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Use of ASAR images to study the evolution of the Prestige oil spill off the Galician coast / J.M. Torres Palenzuela in International Journal of Remote Sensing IJRS, vol 27 n°9-10 (May 2006)  

Public [article]  inInternational Journal of Remote Sensing IJRS > vol 27 n°9-10 (May 2006) . - pp 1931 - 1950 Titre : Use of ASAR images to study the evolution of the Prestige oil spill off the Galician coast Type de document : Article/Communication Auteurs : J.M. Torres Palenzuela, Auteur ; L. Gonzales Vilas, Auteur ; M. Sacau Cuadrado, Auteur Année de publication : 2006 Article en page(s) : pp 1931 - 1950 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Applications de télédétection [Termes IGN] analyse diachronique [Termes IGN] Espagne [Termes IGN] hydrocarbure [Termes IGN] image Envisat-ASAR [Termes IGN] image radar [Termes IGN] littoral [Termes IGN] photo-interprétation [Termes IGN] pollution des mers [Termes IGN] prévention des risques [Termes IGN] risque environnemental [Termes IGN] surveillance écologique [Termes IGN] système d'information géographique Résumé : (Auteur) Space-borne synthetic aperture radar has been proven to be a useful tool for ocean oil spill monitoring due to its large coverage, independence of the day-night cycle and all-weather capability. In this paper, a method for oil spill detection based on a visual interpretation was applied to two consecutive Advanced Synthetic Aperture Radar (ASAR) images acquired during the Prestige oil spill off the Spanish coast. The obtained oil spill information was integrated into a Geographical Information System (GIS) database in order to study the spatial distribution and the evolution of the slicks between both days, in addition to carrying on a comparison with field observations. The results show the great capability of monitoring and forecasting marine oil spills caused by large oil tanker accidents by means of the use of radar imagery jointly with other information, such as wind data or in situ observations. Copyright Taylor & Francis Numéro de notice : A2006-224 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1080/01431160512331314038 En ligne : https://doi.org/10.1080/01431160512331314038 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=27951 [article]

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Assessment of ASTER land cover and MODIS data at multiple scales for ecological characterization of an arid urban center / W.L. Stefanov in Remote sensing of environment, vol 99 n° 1-2 (15 November 2005)  

Public [article]  inRemote sensing of environment > vol 99 n° 1-2 (15 November 2005) . - pp 31 - 43 Titre : Assessment of ASTER land cover and MODIS data at multiple scales for ecological characterization of an arid urban center Type de document : Article/Communication Auteurs : W.L. Stefanov, Auteur ; M. Netzband, Auteur Année de publication : 2005 Article en page(s) : pp 31 - 43 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Applications de télédétection [Termes IGN] analyse d'image numérique [Termes IGN] classification [Termes IGN] climat aride [Termes IGN] détection de changement [Termes IGN] image Terra-ASTER [Termes IGN] image Terra-MODIS [Termes IGN] impact sur l'environnement [Termes IGN] Normalized Difference Vegetation Index [Termes IGN] occupation du sol [Termes IGN] surveillance écologique [Termes IGN] surveillance météorologique [Termes IGN] urbanisation [Termes IGN] zone urbaine Résumé : (Auteur) Study of the detailed structure and ecological functioning of urban and peri-urban systems is intensifying due to increasing concentration of the human population into urban centers. Much of this increase is expected to occur in semiarid to arid cites. Data from new high spatial, temporal, and spectral resolution satellite-based sensors promise to increase our understanding of global urban ecological and climatic processes and improve city and land planning capabilities. Two of these sensors, the Advanced Spaceborne Thermal Emission and Reflection Radiometer (ASTER) and the Moderate Resolution Imaging Spectroradiometer (MODIS), provide an opportunity to compare urban spatial structure (distribution and configuration of discrete land cover/land use classes on the landscape) with contemporaneous measurements of surface biophysical composition at a variety of spatial and temporal scales. Such combined measurements are useful for modeling changes to urban climate, hydrology, and biogeochemical cycles caused by modification of the landscape. We compare gridded landscape metrics derived from expert systern land cover classification of ASTER to corresponding MODIS NDVI data at scales of 250 m/pixel, 500 m/pixel, and 1 km/pixel in order to determine which of these scales is optimal for monitoring of urban biophysical processes and landscape structure change. Weak positive and negative correlations between NDVI and landscape structure were observed at all three spatial scales for the metrics Class Area, Mean Patch Size, Edge Density, and Interspersion/Juxtaposition Index. Numéro de notice : A2005-439 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1016/j.rse.2005.04.024 En ligne : https://doi.org/10.1016/j.rse.2005.04.024 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=27575 [article]

