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DEM control in Arctic Alaska with Icesat laser altimetry / D.K. Atwood in IEEE Transactions on geoscience and remote sensing, vol 45 n° 11 Tome 2 (November 2007)
[article]
Titre : DEM control in Arctic Alaska with Icesat laser altimetry Type de document : Article/Communication Auteurs : D.K. Atwood, Auteur ; R. Guritz, Auteur ; et al., Auteur Année de publication : 2007 Article en page(s) : pp 3710 - 3720 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Traitement d'image
[Termes IGN] Alaska (Etats-Unis)
[Termes IGN] altimétrie satellitaire par laser
[Termes IGN] Arctique
[Termes IGN] Arctique, océan
[Termes IGN] données ICEsat
[Termes IGN] glaciologie
[Termes IGN] GPS en mode différentiel
[Termes IGN] image ERS-SAR
[Termes IGN] image radar moirée
[Termes IGN] interféromètrie par radar à antenne synthétique
[Termes IGN] modèle numérique de surface
[Termes IGN] point d'appui
[Termes IGN] positionnement différentielRésumé : (Auteur) Use of Ice, Cloud, and land Elevation Satellite (ICESat) laser altimetry is demonstrated for control of a digital elevation model (DEM) that is synthesized from repeat-pass ERS-1 and 2 synthetic aperture radar (SAR) imagery using interferometric SAR (InSAR). Our study area is 15650 km2 of the Barrow, AK coastal plain adjacent to the Arctic Ocean; a vast expanse of tundra, lakes, and arctic wetlands of such low relief as to be nearly devoid of terrain features. The accuracy of the ICESat-derived elevation measurements is assessed by comparison with differential global positioning system (DGPS) data acquired along ICESat ground tracks. The ICESat-derived elevations have a mean accuracy, relative to the DGPS elevations, of 0.01 +0.18 m. ICESat-derived elevations on the Arctic coastal plain provide an excellent source for DEM control. We employ the ICESat-derived ground control points (GCPs) in two distinct InSAR processing steps: 1) selected points are used to perform baseline refinements, which improves the ERS-1 and 2 interferograms and 2) the ICESat-derived GCP position data (latitude, longitude, elevation) are then used as control in mosaicking multiple InSAR-derived OEMs. The resulting ICESat-controlled DEM has a mean accuracy of-1.11 + 6.3m relative to an independent standard, which is a commercial airborne InSAR-derived DEM having 0.5 m rms accuracy. This easily meets DTED-2 standards and suggests that DEMs derived using only ICESat altimetry for ground control would meet similar standards in other regions of low relief. Copyright IEEE Numéro de notice : A2007-509 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1109/TGRS.2007.904335 En ligne : https://doi.org/10.1109/TGRS.2007.904335 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=28872
in IEEE Transactions on geoscience and remote sensing > vol 45 n° 11 Tome 2 (November 2007) . - pp 3710 - 3720[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 065-07111B RAB Revue Centre de documentation En réserve L003 Disponible Generation of study of high-resolution satellite gravity over the Sumatra earthquake region / Samprit Chatterjee in International Journal of Remote Sensing IJRS, vol 28 n° 13-14 (July 2007)
[article]
Titre : Generation of study of high-resolution satellite gravity over the Sumatra earthquake region Type de document : Article/Communication Auteurs : Samprit Chatterjee, Auteur ; R. Bhattacharyya, Auteur ; T.J. Majumdar, Auteur Année de publication : 2007 Article en page(s) : pp 2915 - 2925 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Traitement d'image
[Termes IGN] anomalie de pesanteur
[Termes IGN] carte gravimétrique
[Termes IGN] déformation de la croute terrestre
[Termes IGN] données altimétriques
[Termes IGN] épicentre
[Termes IGN] gravimétrie spatiale
[Termes IGN] prévention des risques
[Termes IGN] risque naturel
[Termes IGN] séisme
[Termes IGN] Sumatra
[Termes IGN] tectonique des plaquesRésumé : (Auteur) We have utilized satellite altimetry data to generate the very high-resolution gravity anomaly maps to infer subsurface geological structures in the area of the devastating earthquake (and the corresponding tsunami) that struck the Indian Ocean near Sumatra (Indonesia) on 26 December 2004. In the present study, a high-resolution three-dimensional (3D) gravity image has been generated over a part of the eastern Indian offshore encompassing the Sumatran earthquake region apart from Ninety East Ridge, Andaman subduction zone, etc. Four latitudinal (2°, 3°, 4° and 8.6° N) gravity profiles have been generated across the epicentre (3° N/M w 9.0)/aftershock regions (4° N/M w 5.8 and 8.6° N/M w 6.0 and 6.6). A drastic change of gravity anomaly patterns (sim130 mGal) near the epicentre and the aftershock regions could be observed, which are however slowly diminishing further away from the epicentre. This gravitational difference might have been caused by the differences in plate tectonic processes. Minor/major gravitational differences in other areas may be due to the changes in densities of different lithospheric zones/sedimentary layers. Hence, our study further supports the idea that negative gravity and topography anomalies can be used as a predictor for occurrences of large earthquakes in subduction zones. Copyright Taylor & Francis Numéro de notice : A2007-336 Affiliation des auteurs : non IGN Thématique : IMAGERIE Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1080/01431160601091829 En ligne : https://doi.org/10.1080/01431160601091829 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=28699
