Open AccessThe Attenuation of Love Waves and Toroidal Oscillations of the Earth
Author(s) -
Jackson David D.
Publication year - 1971
Publication title -
geophysical journal of the royal astronomical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.302
H-Index - 168
eISSN - 1365-246X
pISSN - 0016-8009
DOI - 10.1111/j.1365-246x.1971.tb02328.x
Subject(s) - attenuation , toroid , earth model , geophysics , geology , internal wave , earth (classical element) , mechanics , physics , internal friction , classical mechanics , optics , materials science , plasma , composite material , quantum mechanics , mathematical physics
Summary An attempt has been made to invert a large set of attenuation data for Love waves and toroidal oscillations in the Earth, using a recent method by Backus and Gilbert. The difficulty in finding an acceptable model of internal friction which explains the data, under the assumption that the internal friction is independent of frequency, casts doubt on the validity of this assumption. A frequency‐dependent model of internal friction is presented which is in good agreement with the seismic data and with recent experimental measurements of attenuation in rocks.