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Kinematics of the India-Eurasia collision zone from GPS measurements / K. Larson in Journal of geophysical research : Solid Earth, vol 104 n° 1 (01/01/1999)  

Public [article]  inJournal of geophysical research : Solid Earth > vol 104 n° 1 (01/01/1999) . - pp 1077 - 1093 Titre : Kinematics of the India-Eurasia collision zone from GPS measurements Type de document : Article/Communication Auteurs : K. Larson, Auteur ; R. Bürgmann, Auteur ; R. Bilham, Auteur ; et al., Auteur Année de publication : 1999 Article en page(s) : pp 1077 - 1093 Note générale : Bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Géodésie spatiale [Termes IGN] Cinématique [Termes IGN] faille géologique [Termes IGN] Inde [Termes IGN] Népal [Termes IGN] positionnement par GPS [Termes IGN] risque naturel [Termes IGN] tectonique Résumé : (Auteur) We use geodetic techniques to study the India-Eurasia collision zone. Six years of GPS data constrain maximum surface contraction rates across the Nepal Himalaya to 18 + 2 mm/yr at 12°N +13° (1ó). These surface rates across the 150-km-wide deforming zone are well fitted with a dislocation model of a buried north dipping detachment fault striking 105°, which aseismically slips at a rate of 20 + 1 mm/yr, our preferred estimate for the India-to-southern-Tibet convergence rate. This is in good agreement with various geologic predictions of 18 + 7 mm/yr for the Himalaya. A better fit can be achieved with a two-fault model, where the western and eastern faults strike 112° and 101°, respectively, in approximate parallelism with the Himalayan arc and a seismicity lineament. We find eastward directed extension of 11 + 3 mm/yr between northwestern Nepal Lhasa, also in good agreement with geologic and seismic studies across the southern Tibetan plateau. Continuous GPS sites are used to further constrain the style and rates of deformation throughout the collision zone. Sites in India, Uzbekistan, and Russia agree within error with plate model prediction. Numéro de notice : A1999-203 Affiliation des auteurs : non IGN Thématique : POSITIONNEMENT Nature : Article DOI : 10.1029/1998JB900043 Date de publication en ligne : 10/01/1999 En ligne : https://doi.org/10.1029/1998JB900043 Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=33333 [article]

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