Phase relationships between millennial-scale events 64,000–24,000 years ago
TL;DR: In this paper, a core recovered on the Iberian margin off southern Portugal can be correlated with Greenland ice cores using oxygen isotope variability in planktonic foraminifera which closely matches the ice core records of temperature over Greenland.
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Abstract: A core recovered on the Iberian margin off southern Portugal can be correlated with Greenland ice cores using oxygen isotope variability in planktonic foraminifera which closely matches the ice core records of temperature over Greenland. Our age model identifies the base of every interstadial between 64,000 and 24,000 years ago and uses the Greenland Ice Core Project (GRIP) timescale. The oxygen isotope signal in benthic foraminifera (on this GRIP-based timescale) is quite different from the planktonic record and resembles the temperature record over Antarctica when this is synchronized with Greenland using the record of methane in the atmospheric air in the polar ice cores. We interpret the benthic record as indicating significant fluctuations in ice volume during millennial events, and we suggest that Antarctic temperature changed as a function of ice volume.
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Citations
Out of tune: the dangers of aligning proxy archives
TL;DR: Tuning is a widespread technique to combine, date and interpret multiple fossil proxy archives through aligning supposedly synchronous events between the archives as mentioned in this paper, and it has been reviewed by discussing a number of literature examples, ranging from peat and tephra layers to orbital tuning and δ18O series.
210
The response of NW Iberian vegetation to North Atlantic climate oscillations during the last 65 kyr
TL;DR: In this article, a centennial to millennial scale record of conditions offshore and of the vegetation of north-west Iberia for the period 10-65-ka was provided by deep ocean core MD95-2039.
202
Dominant Northern Hemisphere climate control over millennial-scale glacial sea-level variability
TL;DR: In this article, a new global sea-level reconstruction spanning the last glacial period was provided based on a radiocarbon and paleomagnetically dated sediment record from the northern Red Sea and the exceptional sensitivity of the regional changes in the oxygen isotope composition of sea water to the sea leveldependent water exchange with the Indian Ocean.
201
The Duration of Forest Stages in Southern Europe and Interglacial Climate Variability
TL;DR: Foraminiferal oxygen isotope and pollen analyses from a deep-sea sequence off southwest Portugal show that the duration of temperate stages on land over the past 350,000 years varied considerably, which complicates the prediction of the natural duration of interglacials.
191
High-resolution stratigraphy of the Mediterranean outflow contourite system in the Gulf of Cadiz during the late Pleistocene: The impact of Heinrich events
Estefanía Llave,Joachim Schönfeld,Francisco Javier Hernandéz-Molina,Thierry Mulder,Luis Somoza,V. Diaz del Rio,I. Sánchez-Almazo +6 more
TL;DR: In this paper, a detailed, high-resolution stratigraphic analysis of the Mediterranean Outflow contourite system at the continental slope of the Gulf of Cadiz has been carried out through the correlation between a dense network of seismic reflection profiles (sparker, airgun, 3.75 kHz and parametric echosounder), Calypso giant piston and standard gravity cores.
191
References
Evidence for general instability of past climate from a 250-kyr ice-core record
Willi Dansgaard,Sigfus J Johnsen,Sigfus J Johnsen,Henrik Clausen,Dorthe Dahl-Jensen,Niels S. Gundestrup,Claus U. Hammer,Christine S. Hvidberg,Jørgen Peder Steffensen,Arny E. Sveinbjörnsdottir,Jean Jouzel,Gerard C. Bond +11 more
TL;DR: In this paper, the authors present a detailed stable isotope record for the full length of the Greenland Ice-core Project Summit ice core, extending over the past 250 kyr according to a calculated timescale, and find that climate instability was not confined to the last glaciation, but appears also have been marked during the last interglacial (as explored more fully in a companion paper), and during the previous Saale-Holstein glacial cycle.
4.8K
Oxygen isotope and palaeomagnetic stratigraphy of Equatorial Pacific core V28-238: Oxygen isotope temperatures and ice volumes on a 105 year and 106 year scale☆
TL;DR: The core Vema 28-238 as discussed by the authors preserves an excellent oxygen isotope and magnetic stratigraphy and is shown to contain undisturbed sediments deposited continuously through the past 870,000 yr.
2.6K
Irregular glacial interstadials recorded in a new Greenland ice core
Sigfus J Johnsen,Sigfus J Johnsen,Henrik Clausen,Willi Dansgaard,K. Fuhrer,Niels S. Gundestrup,Claus U. Hammer,Peter Iversen,Jean Jouzel,Bernhard Stauffer,Jørgen Peder Steffensen +10 more
TL;DR: In this paper, the authors present results from a new deep ice core drilled at the summit of the Greenland ice sheet, where the depositional environ-ment and the flow pattern of the ice are close to ideal for core recovery and analysis.
1.5K
Major features and forcing of high-latitude northern hemisphere atmospheric circulation using a 110,000-year-long glaciochemical series
Paul Andrew Mayewski,L. D. Meeker,Mark S. Twickler,Sallie I. Whitlow,Qinzhao Yang,W. Berry Lyons,Michael L. Prentice +6 more
TL;DR: The Greenland Ice Sheet Project 2 glaciochemical series (sodium, potassium, ammonium, calcium, magnesium, sulfate, nitrate, and chloride) provides a unique view of the chemistry of the atmosphere and the history of atmospheric circulation over both the high latitudes and mid-low latitudes of the northern hemisphere as discussed by the authors.
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