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Author Hreinsdottir Sigrun, Sigmundsson Freysteinn, Roberts Matthew J, Bjornsson Halldor, Grapenthin Ronni, Arason Pordur, Arnadottir Thora, Holmjarn Josef, Geirsson Halldor, Bennett Richard A, Gudmundsson Magnus T, Oddsson Bjorn, Ofeigsson Benedikt G, Villemin Thierry, Jonsson Thorsteinn, Sturkell Erik, Hoskuldsson Armann, Larsen Gudrun, Thordarson Thor, Oladottir Bergrun Arna, doi  openurl
  Title Volcanic plume height correlated with magma-pressure change at Grimsvotn Volcano, Iceland Type Journal Article
  Year 2014 Publication Nature Geoscience Abbreviated Journal  
  Volume 7 Issue 3 Pages 214-218  
  Keywords  
  Abstract Magma flow during volcanic eruptions causes surface deformation that can be used to constrain the location, geometry and internal pressure evolution of the underlying magmatic source1. The height of the volcanic plumes during explosive eruptions also varies with magma flow rate, in a nonlinear way2, 3. In May 2011, an explosive eruption at Grímsvötn Volcano, Iceland, erupted about 0.27 km3 dense-rock equivalent of basaltic magma in an eruption plume that was about 20 km high. Here we use Global Positioning System (GPS) and tilt data, measured before and during the eruption at Grímsvötn Volcano, to show that the rate of pressure change in an underlying magma chamber correlates with the height of the volcanic plume over the course of the eruption. We interpret ground deformation of the volcano, measured by geodesy, to result from a pressure drop within a magma chamber at about 1.7 km depth. We estimate the rate of magma discharge and the associated evolution of the plume height by differentiating the co-eruptive pressure drop with time. The time from the initiation of the pressure drop to the onset of the eruption was about 60 min, with about 25% of the total pressure change preceding the eruption. Near-real-time geodetic observations can thus be useful for both timely eruption warnings and for constraining the evolution of volcanic plumes.  
  Programme 316  
  Campaign  
  Address  
  Corporate Author Thesis Bachelor's thesis  
  Publisher Nature Publishing Group Place of Publication Editor  
  Language Summary Language Original Title  
  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN 1752-0894 ISBN Medium  
  Area Expedition Conference  
  Notes Approved yes  
  Call Number Serial 4880  
Permanent link to this record
 
 
Author Bost Charles A, Cotté Cedric, Terray Pascal, Barbraud Christophe, Bon Cécile, Delord Karine, Gimenez Olivier, Handrich Yves, Naito Yasuhiko, Guinet Christophe, Weimerskirch Henri, doi  openurl
  Title Large-scale climatic anomalies affect marine predator foraging behaviour and demography. Type Journal Article
  Year 2015 Publication Nature communications Abbreviated Journal  
  Volume 6 Issue Pages 8220-8220  
  Keywords  
  Abstract Determining the links between the behavioural and population responses of wild species to environmental variations is critical for understanding the impact of climate variability on ecosystems. Using long-term data sets, we show how large-scale climatic anomalies in the Southern Hemisphere affect the foraging behaviour and population dynamics of a key marine predator, the king penguin. When large-scale subtropical dipole events occur simultaneously in both subtropical Southern Indian and Atlantic Oceans, they generate tropical anomalies that shift the foraging zone southward. Consequently the distances that penguins foraged from the colony and their feeding depths increased and the population size decreased. This represents an example of a robust and fast impact of large-scale climatic anomalies affecting a marine predator through changes in its at-sea behaviour and demography, despite lack of information on prey availability. Our results highlight a possible behavioural mechanism through which climate variability may affect population processes.
 
  Programme 109,394  
  Campaign  
  Address  
  Corporate Author Thesis Bachelor's thesis  
  Publisher Nature Publishing Group Place of Publication Editor  
  Language Summary Language Original Title  
  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN 2041-1723 ISBN Medium  
  Area Expedition Conference  
  Notes Approved yes  
  Call Number Serial 6184  
Permanent link to this record
 
