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Present-day deformation of the French northwestern Alps/southern Jura mountains: comparison between historical triangulations / F. Jouanne in Geophysical journal international, vol 119 n° 1 (October 1994)  

Public [article]  inGeophysical journal international > vol 119 n° 1 (October 1994) . - pp 151 - 165 Titre : Present-day deformation of the French northwestern Alps/southern Jura mountains: comparison between historical triangulations Type de document : Article/Communication Auteurs : F. Jouanne, Auteur ; G. Menard, Auteur ; Dominique Jault, Auteur Année de publication : 1994 Article en page(s) : pp 151 - 165 Note générale : bibliographie Langues : Anglais (eng) Descripteur : [Vedettes matières IGN] Géodésie physique [Termes IGN] Alpes (France) [Termes IGN] déformation de la croute terrestre [Termes IGN] Jura, massif du [Termes IGN] point géodésique [Termes IGN] triangulation Résumé : (auteur) The change of the coordinates of 44 geodetic points between two surveys, epochs 1930–36 and 1979–84 are studied. The discussion is supported by strain rate tensors and angular shear rates for different sets of three adjacent points as well as by calculated displacements together with their confidence ellipses. The southern Jura mountains may undergo a relatively homogenous pattern of deformation characterized by a roughly east—west to NE—SW compression and by a significant westward motion (5 mm yr−1) relative to the frontal Jura mountains. This deformation would be compatible with the few focal mechanisms of earthquakes available for this area. A displacement of nearly 2 cm yr−1 affected a geodetic point north of Annecy. Unfortunately, this point is the only one that shows such a movement, we cannot exclude a local displacement of this benchmark. Numéro de notice : A1994-039 Affiliation des auteurs : IGN+Ext (1940-2011) Thématique : POSITIONNEMENT Nature : Article nature-HAL : ArtAvecCL-RevueIntern DOI : 10.1111/j.1365-246X.1994.tb00919.x Date de publication en ligne : 01/10/1994 En ligne : https://doi.org/10.1111/j.1365-246X.1994.tb00919.x Format de la ressource électronique : URL article Permalink : https://documentation.ensg.eu/index.php?lvl=notice_display&id=102893 [article]