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Author doi  openurl
  Title Phase relationships between orbital forcing and the composition of air trapped in Antarctic ice cores Type Journal Article
  Year 2015 Publication Climate of the Past Discussions Abbreviated Journal  
  Volume 11 Issue 2 Pages 1437-1477  
  Keywords  
  Abstract  
  Programme 902  
  Campaign  
  Address  
  Corporate Author Thesis  
  Publisher Copernicus GmbH Place of Publication Editor  
  Language Summary Language Original Title  
  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN (down) 1814-9359 ISBN Medium  
  Area Expedition Conference  
  Notes Approved yes  
  Call Number Serial 6199  
Permanent link to this record
 
 
Author Capron E, Landais A, Chappellaz J, Schilt A, Buiron D, Dahl-Jensen D, Johnsen S J, Jouzel J, Lemieux-Dudon B, Loulergue L, Leuenberger M, Masson-Delmotte V, Meyer H, Oerter H, Stenni B, doi  openurl
  Title Millennial and sub-millennial scale climatic variations recorded in polar ice cores over the last glacial period Type Journal Article
  Year 2010 Publication Clim. Past Abbreviated Journal  
  Volume 6 Issue 3 Pages 345 -365  
  Keywords  
  Abstract Since its discovery in Greenland ice cores, the millennial scale climatic variability of the last glacial period has been increasingly documented at all latitudes with studies focusing mainly on Marine Isotopic Stage 3 (MIS 3; 28-60 thousand of years before present, hereafter ka) and characterized by short Dansgaard-Oeschger (DO) events. Recent and new results obtained on the EPICA and NorthGRIP ice cores now precisely describe the rapid variations of Antarctic and Greenland temperature during MIS 5 (73.5-123 ka), a time period corresponding to relatively high sea level. The results display a succession of abrupt events associated with long Greenland InterStadial phases (GIS) enabling us to highlight a sub-millennial scale climatic variability depicted by (i) short-lived and abrupt warming events preceding some GIS (precursor-type events) and (ii) abrupt warming events at the end of some GIS (rebound-type events). The occurrence of these sub-millennial scale events is suggested to be driven by the insolation at high northern latitudes together with the internal forcing of ice sheets. Thanks to a recent NorthGRIP-EPICA Dronning Maud Land (EDML) common timescale over MIS 5, the bipolar sequence of climatic events can be established at millennial to sub-millennial timescale. This shows that for extraordinary long stadial durations the accompanying Antarctic warming amplitude cannot be described by a simple linear relationship between the two as expected from the bipolar seesaw concept. We also show that when ice sheets are extensive, Antarctica does not necessarily warm during the whole GS as the thermal bipolar seesaw model would predict, questioning the Greenland ice core temperature records as a proxy for AMOC changes throughout the glacial period.  
  Programme 458  
  Campaign  
  Address  
  Corporate Author Thesis  
  Publisher Copernicus Publications Place of Publication Editor  
  Language Summary Language Original Title  
  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN (down) 1814-9332 ISBN Medium  
  Area Expedition Conference  
  Notes Approved yes  
  Call Number Serial 2702  
Permanent link to this record
 
 
Author Landais A, Dreyfus G, Capron E, Pol K, Loutre M F, Raynaud D, Lipenkov V Y, Arnaud L, Masson-Delmotte V, Paillard D, Jouzel J, Leuenberger M, doi  openurl
  Title Towards orbital dating of the EPICA Dome C ice core using δO2/N2 Type Journal Article
  Year 2012 Publication Clim. Past Abbreviated Journal  
  Volume 8 Issue 1 Pages 191-203  
  Keywords  
  Abstract  
  Programme 902  
  Campaign  
  Address  
  Corporate Author Thesis  
  Publisher Copernicus Publications Place of Publication Editor  
  Language Summary Language Original Title  
  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN (down) 1814-9332 ISBN Medium  
  Area Expedition Conference  
  Notes Approved yes  
  Call Number Serial 4152  
Permanent link to this record
 
 
Author Masson-Delmotte, V.; Dreyfus, G.; Braconnot, P.; Johnsen, S.; Jouzel, J.; Kageyama, M.; Landais, A.; Loutre, M.-F.; Nouet, J.; Parrenin, F.; Raynaud, D.; Stenni, B.; Tuenter, E. url  openurl
  Title Past temperature reconstructions from deep ice cores: relevance for future climate change Type Journal Article
  Year 2006 Publication Climate of the past Abbreviated Journal  
  Volume 2 Issue 2 Pages 145-165  
  Keywords  
  Abstract  
  Programme 458  
  Campaign  
  Address  
  Corporate Author Thesis  
  Publisher Copernicus Publications Place of Publication Editor  
  Language Summary Language Original Title  
  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN (down) 1814-9324 ISBN Medium  
  Area Expedition Conference  
  Notes Approved yes  
  Call Number IPEV @ Thierry.Lemaire @ Serial 5530  
Permanent link to this record
 
