Book ChapterDOI
The Biological Pump in the Past
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In this paper, the authors review the concepts, tools, and observations relating to this topic and integrate these findings into a proposed recipe for the major dynamics driving CO2 change over the past 800,000 years.Abstract:
The ocean's ‘biological pump’ refers to the coupled biological, chemical, and physical processes that work to concentrate carbon and other biologically active elements in the voluminous ocean interior, sequestering them from the surface ocean and the atmosphere. Current research seeks to understand the relationship of the ocean's biological pump to the Earth's environmental, chemical, and climatic history. Changes in the efficiency of the biological pump are central to most current hypotheses for the cause of the coherent variations of atmospheric CO2 over the ice age climate cycles (i.e., glacial vs. interglacial stages). Here, we review the concepts, tools, and observations relating to this topic. While the biological pump is driven by biological activity in the sunlit surface ocean, its global efficiency is shown to be affected by the ocean's physical circulation, and its net effect on atmospheric CO2 is shown to work through the ocean's acid–base chemistry. We integrate these findings into a proposed recipe for the major dynamics driving CO2 change over the past 800 000 years.read more
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Journal Article
Contribution of Southern Ocean surface-water stratification to low atmospheric CO 2 concentrations during the last glacial period
TL;DR: The nitrogen-isotope record preserved in Southern Ocean sediments, along with several geochemical tracers for the settling fluxes of biogenic matter, reveals patterns of past nutrient supply to phytoplankton and surface-water stratification in this oceanic region as mentioned in this paper.
Book ChapterDOI
Chapter Seven Paleoceanographical Proxies Based on Deep-Sea Benthic Foraminiferal Assemblage Characteristics
TL;DR: In this paper, the authors focus on the paleoceanographic proxies based on deep-sea benthic foraminiferal assemblage characteristics, and present the following three proxy relationships that are promising: those between BFR faunas and BFR oxygenation, export productivity, and deep sea water mass characteristics.
Journal ArticleDOI
Compilation and time-series analysis of a marine carbonate δ18O, δ13C, 87Sr/86Sr and δ34S database through Earth history
TL;DR: In this paper, the same authors used trend, correlation, wavelet, and spectral analysis on Gaussian-filtered isotope records to detect and quantify similarities and patterns in temporal records.
Journal ArticleDOI
Anthropogenic pollution of aquatic ecosystems: Emerging problems with global implications
Donat-P. Häder,Anastazia T. Banaszak,Virginia E. Villafañe,Virginia E. Villafañe,Maite Andrea Narvarte,Maite Andrea Narvarte,Raúl González,Raúl González,E. Walter Helbling,E. Walter Helbling +9 more
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References
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Journal ArticleDOI
A Pliocene-Pleistocene stack of 57 globally distributed benthic δ18O records
TL;DR: In this paper, a 53-Myr stack (LR04) of benthic δ18O records from 57 globally distributed sites aligned by an automated graphic correlation algorithm is presented.
Journal ArticleDOI
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Minze Stuiver,Henry Polach +1 more
TL;DR: In this article, standards for reporting C-14 age determinations are discussed, and the statistical uncertainty (plus or minus one standard deviation) expresses counting errors, inaccuracies in voltage, pressure, temperature, dilution, and should include errors in C-13 ratios.
Climate and atmospheric history of the past 420,000 years from the Vostok ice core, Antarctica
J. R. Petit,Jean Jouzel,Dominique Raynaud,J. M. Barnola,I. Basile,Michael L. Bender,Jérôme Chappellaz,Michael Davis,Gilles Delaygue,Marc Delmotte,V. M. Kotlyakov,Michel Legrand,Vladimir Ya. Lipenkov,C. Lorius,L. Pepin,Catherine Ritz,Eric S. Saltzman,Michel Stievenard +17 more
TL;DR: The recent completion of drilling at Vostok station in East Antarctica has allowed the extension of the ice record of atmospheric composition and climate to the past four glacial-interglacial cycles.
Journal ArticleDOI
Climate and atmospheric history of the past 420,000 years from the Vostok ice core, Antarctica
J. R. Petit,Jean Jouzel,Dominique Raynaud,Nartsiss I. Barkov,I. Basile,Michael L. Bender,Jérôme Chappellaz,M. Davisk,G. Delaygue,Marc Delmotte,V. M. Kotlyakov,Michel Legrand,Vladimir Ya. Lipenkov,C. Lorius,Catherine Ritz,E. Saltzmank,Michel Stievenard +16 more
TL;DR: The recent completion of drilling at Vostok station in East Antarctica has allowed the extension of the ice record of atmospheric composition and climate to the past four glacial-interglacial cycles as discussed by the authors.
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