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The study of subglacial movements taking place in regions of cavitation beneath the Glacier d’Argentière, has demonstrated the necessity for using several cavitometers. The very unusual conditions in which such apparatus is installed to measure simultaneously the velocity and the position of the ice vault have led us to design and produce a prototype of a portable cavitometer which records the data on magnetic tape (cassettes).
L’étude des mouvements sous-glaciaires à partir des zones de cavitation du Glacier d’Argentière, a montré la nécessité d’utiliser plusieurs cavitomètres. Les conditions très particulières dans lesquelles sont installés ces appareils qui mesurent simultanément les vitesses et les positions de la voûte de glace, ont conduit à concevoir et à réaliser un prototype de cavitomètre portable, enregistrant les données sur bandes magnétiques (cassettes).
Die Untersuchung der subglazialen Bewegung in hohlraumdurchsetzten Bereichen unter dem Glacier d’Argentière hat die Notwendigkeit des Einsatzes verschiedener Cavitometer erwiesen. Die sehr ungewöhnlichen Bedingungen, unter denen ein solches Gerät zur gleichzeitigen Messung der Geschwindigkeit und der Lage des Eisgewölbes installiert ist, führten zur Konstruktion und Bau eines Prototyps für ein tragbares Cavitometer mit Magnetbandaufzeichnung (Kassetten) für die Messdaten.
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