 
Author doi  openurl
  Title Type Journal Article
  Year 2013 Publication Clim. Past Abbreviated Journal Clim. Past  
  Volume 9 Issue Pages 1715-1731  
  Keywords  
  Abstract  
  Programme 902  
  Campaign  
  Address  
  Corporate Author Thesis  
  Publisher Place of Publication Editor  
  Language Summary Language Original Title  
  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN (down) 1814-9324 ISBN Medium  
  Area Expedition Conference  
  Notes Approved yes  
  Call Number Serial 4534  
Permanent link to this record
 
 
Author Fischer H, Severinghaus J, Brook E, Wolff E, Albert M, Alemany O, Arthern R, Bentley C, Blankenship D, Chappellaz J, Creyts T, Dahl-Jensen D, Dinn M, Frezzotti M, Fujita S, Gallee H, Hindmarsh R, Hudspeth D, Jugie G, Kawamura K, Lipenkov V, Miller H, Mulvaney R, Parrenin F, Pattyn F, Ritz C, Schwander J, Steinhage D, van Ommen T, Wilhelms F, doi  openurl
  Title Where to find 1.5 million yr old ice for the IPICS “Oldest-Ice” ice core Type Journal Article
  Year 2013 Publication Climate of the Past Abbreviated Journal 1814-9324  
  Volume 9 Issue 6 Pages 2489-2505  
  Keywords  
  Abstract The recovery of a 1.5 million yr long ice core from Antarctica represents a keystone of our understanding of Quaternary climate, the progression of glaciation over this time period and the role of greenhouse gas cycles in this progression. Here we tackle the question of where such ice may still be found in the Antarctic ice sheet. We can show that such old ice is most likely to exist in the plateau area of the East Antarctic ice sheet (EAIS) without stratigraphic disturbance and should be able to be recovered after careful pre-site selection studies. Based on a simple ice and heat flow model and glaciological observations, we conclude that positions in the vicinity of major domes and saddle position on the East Antarctic Plateau will most likely have such old ice in store and represent the best study areas for dedicated reconnaissance studies in the near future. In contrast to previous ice core drill site selections, however, we strongly suggest significantly reduced ice thickness to avoid bottom melting. For example for the geothermal heat flux and accumulation conditions at Dome C, an ice thickness lower than but close to about 2500 m would be required to find 1.5 Myr old ice (i.e., more than 700 m less than at the current EPICA Dome C drill site). Within this constraint, the resolution of an Oldest-Ice record and the distance of such old ice to the bedrock should be maximized to avoid ice flow disturbances for example, by finding locations with minimum geothermal heat flux. As the geothermal heat flux is largely unknown for the EAIS, this parameter has to be carefully determined beforehand. In addition, detailed bedrock topography and ice flow history has to be reconstructed for candidates of an Oldest-Ice ice coring site. Finally, we argue strongly for rapid access drilling before any full, deep ice coring activity commences to bring datable samples to the surface and to allow an age check of the oldest ice.  
  Programme 902  
  Campaign  
  Address  
  Corporate Author Thesis  
  Publisher Copernicus GmbH Place of Publication Editor  
  Language Summary Language Original Title  
  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN (down) 1814-9324 ISBN Medium  
  Area Expedition Conference  
  Notes Approved yes  
  Call Number Serial 5727  
Permanent link to this record
 
 
Author Lucie Bazin, Amaelle Landais, Emilie Capron, Valérie Masson-Delmotte, Catherine Ritz, Ghislain Picard, Jean Jouzel, Marie Dumont, Markus Leuenberger, and Frédéric Prié doi  openurl
  Title Phase relationships between orbital forcing and the composition of air trapped in Antarctic ice cores Type Journal Article
  Year 2016 Publication Climate of the past Abbreviated Journal  
  Volume 12 Issue 3 Pages 729-748  
  Keywords  
  Abstract Abstract. Orbital tuning is central for ice core chronologies beyond annual layer counting, available back to 60 ka (i.e. thousands of years before 1950) for Greenland ice cores. While several complementary orbital tuning tools have recently been developed using &#948;18Oatm, &#948;O2&#8260;N2 and air content with different orbital targets, quantifying their uncertainties remains a challenge. Indeed, the exact processes linking variations of these parameters, measured in the air trapped in ice, to their orbital targets are not yet fully understood. Here, we provide new series of &#948;O2&#8725;N2 and &#948;18Oatm data encompassing Marine Isotopic Stage (MIS) 5 (between 100 and 160 ka) and the oldest part (340–800 ka) of the East Antarctic EPICA Dome C (EDC) ice core. For the first time, the measurements over MIS 5 allow an inter-comparison of &#948;O2&#8725;N2 and &#948;18Oatm records from three East Antarctic ice core sites (EDC, Vostok and Dome F). This comparison highlights some site-specific &#948;O2&#8725;N2 variations. Such an observation, the evidence of a 100 ka periodicity in the &#948;O2&#8725;N2 signal and the difficulty to identify extrema and mid-slopes in &#948;O2&#8725;N2 increase the uncertainty associated with the use of &#948;O2&#8725;N2 as an orbital tuning tool, now calculated to be 3–4 ka. When combining records of &#948;18Oatm and &#948;O2&#8725;N2 from Vostok and EDC, we find a loss of orbital signature for these two parameters during periods of minimum eccentricity (&#8764; 400 ka,&#8201;&#8764; 720–800 ka). Our data set reveals a time-varying offset between &#948;O2&#8725;N2 and &#948;18Oatm records over the last 800 ka that we interpret as variations in the lagged response of &#948;18Oatm to precession. The largest offsets are identified during Terminations II, MIS 8 and MIS 16, corresponding to periods of destabilization of the Northern polar ice sheets. We therefore suggest that the occurrence of Heinrich–like events influences the response of &#948;18Oatm to precession.  
  Programme 902  
  Campaign  
  Address  
  Corporate Author Thesis  
  Publisher Place of Publication Editor  
  Language Summary Language Original Title  
  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN (down) 1814-9324 ISBN Medium  
  Area Expedition Conference  
  Notes Approved yes  
  Call Number Serial 6525  
Permanent link to this record
 
