Climate of the Past
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2007
10.5194/cp-3-367-2007
http://www.clim-past.net/3/367/2007/
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http://www.clim-past.net/3/367/2007/cp-3-367-2007.pdf
367
374
2007-07-02
Synchronisation of the EDML and EDC ice cores for the last 52 kyr by volcanic signature matching
M. Severi
mirko.severi@unifi.it
S. Becagli
E. Castellano
A. Morganti
R. Traversi
R. Udisti
U. Ruth
H. Fischer
P. Huybrechts
E. Wolff
F. Parrenin
P. Kaufmann
F. Lambert
J. P. Steffensen
Department of Chemistry, University of Florence, Florence, Italy
Alfred-Wegener-Institute for Polar and Marine Research, Bremerhaven, Germany
British Antarctic Survey, Cambridge, UK
Laboratoire de Glaciologie et Géophysique de l'Environnement, CNRS and Joseph Fourier University, Grenoble, France
Climate and Environmental Physics, Physics Institute, University of Bern, Bern, Switzerland
Niels Bohr Institute, University of Copenhagen, Copenhagen, Denmark
Departement Geografie, Vrije Universiteit Brussel, Brussels, Belgium
A common time scale for the EPICA ice cores from Dome C (EDC) and Dronning
Maud Land (EDML) has been established. Since the EDML core was not drilled
on a dome, the development of the EDML1 time scale for the EPICA ice core drilled
in Dronning Maud Land was based on the creation of a detailed stratigraphic
link between EDML and EDC, which was dated by a simpler 1D ice-flow model.
The synchronisation between the two EPICA ice cores was done through the
identification of several common volcanic signatures. This paper describes
the rigorous method, using the signature of volcanic sulfate, which was
employed for the last 52 kyr of the record. We estimated the discrepancies
between the modelled EDC and EDML glaciological age scales during the
studied period, by evaluating the ratio <i>R</i> of the apparent duration of
temporal intervals between pairs of isochrones. On average <i>R</i> ranges between
0.8 and 1.2 corresponding to an uncertainty of up to 20% in the estimate
of the time duration in at least one of the two ice cores. Significant
deviations of <i>R</i> up to 1.4–1.5 are observed between 18 and 28 kyr before
present (BP), where present is defined as 1950. At this stage our approach
does not allow us unequivocally to find out which of the models is affected
by errors, but assuming that the thinning function at both sites and
accumulation history at Dome C (which was drilled on a dome) are correct,
this anomaly can be ascribed to a complex spatial accumulation variability
(which may be different in the past compared to the present day) upstream of the EDML
core.
Barnes, P. R. F., Wolff, E., Mader, H. M., Udisti, R., Castellano, E., and Röthlisberger, R.: Evolution of chemical peak shapes in the Dome C, Antarctica, ice core, J. Geophys. Res., 108(D3), doi:10.1029/2002JD002538, 2003.
Barnes, P. R. F., Wolff, W. E., and Mulvaney, R.: A 44 kyr paleoroughness record of the Antarctic surface, J. Geophys. Res., 111, D03102, doi:03110.01029/02005JD006349, 2006.
Castellano, E., Becagli, S., Hansson, M., Hutterli, M., Petit, J. R., Rampino, M. R., Severi, M., Steffensen, J. P., Traversi, R., and Udisti, R.: Holocene volcanic history as recorded in the sulfate stratigraphy of the European Project for Ice Coring in Antarctica Dome C (EDC96) ice core, J. Geophys. Res., 110, D06114, doi:10.1029/2004JD005259, 2005.
Clausen, H. B., Hammer, C. U., Hvidberg, C. S., Dahl-Jensen, D., Steffensen, J. P., Kipfstuhl, J., and Legrand, M.: A comparison of the volcanic records over the past 4000 years from the Greenland Ice Core Project and Dye 3 Greenland Ice Cores, J. Geophys. Res., 102, 26 707–26 723, 1997.
Cole-Dai, J. and Mosley-Thompson, E.: The Pinatubo eruption in South Polar snow and its potential value to ice core paleovolcanic records, Ann. Glaciol., 29, 99–105, 1999.
Cole-Dai, J., Mosley-Thompson, E., and Thompson L. G.: Annually resolved southern hemisphere volcanic history from two Antarctic ice cores, J. Geophys. Res., 102(D14), 16 761–16 771, 1997.
EPICA-community-members: One-to-one coupling of glacial climate variability in Greenland and Antarctica, Nature, 444, 195–198, 2006.
