Manifestation of characteristic periods of oscillations of the Earth’s orbital parameters in the paleoclimatic data

Earth's Obliquity Oscillations Can Influence Climate Change by Driving Global Volcanic Activity

“…The stable isotopic ratio δ 18 O b is of special interest since its inverted (-δ 18 O b ) values reflect the temperature of abyssal ocean waters and sea level changes. Note that the sum of the -δ 18 O b modes with the periods of 20, 41 and 100 ky reproduces its main features over the past 2,000,000 years [15].…”

“…Spectral and wavelet analysis of variations in ε presented by [12], large explosive volcanic eruptions [13] and the relative content of oxygen-18 in the calcite of fossil benthic foraminifers (δ 18 O b ) [14] reveal their close phase relationships at the obliquity frequency [13,15]. The stable isotopic ratio δ 18 O b is of special interest since its inverted (-δ 18 O b ) values reflect the temperature of abyssal ocean waters and sea level changes.…”

“…To this end below sequential phase relationships of ε and explosive volcanism (E f ) with δ As was shown in [13] the E f mode lags behind ε by 2.7 ky over the past 1,200 ky. Wavelet analysis [15] reveals that the -δ 18 O b mode lags behind ε by 6.5 -7 ky. In fact the important conclusion of these two estimations is that the -δ 18 O b mode lags behind the E f mode at least by 3.8 (6.5-2.7 = 3.8) ky.…”

“…In fact the important conclusion of these two estimations is that the -δ 18 O b mode lags behind the E f mode at least by 3.8 (6.5-2.7 = 3.8) ky. It must be borne in mind that the same data on ε [12] and δ 18 O b [14] are used in [13], [15] and this paper. The method of analysis differs: it is spectral analysis in [13], and wavelet analysis in [15] and this paper.…”

“…It must be borne in mind that the same data on ε [12] and δ 18 O b [14] are used in [13], [15] and this paper. The method of analysis differs: it is spectral analysis in [13], and wavelet analysis in [15] and this paper. Let's now determine the phase lag between ε and the -δ 18 O b mode from [13] estimations.…”