 
Author doi  isbn
openurl 
  Title Type Journal
  Year 2018 Publication Climate of the Past Abbreviated Journal  
  Volume 14 Issue 6 Pages 923-946  
  Keywords  
  Abstract  
  Programme 411  
  Campaign  
  Address  
  Corporate Author Thesis  
  Publisher Place of Publication Editor  
  Language Summary Language Original Title  
  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN (down) 1814-9324 ISBN 1814-9324 Medium  
  Area Expedition Conference  
  Notes Approved yes  
  Call Number Serial 7363  
Permanent link to this record
 
 
Author E. Gautier, J. Savarino, J. Erbland, A. Lanciki, P. Possenti doi  openurl
  Title Variability of sulfate signal in ice core records based on five replicate cores Type Journal
  Year 2016 Publication Climate of the Past Abbreviated Journal  
  Volume 12 Issue 1 Pages 103-113  
  Keywords  
  Abstract Abstract. Current Volcanic Reconstructions Based On Ice Core Analysis Have Significantly Improved Over The Past Few Decades By Incorporating Multiple-core Analyses With A High Temporal Resolution From Different Parts Of The Polar Regions Into A Composite Common Volcanic Eruption Record. Regional Patterns Of Volcanic Deposition Are Based On Composite Records, Built From Cores Taken At Both Poles. However, In Many Cases Only A Single Record At A Given Site Is Used For These Reconstructions. This Assumes That Transport And Regional Meteorological Patterns Are The Only Source Of The Dispersion Of The Volcanic Products. Here We Evaluate The Local-scale Variability Of A Sulfate Profile In A Low-accumulation Site (Dome C, Antarctica), In Order To Assess The Representativeness Of One Core For Such A Reconstruction. We Evaluate The Variability With Depth, Statistical Occurrence, And Sulfate Flux Deposition Variability Of Volcanic Eruptions Detected In Five Ice Cores, Drilled 1 M Apart From Each Other. Local-scale Variability, Essentially Attributed To Snow Drift And Surface Roughness At Dome C, Can Lead To A Non-exhaustive Record Of Volcanic Events When A Single Core Is Used As The Site Reference, With A Bulk Probability Of 30 % Of Missing Volcanic Events And Close To 65 % Uncertainty On One Volcanic Flux Measurement (Based On The Standard Deviation Obtained From A Five-core Comparison). Averaging N Records Reduces The Uncertainty Of The Deposited Flux Mean Significantly (By A Factor 1? ? N); In The Case Of Five Cores, The Uncertainty Of The Mean Flux Can Therefore Be Reduced To 29 %.  
  Programme 1011  
  Campaign  
  Address  
  Corporate Author Thesis  
  Publisher Place of Publication Editor  
  Language Summary Language Original Title  
  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN (down) 1814-9324 ISBN Medium  
  Area Expedition Conference  
  Notes Approved yes  
  Call Number Serial 8147  
Permanent link to this record
 
 
Author Cooper J. & Weimerskirch H. openurl 
  Title Exchange of the wandering albatross Diomedea exulans between the Prince Edward and Crozet Islands: implications for conservation. Type Journal Article
  Year 2003 Publication African journal of marine science Abbreviated Journal Afr. J. Mar. Sci.  
  Volume 25 Issue Pages 519-523  
  Keywords  
  Abstract  
  Programme 109  
  Campaign  
  Address  
  Corporate Author Thesis  
  Publisher Place of Publication Editor  
  Language Summary Language Original Title  
  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN (down) 1814-232X ISBN Medium  
  Area Expedition Conference  
  Notes Approved yes  
  Call Number Serial 2449  
Permanent link to this record
Select All    Deselect All [51–60] << 61 62 63 64 65 66 67 68 69 70 >> [71–80]
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