: Paleoclimatología: phase lag

time phenomenon > phase lag

phase lag

Because the Earth is not perfectly elastic, the tidal bulge raised by the Moon lags behind the tide-raising force and so is carried forward by the Earth's rotation. The angle between the Earth-Moon axis and the tidal bulge is termed the phase lag. The lunar attraction on the tidal bulge facing the Moon exceeds that on the more distant bulge, because tidal force decreases with distance. Consequently the Moon exerts a net torque acting about the Earth's spin axis that tends to retard the Earth's rotation, and the tidal bulge exerts a reciprocal torque that tends to accelerate the Moon's orbital motion. By this mechanism, angular momentum is transferred from the Earth's rotation to the lunar orbital motion. (Adapted from: G. E. Williams (1993), Earth-Science Reviews, 34, 1-45.)

http://data.loterre.fr/ark:/67375/QX8-ZTP6ZGF5-D

RDF/XML TURTLE JSON-LD

Loterre