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Auteur S. Nayak |
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Tsunami inundation modeling and mapping using ALTM- and CARTOSAT-derived coastal topographic data / S. Nayak in Marine geodesy, vol 35 n° 4 (October - December 2012)
[article]
Titre : Tsunami inundation modeling and mapping using ALTM- and CARTOSAT-derived coastal topographic data Type de document : Article/Communication Auteurs : S. Nayak, Auteur ; T. Usha, Auteur ; R. Kankara, Auteur ; N. Reddy, Auteur Année de publication : 2012 Article en page(s) : pp 429 - 440 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Cartographie thématique
[Termes IGN] cartographie des risques
[Termes IGN] données de terrain
[Termes IGN] données lidar
[Termes IGN] données localisées 3D
[Termes IGN] données topographiques
[Termes IGN] image Cartosat-1
[Termes IGN] Inde
[Termes IGN] inondation
[Termes IGN] littoral
[Termes IGN] modèle numérique de surface
[Termes IGN] tsunamiRésumé : (Auteur) Coastal topography is the principal variable that affects the movement of the tsunami wave on land. Therefore, land surface elevation data are critical to a tsunami model for computing extent of inundation. Elevation data from India's remote sensing satellite CARTOSAT-1 are available for the entire Indian coastline, while elevation data collected using Airborne Laser Terrain Mapper (ALTM) are only available for selected sections of the coastline. This study was carried out to evaluate the suitability of CARTOSAT-1 and ALTM elevation data sets in the tsunami inundation modeling. Two areas of the coastal Tamil Nadu that were severely affected during the December 2004 tsunami and surveyed extensively for mapping the extent of inundation were selected as the study areas. Elevation data sets from ALTM, CARTOSAT-1 and field measurement collected using Real-time Kinematic GPS (RTK-GPS) were compared for these areas. The accuracy of ALTM and CARTOSAT-1 data, the significance of interpolation methods and data used on model outputs were studied. The analysis clearly revealed that the elevation accuracy of CARTOSAT-1 data (+/-2m) was much lower than ALTM data (+/-0.6m). However, it was found that despite the differing elevation accuracy, both ALTM and CARTOSAT-1 can be used to produce tsunami inundation maps for open coasts with an accuracy of 185 m (2 grid cells) at 75% and 50% confidence level, respectively. Numéro de notice : A2012-669 Affiliation des auteurs : non IGN Thématique : GEOMATIQUE Nature : Article DOI : 10.1080/01490419.2011.646606 Date de publication en ligne : 04/12/2012 En ligne : https://doi.org/10.1080/01490419.2011.646606 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=32115
in Marine geodesy > vol 35 n° 4 (October - December 2012) . - pp 429 - 440[article]Exemplaires(1)
Code-barres Cote Support Localisation Section Disponibilité 230-2012041 RAB Revue Centre de documentation En réserve L003 Disponible Second GI4DM symposium / Sisi Zlatanova in GIM international, vol 21 n° 1 (January 2007)
[article]
Titre : Second GI4DM symposium Type de document : Article/Communication Auteurs : Sisi Zlatanova, Auteur ; S. Nayak, Auteur Année de publication : 2007 Article en page(s) : pp 38 - 39 Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Environnement
[Termes IGN] analyse de données
[Termes IGN] cindynique
[Termes IGN] diffusion de l'information
[Termes IGN] données multisources
[Termes IGN] information géographique
[Termes IGN] prévention des risques
[Termes IGN] risque naturel
[Termes IGN] risque technologique
[Termes IGN] visualisation de donnéesRésumé : (Auteur) Geo-information technologies are able to support management and recovery in the aftermath of manmade and natural disasters. However, disaster management also poses big challenges in all aspects of the geo-information cycle, from data collection to visualisation and communication. For the second time, the International Symposium on Geo-information for Disaster Management (Gi4DM) brought together researchers, developers, data providers and users from all over the world to discuss these challenges. Copyright Reed Business Information Numéro de notice : A2007-007 Affiliation des auteurs : non IGN Nature : Article DOI : sans Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=28373
in GIM international > vol 21 n° 1 (January 2007) . - pp 38 - 39[article]Exemplaires(1)
Code-barres Cote Support Localisation Section Disponibilité 061-07011 RAB Revue Centre de documentation En réserve L003 Disponible