 
Author Eichhorn Gotz, Groscolas Rene, Le Glaunec Gaele, Parisel Camille, Arnold Laurent, Medina Patrice, Handrich Yves, pdf  doi
openurl 
  Title Heterothermy in growing king penguins Type Journal Article
  Year 2011 Publication Nature communications Abbreviated Journal  
  Volume 2 Issue Pages 435-  
  Keywords  
  Abstract A drop in body temperature allows significant energy savings in endotherms, but facultative heterothermy is usually restricted to small animals. Here we report that king penguin
chicks (Aptenodytes patagonicus), which are able to fast for up to 5 months in winter, undergo marked seasonal heterothermy during this period of general food scarcity and slow-down of growth. They also experience short-term heterothermy below 20 °C in the lower abdomen during the intense (re)feeding period in spring, induced by cold meals and adverse weather.
The heterothermic response involves reductions in peripheral temperature, reductions in thermal core volume and temporal abandonment of high core temperature. Among climate variables, air temperature and wind speed show the strongest effect on body temperature,
but their effect size depends on physiological state. The observed heterothermy is remarkable for such a large bird (10 kg before fasting), which may account for its unrivalled fasting
capacity among birds.		  
  Programme 119;394  
  Campaign  
  Address  
  Corporate Author Thesis Bachelor's thesis  
  Publisher Nature Publishing Group, a division of Macmillan Publishers Limited. All Rights Reserved. Place of Publication Editor  
  Language Summary Language Original Title  
  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN 2041-1723 ISBN Medium  
  Area Expedition Conference  
  Notes Approved yes  
  Call Number Serial 3615  
Permanent link to this record
 
 
Author Picard G, Domine F, Krinner G, Arnaud L, Lefebvre E, doi  openurl
  Title Inhibition of the positive snow-albedo feedback by precipitation in interior Antarctica Type Journal
  Year 2012 Publication Nature Climate Change Abbreviated Journal  
  Volume Issue 11 Pages 795-798  
  Keywords limate change Cryospheric science  
  Abstract This study uses satellite data to study snow grain size–albedo relationships over the whole Antarctic Plateau. The findings suggest that increased precipitation resulting from climate change will effectively compensate for the decreased albedo that should have resulted from warming, thereby inhibiting the expected ice–albedo feedback.  
  Programme 1013  
  Campaign  
  Address  
  Corporate Author Thesis Bachelor's thesis  
  Publisher Nature Publishing Group Place of Publication Editor  
  Language Summary Language Original Title  
  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN 1758-6798 ISBN Medium  
  Area Expedition Conference  
  Notes Approved yes  
  Call Number Serial 456  
Permanent link to this record
 
 
Author Saraux Claire, Le Bohec Celine, Durant Joel M, Viblanc Vincent A, Gauthier-Clerc Michel, Beaune David, Park Young-Hyang, Yoccoz Nigel G, Stenseth Nils C, Le Maho Yvon, doi  openurl
  Title Reliability of flipper-banded penguins as indicators of climate change Type Journal Article
  Year 2011 Publication NATURE Abbreviated Journal  
  Volume 469 Issue 7329 Pages 203-206  
  Keywords  
  Abstract  
  Programme 137  
  Campaign  
  Address  
  Corporate Author Thesis Bachelor's thesis  
  Publisher Nature Publishing Group, a division of Macmillan Publishers Limited. All Rights Reserved. Place of Publication Editor  
  Language Summary Language Original Title  
  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN 0028-0836 ISBN Medium  
  Area Expedition Conference  
  Notes Approved yes  
  Call Number Serial 3300  
Permanent link to this record
 
 
Author Saether, B.-E.; Lande, R.; Engen, S.; Weimerskirch, H.; Lillegard, M.; Altwegg, R.; Becker, P.H.; Bregnballe, T.; Brommer, J.E.; McCleery, R.H.; Merila, J.; Nyholm, E.; Rendell, W.; Robertson, R.R.; Tryjanowski, P.; Visser, M.E. doi  openurl
  Title Generation time and temporal scaling of bird population dynamics Type Journal Article
  Year 2005 Publication AADE editors' journal Abbreviated Journal  
  Volume 436 Issue 7047 Pages 99-102  
  Keywords  
  Abstract Theoretical studies have shown that variation in density regulation strongly influences population dynamics1, yet our understanding of factors influencing the strength of density dependence in natural populations still is limited2. Consequently, few general hypotheses have been advanced to explain the large differences between species in the magnitude of population fluctuations3, 4, 5, 6. One reason for this is that the detection of density regulation in population time series is complicated by time lags induced by the life history of species7, 8 that make it difficult to separate the relative contributions of intrinsic and extrinsic factors to the population dynamics. Here we use population time series for 23 bird species to estimate parameters of a stochastic density-dependent age-structured model. We show that both the strength of total density dependence in the life history and the magnitude of environmental stochasticity, including transient fluctuations in age structure, increase with generation time. These results indicate that the relationships between demographic and life-history traits in birds9, 10 translate into distinct population dynamical patterns that are apparent only on a scale of generations.  
  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 0160-6999 ISBN Medium  
  Area Expedition Conference  
  Notes 10.1038/nature03666 Approved yes  
  Call Number IPEV @ Thierry.Lemaire @ Serial 5593  
Permanent link to this record
 
