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Snow Stratigraphic Investigations at Dome C, East Antarctica

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dc.creator Palais, Julie M.
dc.date.accessioned 2012-08-01T14:33:23Z
dc.date.available 2012-08-01T14:33:23Z
dc.date.issued 1984
dc.identifier.citation Palais, Julie M. 1984. Snow Stratigraphic Investigations at Dome C, East Antarctica: A Study of Depositional and Diagenetic Processes. Institute of Polar Studies Report No. 78, Institute of Polar Studies, The Ohio State University, 121 pages. en_US
dc.identifier.issn 0078-415X
dc.identifier.uri http://hdl.handle.net/1811/52858
dc.description.abstract Current interest in studies of past climatic changes as revealed in long ice cores has stressed a need for understanding the development of the record preserved in these cores. This study investigates whether the record preserved at depth is more a function of depositional processes or of processes acting during or soon after burial. The temporal and areal variability of accumulation are investigated with a view to understanding how representative a single core is for a certain region, both in time and space. The validity of certain stratigraphic interpretations for dating is also assessed. Evidence from snow pit studies made at Dome C, East Antarctica, (74° 34'S, 123°l0'E) suggests that a major part of the depositional features are preserved with depth. Visible annual strata are composed of thin hard crusts overlying thicker layers of soft to medium hard snow. Depth hoar-like low density layers, when they occur, are most often found below the thin hard crusts. Cycles in the concentration of gross Beta radioactivity and microparticles occur and can be accurately dated when studied in conjunction with a detailed record of the visible stratigraphy. Accumulation stake measurements are used to study the formation of annual layers at Dome C. These measurements support the belief that depositional processes can account for a major part of the stratigraphic record. Strong near surface temperature gradients and the associated effects of thermal conduction, vapor diffusion and air convection contribute to the development of depth hoar and with time may lead to significant changes in the variations in hardness, density, grain size and possibly impurity concentration and total mass preserved in individual layers. en_US
dc.description.sponsorship National Science Foundation Grant DPP 76-23428. en_US
dc.language.iso en_US en_US
dc.publisher Institute of Polar Studies, The Ohio State University en_US
dc.relation.ispartofseries Institute of Polar Studies Report No. 78. en_US
dc.rights Copyright 1980, Used by permission of the author en_US
dc.subject Dome C, East Antarctica en_US
dc.subject Snow stratigraphic investigations en_US
dc.subject Ice cores en_US
dc.title Snow Stratigraphic Investigations at Dome C, East Antarctica en_US
dc.type Technical Report en_US