Open AccessDétermination des Propriétés Élastiques ou Anélastiques du Manteau à I'Aide des Charges Dues aux Marées Océaniques
Author(s) -
Blum P. A.,
Corpel J.,
Jobert G.,
Nières J.,
Rouaud A.
Publication year - 1967
Publication title -
geophysical journal of the royal astronomical society
Language(s) - English
Resource type - Journals
eISSN - 1365-246X
pISSN - 0016-8009
DOI - 10.1111/j.1365-246x.1967.tb06238.x
Subject(s) - rigidity (electromagnetism) , tilt (camera) , physics , amplitude , geology , mathematics , geometry , optics , quantum mechanics
Summary Five clinometric stations have been installed in Normandy to determine the deformation of the ground due to tidal loads in the Channel. The attraction of the water sheet is computed for every hour during the period of observation. The effect of the deformation of the ground (tilt plus variation of attraction) is evaluated and compared to the attraction of the water loads. For an elastic body the values should be in phase and their ratio would give a mean value of the ground rigidity, varying with the distance from the coast. In fact the residues are not found exactly in phase, a result which can be attributed chiefly to an incomplete evaluation of the loads, but could be due in part to anelastic properties of the mantle.