Astronomy and Astrophysics – Astronomy
Scientific paper
Dec 1978
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1978e%26psl..41..387r&link_type=abstract
Earth and Planetary Science Letters, Volume 41, Issue 4, p. 387-394.
Astronomy and Astrophysics
Astronomy
2
Scientific paper
Power spectrum analysis of the oxygen isotopic records of deep-sea cores cannot be directly used for correlation studies with the astronomical forcing functions because of the rapidity of the major deglaciations. The ensuing step change in the isotopic curves, repeated at somewhat irregular intervals, produces, in fact, substantial spectral energy in a wide frequency band that includes the frequencies of the precessional parameters. The isotopic fluctuations within the ramp sections of a composite core curve have been found to be highly correlated with the precessional parameters, indicating a linear response of climate to these parameters and verifying, at the same time, the essential correctness of the time scale adopted. A direct correlation of eccentricity with the major glacial/interglacial cycle is doubtful because some of the eccentricity minima have absolute values of the same order as some of the maxima, while the isotopic amplitude remains essentially constant. In order to test if the major cycle could be related to a terrestrial parameter exhibiting an asymmetric relaxation fluctuation, we have added an asymmetric saw-tooth function to an artificial curve constructed from the precessional parameters on the basis of optimal response amplitude. The curve thus generated reproduces the original isotopic curve with a similarity sufficient to warrant a close search and analysis of the relaxation process.
Emiliani Cesare
Poor Henry W.
Rooth Claes G. H.
No associations
LandOfFree
Climate response to astronomical forcing does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Climate response to astronomical forcing, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Climate response to astronomical forcing will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-886865