Deuterium record of Vostok ice core ...
Taking advantage of the fact that the Vostok deuterium (deltaD) record now covers almost two entire climatic cycles, we have applied the orbital tuning approach to derive an age-depth relation for the Vostok ice core, which is consistent with the SPECMAP marine time scale. A second age-depth relatio...
| Main Authors: | , , , , , , |
|---|---|
| Format: | Article in Journal/Newspaper |
| Language: | English |
| Published: |
PANGAEA
1995
|
| Subjects: | |
| Online Access: | https://dx.doi.org/10.1594/pangaea.733567 https://doi.pangaea.de/10.1594/PANGAEA.733567 |
| Summary: | Taking advantage of the fact that the Vostok deuterium (deltaD) record now covers almost two entire climatic cycles, we have applied the orbital tuning approach to derive an age-depth relation for the Vostok ice core, which is consistent with the SPECMAP marine time scale. A second age-depth relation for Vostok was obtained by correlating the ice isotope content with estimates of sea surface temperature from Southern Ocean core MD 88-770. Both methods lead to a close correspondence between Vostok and MD 88-770 time series. However, the coherence between the correlated deltaD and insolation is much lower than between the orbitally tuned deltaD and insolation. This reflects the lower accuracy of the correlation method with respect to direct orbital tuning. We compared the ice and marine records, set in a common temporal framework, in the time and frequency domains. Our results indicate that changes in the Antarctic air temperature quite clearly lead variations in global ice volume in the obliquity and ... : Supplement to: Waelbroeck, Claire; Jouzel, Jean; Labeyrie, Laurent D; Lorius, C; Labracherie, Monique; Stiévenard, Michel; Barkov, Nartsiss I (1995): A comparing the Vostok ice deuterium record and series from Southern Ocean core MD 88-770 over the last two glacial-interglacial cycles. Climate Dynamics, 12(2), 112-123 ... |
|---|