La géothermie au Japon

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Reference

La géothermie au Japon

VUATAZ, François-David

Abstract

Les manifestations de surface naturelles de l'énergie géothermique ont été utilisées au Japon tout au long de son histoire et les stations thermales sont très nombreuses et très fréquentées . Un volcanisme actif est présent dans cet archipel, qui forme le bord nord-ouest de la ceinture orogénique du Pacifique. Les champs géothermiques sont en relation très étroite avec le volcanisme quaternaire. Il existe deux types de systèmes géothermiques distincts:

ceux qui produisent un mélange d'eau chaude et de vapeur (Otake, Hatchobaru, Onuma) et ceux qui produisent uniquement de la vapeur surchauffée (Matsukawa, Onikobe). La prospection des champs géothermiques s'effectue avec plusieurs méthodes simultanées.

L'étude géologique permet de localiser des zones favorables à la présence d'un champ géothermique telles que les systèmes de failles, les graben, les calderas, les dépressions remplies par des formations quaternaires volcaniques, l'altération hydrothermale des sols.

L'application des méthodes géochimiques donne de précieux renseignements sur les températures qui seront rencontrées dans le [...]

VUATAZ, François-David. La géothermie au Japon. Bulletin technique de la Suisse romande , 1978, vol. 104, no. 23, p. 335-340

DOI : 10.5169/SEALS-73562

Available at:

http://archive-ouverte.unige.ch/unige:138488

Disclaimer: layout of this document may differ from the published version.

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