in International Journal of Remote Sensing IJRS > vol 28 n° 13-14 (July 2007) . - pp 2915 - 2925[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 080-07081 RAB Revue Centre de documentation En réserve L003 Disponible The 26 December 2004 tsunami measured by satellite altimetry / J. Gower in International Journal of Remote Sensing IJRS, vol 28 n° 13-14 (July 2007)
[article]
Titre : The 26 December 2004 tsunami measured by satellite altimetry Type de document : Article/Communication Auteurs : J. Gower, Auteur Année de publication : 2007 Article en page(s) : pp 2897 - 2913 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Termes IGN] altimétrie satellitaire par radar
[Termes IGN] Bengale, golfe du
[Termes IGN] données altimétriques
[Termes IGN] épicentre
[Termes IGN] image Envisat
[Termes IGN] Indien (océan)
[Termes IGN] Jason
[Termes IGN] océanographie spatiale
[Termes IGN] séisme
[Termes IGN] surface de la mer
[Termes IGN] TOPEX-Poseidon
[Termes IGN] tsunami
[Vedettes matières IGN] AltimétrieRésumé : (Auteur) The 26 December 2004 magnitude 9 earthquake off Sumatra provided the first examples of travelling tsunami waves in mid-ocean clearly detected by satellite altimetry. The earthquake was the largest since satellite altimetry started in the 1970s and gave peak-to-trough wave heights in mid-ocean of over a metre. The tsunami was detected by three of the four altimeters presently giving sea surface height information. Each detected the spreading front twice, as it moved south-westwards into the Indian Ocean and as it moved northwards into the Bay of Bengal. They also detected the disturbed region closer to the epicentre that expands with the slower velocities of higher-frequency waves. Although the plate rupture is estimated to extend over about 1300 km in a north/south direction, the satellite observations appear consistent with a smaller generation area towards the south of this rupture zone. Fronts observed in the Indian Ocean show a positive first crest. Those observed in the Bay of Bengal are of smaller amplitude and appear to show a first negative first crest (trough). The structure in the Indian Ocean front observed by Jason-1 suggests the possible presence of a shorter-wavelength negative component superimposed on the positive crest. Copyright Taylor & Francis Numéro de notice : A2007-335 Affiliation des auteurs : non IGN Thématique : POSITIONNEMENT Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1080/01431160601094484 En ligne : https://doi.org/10.1080/01431160601094484 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=28698
in International Journal of Remote Sensing IJRS > vol 28 n° 13-14 (July 2007) . - pp 2897 - 2913[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 080-07081 RAB Revue Centre de documentation En réserve L003 Disponible Tidal analysis experiments with sun-synchronous satellite altimeter data / R.D. Ray in Journal of geodesy, vol 81 n° 4 (April 2007)
[article]
Titre : Tidal analysis experiments with sun-synchronous satellite altimeter data Type de document : Article/Communication Auteurs : R.D. Ray, Auteur Année de publication : 2007 Article en page(s) : pp 247 - 257 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Termes IGN] altimétrie satellitaire par radar
[Termes IGN] données altimétriques
[Termes IGN] image Envisat
[Termes IGN] image ERS
[Termes IGN] Indien (océan)
[Termes IGN] marée océanique
[Termes IGN] océanographie spatiale
[Termes IGN] orbite héliosynchrone
[Vedettes matières IGN] AltimétrieRésumé : (Auteur) The ERS-1, ERS-2 and Envisat series of satellite altimeters provide the only extensive datasets that could conceivably be usedto constrain ocean tide models in high latitudes. Their sun-synchronous sampling, however, severely limits theobservations of solar tides, especially the principal semidiurnal S2 constituent. The Munk–Cartwright response method is anatural choice when attempting to analyze sun-synchronous data. The present study examines various ways a response analysis might be implemented to extract tides from ERS data. Admittances expressed as simple linear or constant functions of frequency cansometimes improve estimates over standard parameterizations, especially if done in conjunction with a reasonably accurate priorsolution. Some form of regularization, such as ridge regression, is also shown to improve the estimates. The approach provesbeneficial in a test for the southern Indian Ocean tides. It offers some promise for regions otherwise void of usefulobservations. Copyright Springer Numéro de notice : A2007-185 Affiliation des auteurs : non IGN Thématique : POSITIONNEMENT Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1007/s00190-006-0105-1 En ligne : https://doi.org/10.1007/s00190-006-0105-1 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=28548