Biodiversity surveying and monitoring: using GIS and GPS in Annapurna conservation area of Nepal / N.R. Chapagain in GIM international, vol 19 n° 7 (July 2005)

Public [article]  inGIM international > vol 19 n° 7 (July 2005) . - pp 53 - 55 Titre : Biodiversity surveying and monitoring: using GIS and GPS in Annapurna conservation area of Nepal Type de document : Article/Communication Auteurs : N.R. Chapagain, Auteur Année de publication : 2005 Article en page(s) : pp 53 - 55 Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Applications de géodésie spatiale [Termes IGN] biodiversité [Termes IGN] cartographie thématique [Termes IGN] Népal [Termes IGN] positionnement par GPS [Termes IGN] réserve naturelle [Termes IGN] surveillance écologique [Termes IGN] système d'information géographique Résumé : (Editeur) GIS and GPS enormous potential to improve existing methods of biodiversity surveying and monitoring, supporting sampling design, data collection, visualisation, analysis and data management. The author describes experience gained in the Anapurna Conservation Area of Nepal. Numéro de notice : A2005-341 Affiliation des auteurs : non IGN Thématique : BIODIVERSITE/POSITIONNEMENT Nature : Article DOI : sans Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=27477 [article]

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A quantitative comparison of methods for classifying burned areas with LISS-3 imagery / R.M. Roman-Cuesta in International Journal of Remote Sensing IJRS, vol 26 n° 9 (May 2005)  

Public [article]  inInternational Journal of Remote Sensing IJRS > vol 26 n° 9 (May 2005) . - pp 1979 - 2003 Titre : A quantitative comparison of methods for classifying burned areas with LISS-3 imagery Type de document : Article/Communication Auteurs : R.M. Roman-Cuesta, Auteur ; J. Retana, Auteur ; et al., Auteur Année de publication : 2005 Article en page(s) : pp 1979 - 2003 Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Traitement d'image [Termes IGN] analyse comparative [Termes IGN] analyse multibande [Termes IGN] classificateur paramétrique [Termes IGN] classification dirigée [Termes IGN] image IRS-LISS [Termes IGN] impact sur l'environnement [Termes IGN] incendie de forêt [Termes IGN] surveillance écologique Résumé : (Auteur) Environmental agencies frequently require tools for quick assessments of areas affected by large fires. Remote sensing techniques have been reported as efficient tools to evaluate the effects of fire. However, there exist few quantitative comparisons about the performance of the diverse methods. This study quantitatively evaluated the accuracy of five different techniques, a field survey and four satellite-based techniques, in order to quickly classify a large forest fire that occurred in 1998 in Solsonès (north-east Spain) by means of an IRS LISS-3 image. Three pure classes were determined: burned area, unburned vegetation, and bare soil; along with a non-pure class that we called mixed area. These selected techniques were included into a tree classifier to investigate their partial contribution to the final classification. The most accurate methods when focusing on pure classes were those directly related to the spectral characteristics of the pixel: Reflectance Data and Spectral Unmixing (82% of overall accuracy), versus the poorer performances of Vegetation Indices (70%), Textural measures (72%) and the field survey (68.6%). Since no image processing technique was applied to the Raw Reflectance Data, it can be considered the most cost-effective method, and the tree classifier reinforces its importance. The results of this study reveal that time consuming and expensive methods are not necessarily the most accurate, especially when potentially easily distinguishable classes are involved. Numéro de notice : A2005-258 Affiliation des auteurs : non IGN Thématique : FORET/IMAGERIE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1080/01431160512331299315 En ligne : https://doi.org/10.1080/01431160512331299315 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=27394 [article]

