Document Type

Article

Publication Title

Annals of Glaciology

Publisher

International Glaciology Society

Rights and Access Note

This Item is protected by copyright and/or related rights. You are free to use this Item in any way that is permitted by the copyright and related rights legislation that applies to your use. In addition, no permission is required from the rights-holder(s) for educational uses. For other uses, you need to obtain permission from the rights-holder(s).

Publication Date

1999

First Page

38

Last Page

44

Issue Number

1

Volume Number

29

Abstract/ Summary

Six snow-pit records recovered from Siple Dome, West Antarctica, during 1994 are used to study seasonal variations in chemical (major ion and H2O2), isotopic (deuterium) and physical stratigraphic properties during the 1988-94 period. Comparison of dD measurements and satellite-derived brightness temperature for the Siple Dome area suggests that most seasonal dD maxima occur within ±4 weeks of each 1 January. Several other chemical species (H2O2, non-sea-salt (nss) SO42-, methanesulfonic acid and NO3-) show coeval peaks with dD, together providing an accurate method for identifying summer accumulation. Sea-salt-derived species generally peak during winter/spring, but episodic input is noted throughout some years. No reliable seasonal signal is identified in species with continental sources (nssCa2+, nssMg2+), NH4+ or nssCl-. Visible strata such as large depth-hoar layers (>5 cm) are associated with summer accumulation and its metamorphosis, but smaller hoar layers and crusts are more difficult to interpret. A multi-parameter approach is found to provide the most accurate dating of these snow-pit records, and is used to determine annual layer thicknesses at each site. Significant spatial accumulation variability exists on an annual basis, but mean accumulation in the sampled 10 km2 grid for the 1988-94 period is fairly uniform.

Citation/Publisher Attribution

Kreutz, K.J., Mayewski, P.A., Twickler, M.S., Whitlow, S.I., White, J.W.C., Shuman, C.A., Raymond, C.F., Conway, H., & McConnell, J.R. (1999). Seasonal variations of glaciochemical, isotopic and stratigraphic properties in Siple Dome (Antarctica) surface snow. Annals of Glaciology, 29(1), 38-44.

Publisher Statement

© Copyright 1999 International Glaciological Society

DOI

10.3189/172756499781821193

Version

publisher's version of the published document

Download

Share

 

Rights Statement

In Copyright - Educational Use Permitted.