 
Author Andersen K. K., N. Azuma, J.-M. Barnola, M. Bigler, P. Biscaye, N. Caillon, J. Chappellaz, H. B. Clausen, D. Dahl-Jensen, H. Fischer, J. Flückiger, D. Fritzsche, Y. Fujii, K. Goto-Azuma, K. Grønvold, N. S. Gundestrup, M. Hansson, C. Huber, C. S. Hvidberg, S. J. Johnsen, U. Jonsell, J. Jouzel, S. Kipfstuhl, A. Landais, M. Leuenberger, R. Lorrain, V. Masson-Delmotte, H. Miller, H. Motoyama, H. Narita, T. Popp, S. O. Rasmussen, D. Raynaud, R. Rothlisberger, U. Ruth, D. Samyn, J. Schwander, H. Shoji, M.-L. Siggard-Andersen, J. P. Steffensen, T. Stocker, A. E. Sveinbjörnsdóttir, A. Svensson, M. Takata, J.-L. Tison, Th. Thorsteinsson, O. Watanabe, F. Wilhelms & J. W. C. White doi  openurl
  Title High resolution climate record of the northern hemisphere reaching into last interglacial period. Type Journal Article
  Year 2005 Publication Nature Abbreviated Journal Nature  
  Volume 431 Issue Pages 147-151  
  Keywords  
  Abstract Two deep ice cores from central Greenland, drilled in the 1990s, have played a key role in climate reconstructions of the Northern Hemisphere, but the oldest sections of the cores were disturbed in chronology owing to ice folding near the bedrock. Here we present an undisturbed climate record from a North Greenland ice core, which extends back to 123,000 years before the present, within the last interglacial period. The oxygen isotopes in the ice imply that climate was stable during the last interglacial period, with temperatures 5 °C warmer than today. We find unexpectedly large temperature differences between our new record from northern Greenland and the undisturbed sections of the cores from central Greenland, suggesting that the extent of ice in the Northern Hemisphere modulated the latitudinal temperature gradients in Greenland. This record shows a slow decline in temperatures that marked the initiation of the last glacial period. Our record reveals a hitherto unrecognized warm period initiated by an abrupt climate warming about 115,000 years ago, before glacial conditions were fully developed. This event does not appear to have an immediate Antarctic counterpart, suggesting that the climate see-saw between the hemispheres (which dominated the last glacial period) was not operating at this time.  
  Programme 458  
  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 0028-0836 ISBN Medium  
  Area Expedition Conference  
  Notes Approved yes  
  Call Number Serial 3102  
Permanent link to this record
 
 
Author EPICA Community Members doi  openurl
  Title Eight glacial cycles from an Antarctic ice core Type Journal Article
  Year 2004 Publication Nature Abbreviated Journal Nature  
  Volume 429 Issue 6992 Pages 623-628  
  Keywords  
  Abstract The Antarctic Vostok ice core provided compelling evidence of the nature of climate, and of climate feedbacks, over the past 420,000 years. Marine records suggest that the amplitude of climate variability was smaller before that time, but such records are often poorly resolved. Moreover, it is not possible to infer the abundance of greenhouse gases in the atmosphere from marine records. Here we report the recovery of a deep ice core from Dome C, Antarctica, that provides a climate record for the past 740,000 years. For the four most recent glacial cycles, the data agree well with the record from Vostok. The earlier period, between 740,000 and 430,000 years ago, was characterized by less pronounced warmth in interglacial periods in Antarctica, but a higher proportion of each cycle was spent in the warm mode. The transition from glacial to interglacial conditions about 430,000 years ago (Termination V) resembles the transition into the present interglacial period in terms of the magnitude of change in temperatures and greenhouse gases, but there are significant differences in the patterns of change. The interglacial stage following Termination V was exceptionally long—28,000 years compared to, for example, the 12,000 years recorded so far in the present interglacial period. Given the similarities between this earlier warm period and today, our results may imply that without human intervention, a climate similar to the present one would extend well into the future.


EPICA community members* (participants are listed alphabetically)
Laurent Augustin1, Carlo Barbante2, Piers R. F. Barnes3, Jean Marc Barnola1, Matthias Bigler4, Emiliano Castellano5, Olivier Cattani6,
Jerome Chappellaz1, Dorthe Dahl-Jensen7, Barbara Delmonte1,8, Gabrielle Dreyfus6, Gael Durand1, Sonia Falourd6, Hubertus Fischer9,
Jacqueline Fluckiger4, Margareta E. Hansson10, Philippe Huybrechts9, Gerard Jugie11, Sigfus J. Johnsen7, Jean Jouzel6, Patrik Kaufmann4,
Josef Kipfstuhl9, Fabrice Lambert4, Vladimir Y. Lipenkov12, Genevieve C. Littot3, Antonio Longinelli13, Reginald Lorrain14, Valter Maggi8,
Valerie Masson-Delmotte6, Heinz Miller9, Robert Mulvaney3, Johannes Oerlemans15, Hans Oerter9, Giuseppe Orombelli8, Frederic Parrenin1,6,
David A. Peel3, Jean-Robert Petit1, Dominique Raynaud1, Catherine Ritz1, Urs Ruth9, Jakob Schwander4, Urs Siegenthaler4, Roland Souchez14,
Bernhard Stauffer4, Jorgen Peder Steffensen7, Barbara Stenni16, Thomas F. Stocker4, Ignazio E. Tabacco17, Roberto Udisti5,
Roderik S. W. van de Wal15, Michiel van den Broeke15, Jerome Weiss1, Frank Wilhelms9, Jan-Gunnar Winther18, Eric W. Wolff3 & Mario Zucchelli19*

