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Datasets of project "European Project for Ice Coring in Antarctica"

Mostrando recursos 1 - 20 de 562

  1. Measurements of fracture toughness applying a four-point-bending technique of ice core B34 from Kohnen Station, Dronning Maud Land, Antarctica

    Christmann, Julia; Müller, Ralf; Webber, Kyle G; Isaia, Daniel; Schader, Florian H; Kipfstuhl, Sepp; Freitag, Johannes; Humbert, Angelika
    The critical fracture toughness is a material parameter describing the resistance of a cracked body to further crack extension. It is an important parameter to simulate and predict the break-up behaviour of ice shelves from calving of single icebergs to the disintegration of entire ice shelves over a wide range of length scales. The fracture toughness values are calculated with equations that are derived from an elastic stress analysis. Additionally, an X-ray computer tomography (CT scanner) was used to identify the density as a function of depth. The critical fracture toughness of 91 Antarctic inland ice samples with densities between...

  2. The Antarctic ice core chronology (AICC2012)

    Bazin, Lucie; Landais, Amaelle; Lemieux-Dudon, Bénédicte; Toyé Mahamadou Kele, H; Veres, Daniel; Parrenin, Frédéric; Martinerie, P; Ritz, Catherine; Capron, Emilie; Lipenkov, Vladimir Y; Loutre, M-F; Raynaud, Dominique; Vinther, Bo M; Svensson, Anders M; Rasmussen, Sune Olander; Severi, Mirko; Blunier, Thomas; Leuenberger, Markus; Fischer, Hubertus; Masson-Delmotte, Valerie; Chappellaz, Jérôme A; Wolff, Eric W
    Abstract of Bazin et al. (2013): An accurate and coherent chronological framework is essential for the interpretation of climatic and environmental records obtained from deep polar ice cores. Until now, one common ice core age scale had been developed based on an inverse dating method (Datice), combining glaciological modelling with absolute and stratigraphic markers between 4 ice cores covering the last 50 ka (thousands of years before present) (Lemieux-Dudon et al., 2010). In this paper, together with the companion paper of Veres et al. (2013), we present an extension of this work back to 800 ka for the NGRIP, TALDICE,...

  3. delta Deuterium measured on ice core EDC on AICC2012 chronology

    Bazin, Lucie; Landais, Amaelle; Lemieux-Dudon, Bénédicte; Toyé Mahamadou Kele, H; Veres, Daniel; Parrenin, Frédéric; Martinerie, P; Ritz, Catherine; Capron, Emilie; Lipenkov, Vladimir Y; Loutre, M-F; Raynaud, Dominique; Vinther, Bo M; Svensson, Anders M; Rasmussen, Sune Olander; Severi, Mirko; Blunier, Thomas; Leuenberger, Markus; Fischer, Hubertus; Masson-Delmotte, Valerie; Chappellaz, Jérôme A; Wolff, Eric W

  4. delta 18O measured on ice core EDML on AICC2012 chronology

    Bazin, Lucie; Landais, Amaelle; Lemieux-Dudon, Bénédicte; Toyé Mahamadou Kele, H; Veres, Daniel; Parrenin, Frédéric; Martinerie, P; Ritz, Catherine; Capron, Emilie; Lipenkov, Vladimir Y; Loutre, M-F; Raynaud, Dominique; Vinther, Bo M; Svensson, Anders M; Rasmussen, Sune Olander; Severi, Mirko; Blunier, Thomas; Leuenberger, Markus; Fischer, Hubertus; Masson-Delmotte, Valerie; Chappellaz, Jérôme A; Wolff, Eric W

  5. Methane measured on ice core EDML on AICC2012 chronology

    Bazin, Lucie; Landais, Amaelle; Lemieux-Dudon, Bénédicte; Toyé Mahamadou Kele, H; Veres, Daniel; Parrenin, Frédéric; Martinerie, P; Ritz, Catherine; Capron, Emilie; Lipenkov, Vladimir Y; Loutre, M-F; Raynaud, Dominique; Vinther, Bo M; Svensson, Anders M; Rasmussen, Sune Olander; Severi, Mirko; Blunier, Thomas; Leuenberger, Markus; Fischer, Hubertus; Masson-Delmotte, Valerie; Chappellaz, Jérôme A; Wolff, Eric W

  6. Methane measured on ice core EDC on AICC2012 chronology

    Bazin, Lucie; Landais, Amaelle; Lemieux-Dudon, Bénédicte; Toyé Mahamadou Kele, H; Veres, Daniel; Parrenin, Frédéric; Martinerie, P; Ritz, Catherine; Capron, Emilie; Lipenkov, Vladimir Y; Loutre, M-F; Raynaud, Dominique; Vinther, Bo M; Svensson, Anders M; Rasmussen, Sune Olander; Severi, Mirko; Blunier, Thomas; Leuenberger, Markus; Fischer, Hubertus; Masson-Delmotte, Valerie; Chappellaz, Jérôme A; Wolff, Eric W

  7. AICC2012 chronology for ice core EDML

    Bazin, Lucie; Landais, Amaelle; Lemieux-Dudon, Bénédicte; Toyé Mahamadou Kele, H; Veres, Daniel; Parrenin, Frédéric; Martinerie, P; Ritz, Catherine; Capron, Emilie; Lipenkov, Vladimir Y; Loutre, M-F; Raynaud, Dominique; Vinther, Bo M; Svensson, Anders M; Rasmussen, Sune Olander; Severi, Mirko; Blunier, Thomas; Leuenberger, Markus; Fischer, Hubertus; Masson-Delmotte, Valerie; Chappellaz, Jérôme A; Wolff, Eric W