EPICA-community-members: Eight glacial cycles from an Antarctic ice core, Nature, 429, 623–628, doi:10.1038/nature02599, 2004.
Gao, C., Robock, A., Self, S., Witter, J. B., Steffenson, J. P., Clausen, H. B., Siggaard-Andersen, M.-L., Johnsen, S., Mayewski, P. A., and Ammann, C.: The 1452 or 1453 A.D. Kuwae eruption signal derived from multiple ice core records: Greatest volcanic sulfate event of the past 700 years, J. Geophys. Res., 111, D12107, doi:10.1029/2005JD006710, 2006.
Huybrechts, P.: Sea-level changes at the LGM from ice-dynamic reconstructions of the Greenland and Antarctic ice sheets during the glacial cycles, Quat. Sci. Rev., 21, 203–231, 2002.
Huybrechts, P., Rybak, O., Pattyn, F., Ruth, U., and Steinhage, D.: Ice thinning, upstream advection, and non-climatic biases for the upper 89% of the EDML ice core from a nested model of the Antarctic ice sheet, Clim. Past Discuss, 3, 693–727, 2007.
Jouzel, J. and Merlivat L.: Deuterium and oxygen 18 in precipitation: Modelling of the isotopic effects during snow formation, J. Geophys. Res, 89, 11 749–11 757, 1984.
Jouzel, J., Masson-Delmotte, V., Cattani, O., Dreyfus, G., Falourd, S., Hoffmann, G., Minster, B., Nouet, J., Barnola, J. M., Chappellaz, J., Fischer, H., Gallet, J. C., Johnsen, S., Leuenberger, M., Loulergue, L., Luethi, D., Oerter, H., Parrenin, F., Raisbeck, G., Raynaud, D., Schilt, A., Schwander, J., Selmo, E., Souchez, R., Spahni, R., Stauffer, B., Steffensen, J. P., Stenni, B., Stocker, T. F., Tison, J. L., Werner, M., and Wolff, E. W.: Orbital and millennial Antarctic climate variability over the last 800 000 years, Science, in press, 2007.
Kohno, M., Kipfstuhl, S., Lambrecht, A., Fuji, Y., and Kronz, A.: Tephra study on the EPICA-DML ice core, EGU 2005 poster, Geophys. Res. Abstr., 7, 07573, 2005.
Langway, C. C., Osada Jr., K., Clausen, H. B., Hammer, C. U., and Shoji, H.: A 10 century comparison of prominent bipolar volcanic events in ice cores, J. Geophys. Res., 100, 16 241–16 247, 1995.
Narcisi, B., Petit, J. R., Delmonte, B., Basile-Doelsch, I., and Maggi, V.: Characteristics and sources of tephra layers in the EPICA-Dome C ice record (East Antarctica): implications for past atmospheric circulation and ice core stratigraphic correlations, Earth Planet. Sci. Lett., 239, 253–265, 2005.
NGRIP-project-members: High-resolution record of the Northern Hemisphere climate extending into the last interglacial period, Nature, 431, 147–151, 2004.
Parrenin, F., Barnola, J.-M., Beer, J., Blunier, T., Castellano, E., Chappellaz, J., Dreyfus, G., Fischer, H., Fujita, S., Jouzel, J., Kawamura, K., Lemieux, B., Loulergue, L., Masson-Delmotte, V., Narcisi, B., Petit, J.-R., Raisbeck, G., Raynaud, D., Ruth, U., Schwander, J., Severi, M., Spahni, R., Steffensen, J. P., Svensson, A., Udisti, R., Waelbroeck, C., and Wolff, E.: The EDC3 chronology for the EPICA Dome C ice core, Clim. Past Discuss., 3, 575–606, 2007.
Pattyn, F.: A new three-dimensional higher-order thermomechanical ice-sheet model: basic sensititvity, ice stream development, and ice flow across subglacial lakes, J. Geophys. Res., 108(B8), 2382–2396, doi:10.1029/2002JB002329, 2003.
Petit, J. R., Jouzel, J., Raynaud, D., Barkov, N. I., Barnola, J.-M, Basile, I., Bender, M., Chappellaz, J., Davis, M., Delaygue, G., Delmotte, M., Kotlyakov, V. M., Legrand, M., Lipenkov, V. Y., Lorius, C., Pepin, L., Ritz, C., Saltzman, E., and Stievenard, M.: Climate and atmospheric history of the past 420 000 years from the Vostok ice core, Antarctica, Nature, 399, 6735, 429–436, 1999.
