A comparison of the Vostok ice deuterium record and series from Southern Ocean core MD 88-770 over the last two glacial-interglacial cycles

Waelbroeck, C.; Jouzel, Jean; Labeyrie, Laurent D; Lorius, C.; Labracherie, Monique; Stiévenard, M.; Barkov, N. I.

doi:10.1007/bf00223724

Cited by 78 publications

(40 citation statements)

References 36 publications

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“…Time synchronization of heat flux and orbital insolation series is similar to the orbital tuning of glacial or marine sediments isotope records (Imbrie et al, 1984;Martinson et al, 1987;Waelbroeck et al, 1995;Shackleton, 2000;Bender et al, 2002;Parrenin et al, 2007). However, it has some special features.…”

Section: Discussionsupporting

confidence: 52%

“…Unlike conventional approach we tune another palaeoclimatic characteristics, the surface heat flux, which provides a physically reasonable shift. In Waelbroeck et al (1995) the phasing between the precession band of mid-June insolation at 65 • N and δD was found about 3 kyr (with the uncertainty ±3 kyr). A reliable estimation of the phase in the obliquity band was not obtained and therefore it was not accounted for.…”

Section: Discussionmentioning

confidence: 89%

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Late Pleistocene–Holocene ground surface heat flux changes reconstructed from borehole temperature data (the Urals, Russia)

Demezhko

Gornostaeva

2015

Clim. Past

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Abstract. We use geothermal reconstruction of the ground surface temperature (GST) history early obtained in the Middle Urals to determine the surface heat flux (SHF) history over the past 35 kyr. A new algorithm of GST-SHF transformation was applied to solve this problem. The timescale of geothermal reconstructions has been corrected by comparing the estimated heat flux and annual insolation at the latitude of 60 • N. The consistency of SHF and insolation changes on the interval 35-6 kyr BP with the linear correlation coefficient R = 0.99 points to orbital factors as the main cause of climatic changes during the Pleistocene-Holocene transition. The amplitude of SHF variations is about 1.3 % of the insolation change amplitude. The increase of carbon dioxide concentrations lagged by 2-3 kyr from the SHF increase and occurred synchronously with GST changes.

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Section: Discussionsupporting

confidence: 52%

Section: Discussionmentioning

confidence: 89%

Late Pleistocene–Holocene ground surface heat flux changes reconstructed from borehole temperature data (the Urals, Russia)

Demezhko

Gornostaeva

2015

Clim. Past

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“…A depth of 2755 m was reached in January 1994 and the core then covered two full climatic cycles (Waelbroeck et al, 1995;Jouzel et al, 1996). Then a depth of 3350 m was reached in January 1996, with an estimated age of 420 000 yr at 3310 m , a depth below which mixing of ice makes the climatic interpretation of the records more difficult .…”

Section: Deep Drillings In Antarcticamentioning

confidence: 99%

A brief history of ice core science over the last 50 yr

Jouzel

2013

Clim. Past

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104

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Abstract. For about 50 yr, ice cores have provided a wealth of information about past climatic and environmental changes. Ice cores from Greenland, Antarctica and other glacier-covered regions now encompass a variety of time scales. However, the longer time scales (e.g. at least back to the Last Glacial period) are covered by deep ice cores, the number of which is still very limited: seven from Greenland, with only one providing an undisturbed record of a part of the last interglacial period, and a dozen from Antarctica, with the longest record covering the last 800 000 yr. This article aims to summarize this successful adventure initiated by a few pioneers and their teams and to review key scientific results by focusing on climate (in particular water isotopes) and climate-related (e.g. greenhouse gases) reconstructions. Future research is well taken into account by the four projects defined by IPICS. However, it remains a challenge to get an intact record of the Last Interglacial in Greenland and to extend the Antarctic record through the mid-Pleistocene transition, if possible back to 1.5 Ma.

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“…orbital tuning) (e.g. Waelbroeck et al, 1995;Dreyfus et al, 2007;Kawamura et al, 2007); (ii) wiggle matching of ice core records to other dated paleo-archives such as ice, marine or terrestrial cores (e.g. Blunier and Brook, 2001;Waelbroeck et al, 2008); (iii) identification of dated horizons such as tephra layers, sulfate spikes or cosmogenic radionuclides spikes (e.g.…”

Section: Introductionmentioning

confidence: 99%

Volcanic synchronisation between the EPICA Dome C and Vostok ice cores (Antarctica) 0–145 kyr BP

et al. 2012

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Abstract. This study aims at refining the synchronisation between the EPICA Dome C (EDC) and Vostok ice cores in the time interval 0-145 kyr BP by using the volcanic signatures. 102 common volcanic events were identified by using continuous electrical conductivity (ECM), di-electrical profiling (DEP) and sulfate measurements while trying to minimize the distortion of the glaciological chronologies. This is an update and a continuation of previous works performed over the 0-45 kyr interval that provided 56 tie points to the ice core chronologies . This synchronisation will serve to establish Antarctic Ice Core Chronology 2012, the next synchronised Antarctic dating. A change of slope in the EDC-depth/Vostok-depth diagram is probably related to a change of accumulation regime as well as to a change of ice thickness upstream of the Lake Vostok, but we did not invoke any significant temporal change of surface accumulation at EDC relative to Vostok. No significant phase difference is detected between the EDC and Vostok isotopic records, but depth shifts between the Vostok 3G and 5G ice cores prevent from looking at this problem accurately. Three possible candidates for the Toba volcanic super-eruption ∼73 kyr ago are suggested in the Vostok and EDC volcanic records. Neither the ECM, DEP nor the sulfate fingerprints for these 3 events are significantly larger than many others in the records.

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A comparison of the Vostok ice deuterium record and series from Southern Ocean core MD 88-770 over the last two glacial-interglacial cycles

Cited by 78 publications

References 36 publications

Late Pleistocene–Holocene ground surface heat flux changes reconstructed from borehole temperature data (the Urals, Russia)

Late Pleistocene–Holocene ground surface heat flux changes reconstructed from borehole temperature data (the Urals, Russia)

A brief history of ice core science over the last 50 yr

Volcanic synchronisation between the EPICA Dome C and Vostok ice cores (Antarctica) 0–145 kyr BP

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