North American geodetic networks, university of New Brunswick, Fredericton, Canada, may 20 to 25 1974 [actes] (Bulletin de Canadian surveyor) / Canadian institute of surveying and mappingPermalink