1, Laboratoire de Glaciologie et Geophysique de l’Environnement (CNRS), BP 96, 38402 St Martin d’Heres Cedex, France; 2, Environmental Sciences Department,
University of Venice, Calle Larga S. Marta, 2137, I-30123 Venice, Italy; 3, British Antarctic Survey, High Cross, Madingley Road, Cambridge CB3 0ET, UK; 4, Climate
and Environmental Physics, Physics Institute, University of Bern, Sidlerstrasse 5, CH-3012 Bern, Switzerland; 5, Department of Chemistry—Analytical Chemistry
Section, Scientific Pole—University of Florence, Via della Lastruccia 3, 50019 Sesto Fiorentino (Florence), Italy; 6, Institut Pierre Simon Laplace/Laboratoire des Sciences
du Climat et de l’Environnement, UMR CEA-CNRS 1572, CE Saclay, Orme des Merisiers, 91191 Gif-Sur-Yvette, France; 7, Niels Bohr Institute for Astronomy, Physics
and Geophysics, University of Copenhagen, Juliane Maries Vej 30, DK-2100 Copenhagen, Denmark; 8, University of Milano-Bicocca, Dipartimento di Scienze Ambiente
e Territorio, Piazza della Scienza 1, I-20126 Milan, Italy; 9, Alfred-Wegener-Institute for Polar- und Marine Research (AWI), Postfach 120161, D-27515 Bremerhaven,
Germany; 10, Department of Physical Geography and Quaternary Geology, Stockholm University, S-106 91 Stockholm, Sweden; 11, Institut Polaire Francais–Paul Emile Victor (IPEV), BP 75, 29280 Plouzane, France; 12, Arctic and Antarctic Research Institute, 38 Beringa Street, 199397 St Petersburg, Russia; 13, Department of Earth Sciences, University of Parma, Parco Area delle Scienze 157/A, I-43100 Parma, Italy; 14, Departement des Sciences de la Terre et de l’Environnement, Faculte des Sciences, CP 160/03, Universite Libre de Bruxelles, 50 avenue FD Roosevelt, B1050 Brussels, Belgium; 15, Institute for Marine and Atmospheric Research Utrecht
(IMAU), Princetonplein 5, 3584 CC Utrecht, The Netherlands; 16, Department of Geological, Environmental and Marine Sciences, University of Trieste, Via E. Weiss 2,
I-34127 Trieste, Italy; 17, Earth Science Department, University of Milan, Via Cicognara 7, 20129 Milano, Italy; 18, Norwegian Polar Institute, N-9296 Tromsø, Norway;
19, ENEA, CRE Casaccia, PO Box 2400, Via Anguillarese 301, 00060 S. Maria di Galleria (RM), Italy.
*Deceased.		  
  Programme 960  
  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 0028-0836 ISBN Medium  
  Area Expedition Conference  
  Notes 10.1038/nature02599 Approved yes  
  Call Number IPEV @ Thierry.Lemaire @ Serial 5553  
Permanent link to this record
 
 
Author Ancel A., Visser H., Handrich Y., Masman D. & Le Maho Y. doi  openurl
  Title Energy saving in hudding penguins. Type Journal Article
  Year 1997 Publication Nature Abbreviated Journal Nature  
  Volume 385 Issue Pages 304-305  
  Keywords  
  Abstract  
  Programme 137  
  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 0028-0836 ISBN Medium  
  Area Expedition Conference  
  Notes Approved yes  
  Call Number Serial 907  
Permanent link to this record
 
 
Author White J.W.C. doi  openurl
  Title Don't touch that dial. Type Journal Article
  Year 1993 Publication Nature Abbreviated Journal Nature  
  Volume 364 Issue Pages 186  
  Keywords  
  Abstract  
  Programme 322  
  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 0028-0836 ISBN Medium  
  Area Expedition Conference  
  Notes Approved yes  
  Call Number Serial 1853  
Permanent link to this record
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