  8. AICC2012 chronology for ice core EDC

    Bazin, Lucie; Landais, Amaelle; Lemieux-Dudon, Bénédicte; Toyé Mahamadou Kele, H; Veres, Daniel; Parrenin, Frédéric; Martinerie, P; Ritz, Catherine; Capron, Emilie; Lipenkov, Vladimir Y; Loutre, M-F; Raynaud, Dominique; Vinther, Bo M; Svensson, Anders M; Rasmussen, Sune Olander; Severi, Mirko; Blunier, Thomas; Leuenberger, Markus; Fischer, Hubertus; Masson-Delmotte, Valerie; Chappellaz, Jérôme A; Wolff, Eric W

  9. A reconstruction of atmospheric carbon dioxide and its stable carbon isotopic composition from the penultimate glacial maximum to the glacial inception

    Schneider, Robert; Schmitt, Jochen; Koehler, Peter; Joos, Fortunat; Fischer, Hubertus
    The reconstruction of the stable carbon isotope evolution in atmospheric CO2 (d13Catm ), as archived in Antarctic ice cores, bears the potential to disentangle the contributions of the different carbon cycle fluxes causing past CO2 variations. Here we present a new record of d13Catm before, during and after the Marine Isotope Stage 5.5 (155 000 to 105 000 years BP). The record was derived with a well established sublimation method using ice from the EPICA Dome C (EDC) and the Talos Dome ice cores in East Antarctica. We find a 0.4 permil shift to heavier values between the mean d13Catm...

  10. A reconstruction of atmospheric carbon dioxide and its stable carbon isotopic composition from the penultimate glacial maximum to the glacial inception

    Schneider, Robert; Schmitt, Jochen; Koehler, Peter; Joos, Fortunat; Fischer, Hubertus
    The reconstruction of the stable carbon isotope evolution in atmospheric CO2 (d13Catm ), as archived in Antarctic ice cores, bears the potential to disentangle the contributions of the different carbon cycle fluxes causing past CO2 variations. Here we present a new record of d13Catm before, during and after the Marine Isotope Stage 5.5 (155 000 to 105 000 years BP). The record was derived with a well established sublimation method using ice from the EPICA Dome C (EDC) and the Talos Dome ice cores in East Antarctica. We find a 0.4 permil shift to heavier values between the mean d13Catm...

  11. Stable carbon isotope ratios of atmospheric CO2 of ice cores Dome C and Talos Dome

    Schneider, Robert; Schmitt, Jochen; Koehler, Peter; Joos, Fortunat; Fischer, Hubertus

  12. Stable carbon isotope ratios of atmospheric CO2 of ice cores Dome C and Talos Dome

    Schneider, Robert; Schmitt, Jochen; Koehler, Peter; Joos, Fortunat; Fischer, Hubertus

  13. Monte Carlo average of stable carbon isotope ratio of atmospheric CO2 from three Antarctic ice cores, 155-105 ka BP

    Schneider, Robert; Schmitt, Jochen; Koehler, Peter; Joos, Fortunat; Fischer, Hubertus

  14. Monte Carlo average of stable carbon isotope ratio of atmospheric CO2 from three Antarctic ice cores, 155-105 ka BP

    Schneider, Robert; Schmitt, Jochen; Koehler, Peter; Joos, Fortunat; Fischer, Hubertus

  15. Monte Carlo average of stable carbon isotope ratio of atmospheric CO2 from three Antarctic ice cores, 155-105 ka BP

    Schneider, Robert; Schmitt, Jochen; Koehler, Peter; Joos, Fortunat; Fischer, Hubertus

  16. Isotopic data of atmospheric methane from EDML and Vostok ice cores over a full glacial cycle

    Möller, Lars; Sowers, Todd A; Bock, Michael; Spahni, Renato; Behrens, Melanie; Schmitt, Jochen; Miller, Heinz; Fischer, Hubertus
    The response of natural CH4 sources to climate changes will be an important factor to consider as concentrations of this potent greenhouse gas continue to increase. Polar ice cores provide the means to assess this sensitivity in the past and have shown a close connection between CH4 levels and northern hemisphere temperature variability over the last glacial cycle. However, the contribution of the various CH4 sources and sinks to these changes is still a matter of debate. Contemporaneous stable CH4 isotope records in ice cores provide additional boundary conditions for assessing changes in the CH4 sources and sinks. Here we...

  17. Vostok carbon isotopic data of atmospheric methane

    Möller, Lars; Sowers, Todd A; Bock, Michael; Spahni, Renato; Behrens, Melanie; Schmitt, Jochen; Miller, Heinz; Fischer, Hubertus

  18. Tie-points for the manual methane synchronization of Vostok ice core data to EDC ice core gas age scales in between DO event 21 and the Termination 2

    Möller, Lars; Sowers, Todd A; Bock, Michael; Spahni, Renato; Behrens, Melanie; Schmitt, Jochen; Miller, Heinz; Fischer, Hubertus

  19. Tie-points for the manual methane synchronization of Byrd ice core data to EDML ice core gas age scales

    Möller, Lars; Sowers, Todd A; Bock, Michael; Spahni, Renato; Behrens, Melanie; Schmitt, Jochen; Miller, Heinz; Fischer, Hubertus

  20. Delta deuterium of atmospheric methane for the MIS5/4 transition from the EDML ice core

    Möller, Lars; Sowers, Todd A; Bock, Michael; Spahni, Renato; Behrens, Melanie; Schmitt, Jochen; Miller, Heinz; Fischer, Hubertus

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