Abstract:
This award supports a project to collect and develop high-resolution ice core records from the Dry Valleys region of Antarctica, and provide interpretations of interannual to decadal-scale climate variability during the last 2000 years (late Holocene). The project will test hypotheses related to ocean/atmosphere teleconnections (e.g., El Nino Southern Oscillation, Antarctic Oscillation) that may ... be responsible for major late Holocene climate events such as the Little Ice Age in the Southern Hemisphere. Conceptual and quantitative models of these processes in the Dry Valleys during the late Holocene are critical for understanding recent climate changes, and represent the main scientific merit of the project. We plan to collect intermediate-length ice cores (100-200m) at four sites along transects in Taylor Valley and Wright Valley, and analyze each core at high resolution for stable isotopes (d18O, dD), major ions (Na+, Mg2+, Ca2+, K+, NH4+, Cl-, NO3-, SO42-, MSA), and trace elements (Al, Fe, S, Sr, B). A suite of statistical techniques will be applied to the multivariate glaciochemical dataset to identify chemical associations and to calibrate the time-series records with available instrumental data.
USACE Cold Regions Research and Engineering Laboratory
72 Lyme Road
City:
Hanover
Province or State:
NH
Postal Code:
03755-1290
Country:
USA
Publications/References
Arcone, S.A., and Kreutz, K.J., 2008, GPR reflection profiles of Clark and Commonwealth Glaciers in the Dry Valleys, Antarctica, Annals of Glaciology, in press.
Williamson, B.R., Kreutz, K.J., Mayewski, P.A., Bertler, N.A.N., Sneed, S., Handley, M., and Introne, D., 2007, A coastal transect of McMurdo Dry Valleys snow and firn: marine and terrestrial influences on ... glaciochemistry, Journal of Glaciology, 53(183), 1-13.
Bertler, N.A.N., Naish, T.R., Oerter, H., Kipfstuhl, S., Barrett, P.J., Mayewski, P.A., and Kreutz, K.J., 2006, The effects of joint ENSO-Antarctic Oscillation forcing on the McMurdo Dry Valleys, Antarctica, Antarctic Science, 18(4), 507-514.
Kreutz, K.J., 2006, Glaciochemistry, in Elias, S.A. ed., Encyclopedia of Quaternary Science, Elsevier Publishers, London, 1192-1998.
Osterberg, E., Handley, M., Sneed, S., Mayewski, P.A., and Kreutz, K.J., 2006, A continuous ice core melter systems with discrete sampling for major ions, trace metals, and stable isotopes, Environmental Science and Technology, 40, 3355-3361.
Bertler, N.A.N., Mayewski, P.A., Aristarain, A., Barrett, P., Becagli, S., Bernardo, R., Bo, S., Curran, M., Qin, D., Dixon, D., Ferron, F., Fischer, H., Frey, M., Frezzoti, M., Fundel, F., Genthon, C., Gragnani, R., Hamilton, G., Handley, M., Hong, S., Isaksson, E., Kang, J., Ren, J., Kamiyama, K., Kanamori, S., Karkas, E., Karlof, L., Kaspari, S., Kreutz, K.J., Kurbatov, A., Meyerson, E., Ming, Y., Zhang, M., Motoyama, H., Mulvaney, R., Oerter, H., Osterberg, E., Proposito, M., Pyne, A., Ruth, U., Simoes, J., Smith, B., Sneed, S., Teinila, K., Traufetter, F., Udisti, R., Virkkula, A., Watanabe, O., Williamson, B., Winther, J.-G., Li, Y., Wolff, E., Li, Z., Zielinski, A., Snow chemistry across Antarctica, 2005, Annals of Glaciology, 41, 167-179.
Bertler, N.A.N., Barrett, P., Mayewski, P.A., Fogt, R., Kreutz, K.J., and Shulmeister, J., 2004, El Nino suppresses Antarctic warming, Geophysical Research Letters, 31, L15207, doi:10.1029/2004GL020749.
Bertler, N.A.N., Mayewski, P.A., Barrett, P.J., Sneed, S.B., Handley, M.J., and Kreutz, K.J., 2004, Monsoonal circulation of the McMurdo Dry Valleys, Ross Sea region, Antarctica: signal from the snow chemistry, Annals of Glaciology, 39, 135-145.
Bertler, N.A.N., Barrett, P., Mayewski, P.A., Fogt, R., Kreutz, K.J., and Shulmeister, J., 2005, Reply to comment by Doran et al. on “El Nino suppresses Antarctic warming”, Geophysical Research Letters, 32, L07707, doi:10.1029/2005GL022595.
