On the occurrence of annual layers in Dome Fuji ice core early Holocene ice

• DOI: 10.5194/cp-11-1127-2015
• Publication Date: 2015-09-15T13:30:30Z
• Authors: A. Svensson; S. Fujita; M. Bigler; M. Braun; R. Dallmayr; V. Gkinis; K. Goto-Azuma; M. Hirabayashi; K. Kawamura; S. Kipfstuhl; H. A. Kjær; T. Popp; M. Simonsen; J. P. Steffensen; P. Vallelonga; B. M. Vinther
• Keywords: Ice core; Dome (geology); Layering

Abstract. Whereas ice cores from high-accumulation sites in coastal Antarctica clearly demonstrate annual layering, it is debated whether a seasonal signal also preserved lower-accumulation further inland and particularly on the East Antarctic Plateau. In this study, we examine 5 m of early Holocene Dome Fuji (DF) core at high temporal resolution by continuous flow analysis. The was continuously analysed for concentrations dust, sodium, ammonium, liquid conductivity, water isotopic composition. Furthermore, dielectric profiling performed solid ice. most ice, multi-parameter impurity data set appears to resolve variability although identification layers not always unambiguous. study thus provides information snow accumulation process central Antarctica. A layer counting based same principles as those previously applied NGRIP (North Greenland Ice Project) EPICA (European Project Coring Antarctica) Dronning Maud Land (EDML) leads mean thickness DF 3.0 ± 0.3 cm that compares well existing estimates. measured section linked EDML through characteristic pattern three significant acidity peaks are present both cores. corresponding has recently been dated number years identified independently two agree within error We therefore conclude that, first order, core. This case demonstrates feasibility determining annually deposited strata It opens possibility resolving Eemian where estimated have greater than Holocene.