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Automatic detection of oil spills from SAR images / F. Nirchio in International Journal of Remote Sensing IJRS, vol 26 n° 6 (March 2005)  

Public [article]  inInternational Journal of Remote Sensing IJRS > vol 26 n° 6 (March 2005) . - pp 1157 - 1174 Titre : Automatic detection of oil spills from SAR images Type de document : Article/Communication Auteurs : F. Nirchio, Auteur ; M. Sorgente, Auteur ; et al., Auteur Année de publication : 2005 Article en page(s) : pp 1157 - 1174 Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Applications de télédétection [Termes IGN] classification [Termes IGN] détection automatique [Termes IGN] image ERS-SAR [Termes IGN] modèle stochastique [Termes IGN] pétrole [Termes IGN] pollution des mers [Termes IGN] risque environnemental [Termes IGN] surveillance écologique Résumé : (Auteur) A probalistic method has been developed that distinguishes oil spills from other similar sea surface features in synthetic aperture radar (SAR) images. It considers both the radiometric and geometric characteristics of the areas being tested. In order to minimize the operator intervention, it adopts automatic selection criteria to extract the potentially polluted areas from the images. The method has an a priori percentage of correct classification higher than 90% on the training dataset ; the performance is confirmed on a different dataset of verified slicks. Some analysis have been conducted using images with different radiometric and geometric resolutions to test its suitability with SAR images different from European Remote Sensing (ERS) satellite ones. The system and its ability to detect and classify oil and non-oil surface features are described. Starting from a set of verified oil spills detected offshore and over coastline, the ability of SAR to reveal oil spills is tested by analysing wind intensity, deduced from the images itself, and the distance from the coast. Numéro de notice : A2005-146 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1080/01431160512331326558 En ligne : https://doi.org/10.1080/01431160512331326558 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=27284 [article]

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High resolution data fusion for land degradation modelling: an environmental problem-solving in the zone of Sahel / A. Dia in GIS Geo-Informations-Systeme, vol 2004 n° 12 (Dezember 2004)

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Seabed mapping with Scalable Vector Graphics / M. Frosdick in GEO:connexion, vol 3 n° 10 (november - december 2004)

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Apport de l'imagerie spatiale optique et radar pour la détection et le suivi des zones d'orpaillage en Guyane française / Nicolas Baghdadi in Revue Française de Photogrammétrie et de Télédétection, n° 175 (Septembre 2004)

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Mapping groundwater level and depth in the Azraq Basin in Jordan using GIS / R.A. Al-Adamat in Surveying and land information science, vol 64 n° 2 (01/06/2004)

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Extending satellite remote sensing to local scales: land and water resources monitoring using high-resolution imagery / K.E. Sawaya in Remote sensing of environment, vol 88 n° 1 (30/11/2003)  

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Mangrove research and coastal ecosystem studies with SPOT-4 HRVIR and TERRA ASTER in the Arabian Gulf / Hideo Saito in International Journal of Remote Sensing IJRS, vol 24 n° 21 (November 2003)  

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Applications and research using remote sensing for rangeland management / E.R. Hunt in Photogrammetric Engineering & Remote Sensing, PERS, vol 69 n° 6 (June 2003)  

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Remote sensing techniques to assess water quality / J.C. Ritchie in Photogrammetric Engineering & Remote Sensing, PERS, vol 69 n° 6 (June 2003)

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Surveillance de la qualité de l'air par cartographie : l'approche géostatistique / M. Bobbia in Géomatique expert, n° 25 (01/05/2003)

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Demonstrating UVA-acquired real-time thermal data of fires / V.G. Ambrosia in Photogrammetric Engineering & Remote Sensing, PERS, vol 69 n° 4 (April 2003)  

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