in Journal of geodesy > vol 81 n° 4 (April 2007) . - pp 247 - 257[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 266-07041 RAB Revue Centre de documentation En réserve L003 Disponible 266-07042 RAB Revue Centre de documentation En réserve L003 Disponible ICESat altimetry data product verification at White Sands Space Harbor / L.A. Magruder in IEEE Transactions on geoscience and remote sensing, vol 45 n° 1 (January 2007)
[article]
Titre : ICESat altimetry data product verification at White Sands Space Harbor Type de document : Article/Communication Auteurs : L.A. Magruder, Auteur ; C.E. Webb, Auteur ; T.J. Urban, Auteur ; et al., Auteur Année de publication : 2007 Article en page(s) : pp 147 - 155 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Termes IGN] altimétrie satellitaire par radar
[Termes IGN] contrôle altimétrique
[Termes IGN] détection du signal
[Termes IGN] données altimétriques
[Termes IGN] données ICEsat
[Termes IGN] ICEsat
[Termes IGN] Nouveau-Mexique (Etats-Unis)
[Termes IGN] signal laser
[Vedettes matières IGN] AltimétrieRésumé : (Auteur) Three unique techniques have been developed to validate the Ice, Cloud, and Land Elevation Satellite (ICESat) mission altimetry data product and implemented at White Sands Space Harbor (WSSH) in New Mexico. One specific technique at WSSH utilizes zenith-pointed sensors to detect the laser on the surface and enable geolocation determination of the altimeter footprint that is independent of the data product generation. The system of detectors also registers the laser light time of arrival, which is related to the data product time tag. Several overflights of the WSSH have validated these time tags to less than 3+ 1 us. The ground-based detector system also verified the laser illuminated spot geolocation to 10.6 m (3.5 arcsec) + 4.5 m on one occasion, which is consistent with the requirement of 3.5 m (1ó). A third technique using corner cube retroreflector signatures in the altimeter echo waveforms was also shown to provide an assessment of the laser spot geolocation. Although the accuracy of this technique is not equal to the other methodologies, it does offer position determination for comparison to the spacecraft altimetry data product. In addition, elevation verifications were made using the comparison of the ICESat elevation products at WSSH to those acquired with an airborne light detection and ranging. The elevation comparisons show an agreement to within + 34 cm (+ 6.7 cm under best conditions) which indicate no significant errors associated with the pointing knowledge of the altimeter. Copyright IEEE Numéro de notice : A2007-077 Affiliation des auteurs : non IGN Thématique : POSITIONNEMENT Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1109/TGRS.2006.885070 En ligne : https://doi.org/10.1109/TGRS.2006.885070 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=28442
in IEEE Transactions on geoscience and remote sensing > vol 45 n° 1 (January 2007) . - pp 147 - 155[article]Réservation
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Code-barres Cote Support Localisation Section Disponibilité 065-07011 RAB Revue Centre de documentation En réserve L003 Disponible Litto3D réunifie la terre et la mer / M. Mayo in Géomètre, n° 2031 (novembre 2006)PermalinkDetermination of evolution of the altimetric mean level of western mediterranean from the Jason-1 Data: comparison with analysis of the tidal gauge measurements / M. Haddad in Bulletin des sciences géographiques, n° 18 (octobre 2006)PermalinkDetermination of the mean sea level at Algiers Harbour from the tidal data analysis / M. Haddad in Bulletin des sciences géographiques, n° 18 (octobre 2006)PermalinkA multi-resolution approach for filtering LiDAR altimetry data / José L. Silvan-Cardenas in ISPRS Journal of photogrammetry and remote sensing, vol 61 n° 1 (October 2006)PermalinkDetermination of postglacial land uplift in Fennoscandia from leveling, tide-gauges and continuous GPS stations using least squares collocation / O. 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Morris in International Journal of Remote Sensing IJRS, vol 26 n° 23 (December 2005)PermalinkSIG et multiservices à Bordeaux / Françoise de Blomac in SIG la lettre, n° 72 (décembre 2005)PermalinkGéo évènement 2005 / Anonyme in Géomatique expert, n° 43 (01/04/2005)PermalinkTerrestrial Reference Frames effects on global sea level rise determination from Topex-Poseidon altimetric data / Laurent Morel in Advances in space research, vol 36 n° 3 (March 2005)PermalinkDSM generation and evaluation from QuickBird stereo imagery with 3D physical modelling / Thierry Toutin in International Journal of Remote Sensing IJRS, vol 25 n° 22 (November 2004)PermalinkL'altimétrie laser à balayage / Benoît Saint-Onge in Revue internationale de géomatique, vol 14 n° 3 - 4 (septembre 2004 – février 2005)PermalinkComportement de l'oscillateur DORIS/Jason au passage de l'anomalie sud-atlantique / Pascal Willis in Comptes rendus : Géoscience, tome 336 n°9 (July 2004)PermalinkAltimeter observations of sea-level variability off the west coast of North America / J.Y. 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