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Integrating SAR and derived products into operational volcano monitoring and decision support systems / Franz J. Meyer in ISPRS Journal of photogrammetry and remote sensing, vol 100 (February 2015)
[article]
Titre : Integrating SAR and derived products into operational volcano monitoring and decision support systems Type de document : Article/Communication Auteurs : Franz J. Meyer, Auteur ; D.B. McAlpin, Auteur ; W. Gong, Auteur ; et al., Auteur Année de publication : 2015 Article en page(s) : pp 106 - 117 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Applications de télédétection
[Termes IGN] Alaska (Etats-Unis)
[Termes IGN] détection de changement
[Termes IGN] éruption volcanique
[Termes IGN] gestion des risques
[Termes IGN] image radar moirée
[Termes IGN] intégration de données
[Termes IGN] séisme
[Termes IGN] série temporelle
[Termes IGN] surveillance géologique
[Termes IGN] volcanRésumé : (auteur) Remote sensing plays a critical role in operational volcano monitoring due to the often remote locations of volcanic systems and the large spatial extent of potential eruption pre-cursor signals. Despite the all-weather capabilities of radar remote sensing and its high performance in monitoring of change, the contribution of radar data to operational monitoring activities has been limited in the past. This is largely due to: (1) the high costs associated with radar data; (2) traditionally slow data processing and delivery procedures; and (3) the limited temporal sampling provided by spaceborne radars. With this paper, we present new data processing and data integration techniques that mitigate some of these limitations and allow for a meaningful integration of radar data into operational volcano monitoring decision support systems. Specifically, we present fast data access procedures as well as new approaches to multi-track processing that improve near real-time data access and temporal sampling of volcanic systems with SAR data. We introduce phase-based (coherent) and amplitude-based (incoherent) change detection procedures that are able to extract dense time series of hazard information from these data. For a demonstration, we present an integration of our processing system with an operational volcano monitoring system that was developed for use by the Alaska Volcano Observatory (AVO). Through an application to a historic eruption, we show that the integration of SAR into systems such as AVO can significantly improve the ability of operational systems to detect eruptive precursors. Therefore, the developed technology is expected to improve operational hazard detection, alerting, and management capabilities. Numéro de notice : A2015-057 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1016/j.isprsjprs.2014.05.009 En ligne : https://doi.org/10.1016/j.isprsjprs.2014.05.009 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=75311
in ISPRS Journal of photogrammetry and remote sensing > vol 100 (February 2015) . - pp 106 - 117[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 081-2015021 RAB Revue Centre de documentation En réserve L003 Disponible Vegetation Burn Severity Mapping Using Landsat-8 and WorldView-2 / Zhuoting Wu in Photogrammetric Engineering & Remote Sensing, PERS, vol 81 n° 2 (February 2015)
[article]
Titre : Vegetation Burn Severity Mapping Using Landsat-8 and WorldView-2 Type de document : Article/Communication Auteurs : Zhuoting Wu, Auteur ; Barry Middleton, Auteur ; Robert Hetzler, Auteur ; et al., Auteur Année de publication : 2015 Article en page(s) : pp 143 - 154 Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Applications de télédétection
[Termes IGN] Arizona (Etats-Unis)
[Termes IGN] canopée
[Termes IGN] carte thématique
[Termes IGN] dommage matériel
[Termes IGN] données multitemporelles
[Termes IGN] image Landsat-8
[Termes IGN] image Worldview
[Termes IGN] incendie de forêt
[Termes IGN] ressources forestièresRésumé : (auteur) We used remotely sensed data from the Landsat-8 and WorldView-2 satellites to estimate vegetation burn severity of the Creek Fire on the San Carlos Apache Reservation, where wildfire occurrences affect the Tribe’s crucial livestock and logging industries. Accurate pre- and post-fire canopy maps at high (0.5-meter) resolution were created from WorldView-2 data to generate canopy loss maps, and multiple indices from pre- and post-fire Landsat-8 images were used to evaluate vegetation burn severity. Normalized difference vegetation index based vegetation burn severity map had the highest correlation coefficients with canopy loss map from WorldView-2. Two distinct approaches - canopy loss mapping from WorldView-2 and spectral index differencing from Landsat-8 - agreed well with the field-based burn severity estimates and are both effective for vegetation burn severity mapping. Canopy loss maps created with WorldView-2 imagery add to a short list of accurate vegetation burn severity mapping techniques that can help guide effective management of forest resources on the San Carlos Apache Reservation, and the broader fire-prone regions of the Southwest. Numéro de notice : A2015-968 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article DOI : 10.14358/PERS.81.2.143 En ligne : https://doi.org/10.14358/PERS.81.2.143 Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=80026
