Core handling and processing for the WAIS Divide ice-core project

On 1 December 2011 the West Antarctic Ice Sheet (WAIS) Divide ice-core project reached its final depth of 3405 m. The WAIS Divide ice core is not only the longest US ice core to date, but is also the highest-quality deep ice core, including ice from the brittle ice zone, that the US has ever recovered. The methods used at WAIS Divide to handle and log the drilled ice, the procedures used to safely retrograde the ice back to the US National Ice Core Laboratory (NICL) and the methods used to process and sample the ice at the NICL are described and discussed

Core handling and processing for the WAIS Divide ice-core project

On 1 December 2011 the West Antarctic Ice Sheet (WAIS) Divide ice-core project reached its final depth of 3405 m. The WAIS Divide ice core is not only the longest US ice core to date, but is also the highest-quality deep ice core, including ice from the brittle ice zone, that the US has ever recovered. The methods used at WAIS Divide to handle and log the drilled ice, the procedures used to safely retrograde the ice back to the US National Ice Core Laboratory (NICL) and the methods used to process and sample the ice at the NICL are described and discussed

Structural insights into the transcriptional and translational roles of Ebp1.

Accepted versio

Memory

https://digitalcommons.library.umaine.edu/mmb-vp-copyright/4246/thumbnail.jp

The Lapita Occupation at Naitabale, Moturiki Island, Central Fiji

In 2003 the authors discovered and excavated a Lapita site at Naitabale close to the southern end of Moturiki Island (central Fiji). Today the site is 350 m inland from the coast, but in Lapita times it was located behind the active beach ridge. A large collection of potsherds (including 92 dentate-stamped or incised Lapita sherds), shell, and animal bones was recovered, together with a human burial. Sherd decorations show affinities with the Western Lapita Province rather than the Eastern Lapita Province (which includes Fiji). Temper analyses of 45 Lapita sherds do not show any unmistakably exotic (to Fiji) pottery, but 29 percent are nonlocal to Moturiki and nearby islands. Fish bones are mostly from inshore species (dominated by Scaridae), while nonfish vertebrates are dominated by turtle and include dog and chicken. Shellfish remains are dominated by gastropods, mostly 'Strombus' spp. (43 percent of gastropod MNI). The surf clam ('Atactodea striata') accounts for 38 percent of bivalve MNI, with 'Anadara antiquata' and 'Gafrarium peetinatum' each representing 14 percent of the bivalve MNI. The skeleton is that of a woman (Mana) 161-164 cm tall who died at 40-60 years of age. Six radiocarbon dates from bones overlap 2740-2739 cal. years B.P. (790-789 B.C.). The mandible lacks antegonial notches but is not a proper rocker jaw. The cranium was better preserved than any Lapita-associated skeleton hitherto described, which allowed the head to be reconstructed. Stable-isotope analyses show that her diet contained significant amounts of reef foods but was probably dominated by terrestrial plants. The Lapita occupation of Naitabale is likely to have begun by 2850 cal. years B.P. (900 B.C.). Radiocarbon dates and pottery decorative styles both suggest Naitabale was first occupied within the early part of the Lapita history of Fiji

The Lapita occupation at Naitabale, Moturiki Island, central Fiji

Patrick D. Nunn, Tomo Ishimura, William R. Dickinson, Kazumichi Katayama, Frank Thomas, Roselyn Kumar, Sepeti Matararaba, Janet Davidson, and Trevor Worth

Core handling and processing for the WAIS Divide ice-core project

International audienceOn 1 December 2011 the West Antarctic Ice Sheet (WAIS) Divide ice-core project reached its final depth of 3405 m. The WAIS Divide ice core is not only the longest US ice core to date, but is also the highest-quality deep ice core, including ice from the brittle ice zone, that the US has ever recovered. The methods used at WAIS Divide to handle and log the drilled ice, the procedures used to safely retrograde the ice back to the US National Ice Core Laboratory (NICL) and the methods used to process and sample the ice at the NICL are described and discussed