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A four‐dimensional agent‐based model: A case study of forest‐fire smoke propagation / Alex Smith in Transactions in GIS, vol 23 n° 3 (June 2019)  

Public [article]  inTransactions in GIS > vol 23 n° 3 (June 2019) . - pp 417 - 434 Titre : A four‐dimensional agent‐based model: A case study of forest‐fire smoke propagation Type de document : Article/Communication Auteurs : Alex Smith, Auteur ; Suzana Dragićević, Auteur Année de publication : 2019 Article en page(s) : pp 417 - 434 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Analyse spatiale [Termes IGN] Alberta (Canada) [Termes IGN] Colombie-Britannique (Canada) [Termes IGN] données 4D [Termes IGN] fumée [Termes IGN] incendie de forêt [Termes IGN] modèle orienté agent [Termes IGN] modélisation 4D [Termes IGN] risque environnemental [Termes IGN] système multi-agents Résumé : (Auteur) Dynamic geospatial complex systems are inherently four‐dimensional (4D) processes and there is a need for spatio‐temporal models that are capable of realistic representation for improved understanding and analysis. Such systems include changes of geological structures, dune formation, landslides, pollutant propagation, forest fires, and urban densification. However, these phenomena are frequently analyzed and represented with modeling approaches that consider only two spatial dimensions and time. Consequently, the main objectives of this study are to design and develop a modeling framework for 4D agent‐based modeling, and to implement the approach to the 4D case study for forest‐fire smoke propagation. The study area is central and southern British Columbia and the western parts of Alberta, Canada for forest fires that occurred in the summer season of 2017. The simulation results produced realistic spatial patterns of the smoke propagation dynamics. Numéro de notice : A2019-253 Affiliation des auteurs : non IGN Thématique : FORET/GEOMATIQUE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1111/tgis.12551 Date de publication en ligne : 29/05/2019 En ligne : https://doi.org/10.1111/tgis.12551 Format de la ressource électronique : URL Article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=93011 [article]

Plume tracking with a mobile sensor based on incomplete and imprecise information / Juliane Brink in Transactions in GIS, vol 18 n° 5 (October 2014)  

Public [article]  inTransactions in GIS > vol 18 n° 5 (October 2014) . - pp 740 – 766 Titre : Plume tracking with a mobile sensor based on incomplete and imprecise information Type de document : Article/Communication Auteurs : Juliane Brink, Auteur ; Edzer J. Pebesma, Auteur Année de publication : 2014 Article en page(s) : pp 740 – 766 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Acquisition d'image(s) et de donnée(s) [Termes IGN] fumée [Termes IGN] imprécision des données [Termes IGN] simulation [Termes IGN] traitement de données Résumé : (Auteur) Mobile in-situ sensor platforms such as Unmanned Aerial Vehicles can be used in environmental monitoring. In time-critical monitoring scenarios as for example in emergency response, and in the exploration of highly dynamic phenomena, obtaining the relevant data with one or few mobile sensors is challenging. It requires an intelligent sampling strategy that integrates prior information and adapts to the dynamics of the observed phenomenon, based on the collected sensor data. Available information about the observed phenomenon may be incomplete or imprecise and therefore insufficient for quantitative modeling. We address this problem by reasoning about the plume movement and size on a qualitative level and present an algorithm for tracking a dynamic plume that integrates this qualitative information with the collected sensor data. We evaluate our algorithm using simulated data sets of three different moving and expanding gas plumes. By means of simulations we show that the qualitative methods can be used to infer new information about the properties of a moving plume and to adapt the sensor movement for tracking the plume. Both can be done with low computational effort, without absolute positioning capability of the sensor, and with less input information than required by quantitative approaches. Numéro de notice : A2014-512 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1111/tgis.12063 Date de publication en ligne : 24/09/2013 En ligne : https://doi.org/10.1111/tgis.12063 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=74112 [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)  

Public [article]  inRemote sensing of environment > vol 107 n° 1-2 (15 March 2007) . - pp 138 - 148 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] nuage Résumé : (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 [article]

Quantitative assessment of a haze suppression methodology for satellite imagery: effect on land cover classification performance / Y. Zhang in IEEE Transactions on geoscience and remote sensing, vol 41 n° 5 (May 2003)  

Public [article]  inIEEE Transactions on geoscience and remote sensing > vol 41 n° 5 (May 2003) . - pp 1082 - 1089 Titre : Quantitative assessment of a haze suppression methodology for satellite imagery: effect on land cover classification performance Type de document : Article/Communication Auteurs : Y. Zhang, Auteur ; B. Guindon, Auteur Année de publication : 2003 Article en page(s) : pp 1082 - 1089 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Traitement d'image optique [Termes IGN] cartographie topographique [Termes IGN] classification [Termes IGN] estimation statistique [Termes IGN] fumée [Termes IGN] image Landsat-TM [Termes IGN] précision radiométrique [Termes IGN] recherche d'information [Termes IGN] représentation multiple [Termes IGN] test de performance Résumé : (Auteur) A number of haze removal methods for, satellite imagery have been described in the literature, but few papers have quantified their effectiveness within the context of a postprocessing applications scenario. In this, paper, the haze optimized transform (HOT) approach for visibleband correction is described, and its impact on classification performance is evaluated. Assessment is conducted at three levels: radiometric level of accuracy, improvement in interclass separability, and classification accuracy. Results obtained from hazy scenes and their dehazed, counterparts are compared with those from reference or "benchmark" clear scenes. Radiometric analyses of pseudoinvariant features (dense forest stands) indicate that effective haze reduction can be realized for differential HOT response levels of up to 20 for Landsat Thematic Mapper scenes. This level of atmospheric contamination is severe enough, to result in significant thematic class confusion, wherein visibleband radiances of vegetated areas are at levels normally associated with urban features under clear sky conditions. Numéro de notice : A2003-207 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1109/TGRS.2003.811817 En ligne : https://doi.org/10.1109/TGRS.2003.811817 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=22503 [article]

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Mapping continental-scale biomass burning and smoke palls over the amazon basin as observed from the space shuttle / M.R. Helfert in Photogrammetric Engineering & Remote Sensing, PERS, vol 56 n° 10 (october 1990)  

Public [article]  inPhotogrammetric Engineering & Remote Sensing, PERS > vol 56 n° 10 (october 1990) . - pp 1367 - 1373 Titre : Mapping continental-scale biomass burning and smoke palls over the amazon basin as observed from the space shuttle Type de document : Article/Communication Auteurs : M.R. Helfert, Auteur ; K.P. Lulla, Auteur Année de publication : 1990 Article en page(s) : pp 1367 - 1373 Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Applications de télédétection [Termes IGN] Amazonie [Termes IGN] forêt tropicale [Termes IGN] fumée [Termes IGN] image satellite [Termes IGN] incendie de forêt [Termes IGN] masse végétale [Termes IGN] navette spatiale [Termes IGN] photographie Skylab [Termes IGN] SkyLab [Termes IGN] spatiocarte Numéro de notice : A1990-181 Affiliation des auteurs : non IGN Thématique : FORET/IMAGERIE Nature : Article DOI : sans En ligne : https://www.asprs.org/wp-content/uploads/pers/1990journal/oct/1990_oct_1367-1373 [...] Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=25596 [article]