in Photogrammetric Engineering & Remote Sensing, PERS > vol 81 n° 2 (February 2015) . - pp 143 - 154[article]Real-time high-precision earthquake monitoring using single-frequency GPS receivers / Min Li in GPS solutions, vol 19 n° 1 (January 2015)
[article]
Titre : Real-time high-precision earthquake monitoring using single-frequency GPS receivers Type de document : Article/Communication Auteurs : Min Li, Auteur ; Wenwen Li, Auteur ; Rongxin Fang, Auteur ; Chuang Shi, Auteur ; et al., Auteur Année de publication : 2015 Article en page(s) : pp 27 - 35 Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Applications de géodésie spatiale
[Termes IGN] récepteur monofréquence
[Termes IGN] séisme
[Termes IGN] Setchouan (Chine)
[Termes IGN] surveillance géologique
[Termes IGN] vitesseRésumé : (auteur) We present a new method for high-precision real-time earthquake monitoring that focuses on station velocity using single-frequency GPS receivers. By means of GPS absolute velocity determination (AVD), real-time station velocity of millimeter per second precision can be obtained epoch by epoch using the GPS broadcast ephemeris. While the monitoring stations are considered stationary during aseismic time, the coseismic displacement can be instantaneously recorded by the velocity changes. The 1-Hz GPS data at selected stations during the M w 8.0 Wenchuan earthquake, the M w 9.0 Tohoku-Oki earthquake and the M w 6.6 Lushan earthquake are processed with the AVD approach. The results indicate that the phase and amplitude of AVD-derived velocity time series induced by the earthquakes coincide with those derived from post-mission kinematic PPP approach. Even when coseismic displacements at some stations are occasionally not visible in the position time series, the velocity series can still clearly manifest the earthquake displacement signal. With the AVD approach, the precision and reliability of the real-time monitoring can be improved significantly. It is also indicated the velocity series can be used for fast post-earthquake assessment such as rapid determination of earthquake magnitude, locating epicenter, determining seismic wave propagation velocity and other earthquake studies. Numéro de notice : A2015-203 Affiliation des auteurs : non IGN Thématique : POSITIONNEMENT Nature : Article DOI : 10.1007/s10291-013-0362-4 Date de publication en ligne : 09/01/2014 En ligne : https://doi.org/10.1007/s10291-013-0362-4 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=76016
in GPS solutions > vol 19 n° 1 (January 2015) . - pp 27 - 35[article]Intempéries : crises et postcrises. Quels retours d'expérience ? / Jean-François Gaudet (2015)
Titre : Intempéries : crises et postcrises. Quels retours d'expérience ? : extraits du colloque 7èmes rencontres géographes - assureurs, Champs-sur-marne, 5 mars 2015 Type de document : Actes de congrès Auteurs : Jean-François Gaudet, Éditeur scientifique ; Frédéric Moret, Éditeur scientifique Editeur : Niort [France] : MAIF Année de publication : 2015 Importance : 162 p. Format : 16 x 22 cm Langues : Français (fre) Descripteur : [Vedettes matières IGN] Environnement
[Termes IGN] assurance
[Termes IGN] changement climatique
[Termes IGN] gestion des risques
[Termes IGN] littoral
[Termes IGN] prévention des risquesIndex. décimale : CG2015 Actes de congrès en 2015 Résumé : (Éditeur) Cette brochure présente les principaux extraits du colloque du 5 mars 2015, organisé à Champs-sur-Marne, à l'université Paris-Est-Marne-la-Vallée, par la MAIF. Note de contenu : Un exemple concret de mission interministérielle de retour d'expérience après une catastrophe naturelle survenue récemment en France Thierry Galbert
Évaluation du coût des dommages causés par les inondations en France: quels avantages à une mutualisation des connaissances entre assureurs et gestionnaires du risque? Roland Nussbaum David Bourguignon
L'importance des systèmes techniques urbains dans la gestion des crises et postcrises Damien Serre
La gestion postcatastrophe des déchets à la suite d'une inondation Hélène Beraud
Table ronde: la gestion de crise à travers le témoignage d'acteurs de terrain Propos introductifs de Corinne Larrim Interventions de Paulette Barbe, Guirec Servan, Jean-Michel Cornet, et du lieutenant-colonel Thierry Boué
Retour d'expérience sur l'ouragan Sandy. Quels enseignements pour la gestion d'une crise majeure en France? Général Serge GarriguesNuméro de notice : 15892 Affiliation des auteurs : non IGN Nature : Actes Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=79024 Réservation
