Physics
Scientific paper
Feb 1997
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1997geoji.128..270m&link_type=abstract
Geophysical Journal International, Vol. 128, No. 2, p. 270 - 284
Physics
11
Earth: Obliquity, Earth Rotation: Precession, Earth Rotation: Variations
Scientific paper
The authors compute, using many-body orbital integration routines, perturbations in the Earth's orbital elements (e.g. precession frequency, obliquity) and solar insolation associated with predicted, galciation-influenced, time-series of the precession constant H(t). The time-series are computed, in a priori calculation, using spherically symmetric, self-gravitating, Maxwell viscoelastic Earth models, gravitationally self-consistent ocean loads and two ice models constrained to yield eustatic sea-level variations that match the observed fluctuations in oxygen isotope records over the last 0.8 and 2.6 Ma. The authors also perform a series of orbital integrations that assume a time-independent perturbation to the precession constant, relative to the present-day value, for periods extending over the last 12 Ma.
Forte Alessandro M.
Mitrovica Jerry X.
Pan Ronghua
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