Raisbeck, G. M., Yiou, F., Cattani, O. and Jouzel, J.: $^10$Be evidence for the Matuyama–Brunhes geomagnetic reversal in the EPICA Dome C ice core, Nature, 444, 82–84, 2006.
Röthlisberger, R., Bigler, M., Hutterli, A., Sommer, S., Stauffer, B., Junghans, H. G., and Wagenbach, D.: Technique for continuous high-resolution analysis of trace substances in firn and ice cores, Environ. Sci. Technol., 34, 338–342, 2000.
Rotschky, G., Eisen, O., Wilhelms, F., Nixdorf, U., and Oerter, H.: Spatial distribution of surface mass balance on Amundsenisen plateau, Antarctica, derived from ice-penetrating radar studies, Ann. Glaciol., 39, 265–270, 2004.
Ruth, U., Barnola, J.-M., Beer, J., Bigler, M., Blunier, T., Castellano, E., Fischer, H., Fundel, F., Hybrechts, P., Kaufmann, P., Kipfstuhl, S., Lambrecht, A., Morganti, A., Parrenin, F., Rybak, O., Severi, M., Udisti, R., Wilhelms, F., and Wolff, E.: "EDML1": A chronology for the EDML ice core, Antarctica, over the last 150 000 years, Clim. Past Discuss., 3, 549–574, 2007.
Schwander, J., Jouzel, J., Hammer, C. U., Petit, J. R., Udisti, R., and Wolff, E.: A tentative chronology for the EPICA Dome Concordia ice core, Geophys. Res. Lett., 28, 22, 4243–4246, 2001.
Traufetter, F., Oerter, H., Fischer, H., Weller, R., and Miller, H.: Spatio-temporal variability in volcanic sulfate deposition over the past 2 kyr in snow pits and firn cores from Amundsenisen, Antarctica, J. Glaciol., 50, 168, 137–146, 2004.
Traversi, R., Becagli, S., Castellano, E., Migliori, A., Severi, M., and Udisti, R.: High resolution Fast Ion Chromatography (FIC) measurements of chloride, nitrate and sulfate along the EPICA Dome C ice core, Ann. Glaciol. 35, 291–298, 2000.
Udisti, R., Becagli, S., Castellano, E., Mulvaney, R., Schwander, J., Torcini, S., and Wolff, E.: Holocene electrical and chemical measurements from the EPICA-Dome C ice core, Ann. Glaciol., 30, 20–26, 2000.
Udisti, R., Becagli, S., Castellano, E., Delmonte, B., Jouzel, J., Petit, J.-R., Schwander, J., Stenni, B., and Wolff, E.: Stratigraphic correlations between the European Project for Ice Coring in Antarctica (EPICA) Dome C and Vostok ice cores showing the relative variations of snow accumulation over the past 45 kyr, J. Geophys. Res., 109, D08101, doi:10.1029/2003JD004180, 2004.
Vinther, B. M., Clausen, H. B., Johnsen, S. J., Rasmussen, S. O., Andersen, K. K., Buchardt, S. L., Dahl-Jensen, D., Seierstad, I. K., Siggaard-Andersen, M.-L., Steffensen, J. P., Svensson, A., Olsen, J., and Heinemeier, J.: A synchronized dating of three Greenland ice cores throughout the Holocene, J. Geophys. Res., 111, D13102, doi:10.1029/2005JD006921, 2006.
Wolff, E. W., Basile, I., Petit, J.-R., and Schwander, J.: Comparison of Holocene electrical records from Dome C and Vostok, Ann. Glaciol., 29, 89–93, 1999.
Wolff, E. W., Cook, E., Barnes, P. R. F., and Mulvaney, R.: Signal variability in replicate ice cores, J. Glaciol., 51, 462–468, 2005.
Wolff, E. W., Fischer, H., Fundel, F., Ruth, U., Twarloh, B., Littot, G. C., Mulvaney, R., Röthlisberger, R., de Angelis, M., Boutron, C. F., Hansson, M., Jonsell, U., Hutterli, M. A., Lambert, F., Kaufmann, P., Stauffer, B., Stocker, T. F., Steffensen, J. P., Bigler, M., Siggaard-Andersen, M. L., Udisti, R., Becagli, S., Castellano, E., Severi, M., Wagenbach, D., Barbante, C., Gabrielli, P., and Gaspari, V.: Southern Ocean sea-ice extent, productivity and iron flux over the past eight glacial cycles, Nature, 440, 491–496, 2006.