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Code-barres Cote Support Localisation Section Disponibilité 15892-01 CG2015 Livre Centre de documentation Congrès Disponible Retrieving three-dimensional displacement fields of mining areas from a single InSAR pair / Zhi Wei Li in Journal of geodesy, vol 89 n° 1 (January 2015)
[article]
Titre : Retrieving three-dimensional displacement fields of mining areas from a single InSAR pair Type de document : Article/Communication Auteurs : Zhi Wei Li, Auteur ; Zefa Yang, Auteur ; Jian Jun Zhu, Auteur ; et al., Auteur Année de publication : 2015 Article en page(s) : pp 17 - 32 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Traitement d'image radar et applications
[Termes IGN] Chine
[Termes IGN] déformation horizontale de la croute terrestre
[Termes IGN] déformation verticale de la croute terrestre
[Termes IGN] données localisées 3D
[Termes IGN] image ALOS-PALSAR
[Termes IGN] interféromètrie par radar à antenne synthétique
[Termes IGN] lever souterrain
[Termes IGN] mine de charbon
[Termes IGN] positionnement par GPS
[Termes IGN] subsidence
[Termes IGN] surveillance géologiqueRésumé : (auteur) This paper presents a novel method for retrieving three-dimensional (3-D) displacement fields of mining areas from a single interferometric synthetic aperture radar (InSAR) pair. This method fully exploits the mechanism of mining subsidence, specifically the proportional relationship between the horizontal displacement and horizontal gradient of vertical displacements caused by underground mining. This method overcomes the limitations of conventional InSAR techniques that can only measure one-dimensional (1-D) deformation of mining area along the radar line-of-sight direction. The proposed method is first validated with simulated 3-D displacement fields, which are obtained by the FLAC3D software. The root mean square errors of the 3-D displacements retrieved by the proposed method are 13.7, 27.6 and 3.6 mm for the West–East, North–South, and Up–Down components, respectively. We then apply the proposed method to estimate the 3-D displacements of the Qianyingzi and the Xuzhou coal mines in China, respectively, each along with two Advanced Land Observing Satellite (ALOS) Phased Array Type L-band Synthetic Aperture Radar images. Results show that the estimated 3-D displacement is highly consistent with that of the field surveying. This demonstrates that the proposed method is an effective approach for retrieving 3-D mining displacement fields and will play an important role in mining-related hazard prevention and environment assessment under limited InSAR acquisitions. Numéro de notice : A2015-327 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1007/s00190-014-0757-1 Date de publication en ligne : 09/09/2014 En ligne : https://doi.org/10.1007/s00190-014-0757-1 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=76652
in Journal of geodesy > vol 89 n° 1 (January 2015) . - pp 17 - 32[article]Displacement and maintenance of control points at Okinotorishima Island on Philippine Sea / Yudai Sato in Bulletin of the GeoSpatial Information authority of Japan, vol 62 (December 2014)PermalinkMotifs des incendies de forêt en Algérie : analyse comparée des dires d'experts de la Protection Civile et des Forestiers par la méthode Delphi / Ouahiba Meddour-Sahar in VertigO, vol 14 n° 3 (décembre 2014)PermalinkPost-fire selective thinning of Arbutus unedo L. coppices keeps animal diversity unchanged: the case of ants / Lidia Quevedo in Annals of Forest Science, vol 71 n° 8 (December 2014)PermalinkOn the SAR backscatter of burned forests: a model-based study in C-Band, over burned pine canopies full text / Vasileios kalogirou in IEEE Transactions on geoscience and remote sensing, vol 52 n° 10 tome 1 (October 2014)PermalinkSpatial analysis of coastal chalk cliff falls in upper Normandy (France). From Veules-les-Roses to Le Treport (2002-2009) / Pauline Letortu in Revue internationale de géomatique, vol 24 n° 3 (septembre - novembre 2014)PermalinkMapping fuels at the wildland-urban interface using colour ortho-images and Lidar data / Melissa F. Rosa in Geocarto international, vol 29 n° 5 - 6 (August - October 2014)PermalinkDiscontinuous GBSAR deformation monitoring / Michele Crosetto in ISPRS Journal of photogrammetry and remote sensing, vol 93 (July 2014)PermalinkA review of ground-based SAR interferometry for deformation measurement / Oriol Monserrat in ISPRS Journal of photogrammetry and remote sensing, vol 93 (July 2014)PermalinkLaboratory measurements of plant drying: Implications to estimate moisture content from radiative transfer models in two temperate species / Sara Jurdao in Photogrammetric Engineering & Remote Sensing, PERS, vol 80 n° 5 (May 2014)PermalinkLe projet Fresqueau : exploiter les données massives concernant les cours d'eau / Florence Le Ber in Ingénierie des systèmes d'information, ISI : Revue des sciences et technologies de l'information, RSTI, vol 19 n° 3 (mai - juin 2014)Permalink