Results 11 to 20 of about 35,030 (215)
IceChrono1: a probabilistic model to compute a common and optimal chronology for several ice cores [PDF]
Geoscientific Model Development, 2015 Polar ice cores provide exceptional archives of past environmental conditions. The dating of ice cores and the estimation of the age-scale uncertainty are essential to interpret the climate and environmental records that they contain.
F. Parrenin +5 more
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Geosciences, 2022 Antarctic sea ice is an essential component of the global climate system. Reconstructions of Antarctic sea ice from marine sediment cores are a vital resource to improve the representation of Antarctic sea ice in climate models and to better understand ...
Claire S. Allen, Zelna C. Weich
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An improved north–south synchronization of ice core records around the 41 kyr 10Be peak [PDF]
Climate of the Past, 2017 Using new high-resolution 10Be measurements in the NGRIP, EDML and Vostok ice cores, together with previously published data from EDC, we present an improved synchronization between Greenland and Antarctic ice cores during the Laschamp geomagnetic ...
G. M. Raisbeck +12 more
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Proceedings of the National Academy of Sciences, 1997 Air trapped in glacial ice offers a means of reconstructing variations in the concentrations of atmospheric gases over time scales ranging from anthropogenic (last 200 yr) to glacial/interglacial (hundreds of thousands of years). In this paper, we review the glaciological processes by which air is trapped in the ice and discuss ...
M, Bender, T, Sowers, E, Brook
openaire +2 more sources
Snow-ice contribution to the structure of sea ice in the Amundsen Sea, Antarctica
Annals of Glaciology, 2020 The widespread occurrence of snow-ice formation on the pack ice plays a critical role in the mass balance of Antarctic sea ice. The stable isotope composition, ice texture and salinity of eight ice cores, obtained from the Amundsen Sea during the Oden ...
Lijun Tian +3 more
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Case Studies in Thermal Engineering, 2023 Ice cores from polar zones could determine ice dating and biodiversity. Ice cores retrieved in hot-water ice-coring drilling partly melted owing to moderate drilling speed of annular drill head with many nozzles, which was largely depended on the heat ...
An Liu +5 more
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Continuous measurements of methane mixing ratios from ice cores [PDF]
Atmospheric Measurement Techniques, 2012 This work presents a new, field-deployable technique for continuous, high-resolution measurements of methane mixing ratios from ice cores. The technique is based on a continuous flow analysis system, where ice core samples cut along the long axis of an ...
C. Stowasser +10 more
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Agile Sub-Ice Geological (ASIG) Drill development and Pirrit Hills field project
Annals of Glaciology, 2021 A new drilling system was developed by the US Ice Drilling Program (IDP) to rapidly drill through overlying ice to collect subglacial rock cores. The Agile Sub-Ice Geological (ASIG) Drill system is capable of drilling up to 700 m of ice in a continuous ...
Tanner Kuhl +5 more
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IODP Drilling of the “Shackleton Sites” on the Iberian Margin: A Plio-Pleistocene Marine Reference Section of Millennial-Scale Climate Change [PDF]
Scientific Drilling, 2010 Few marine sediment cores have played such a pivotal role in paleoclimate research as those recovered from the Portuguese Margin, including MD95-2039 to MD95-2042 (hereafter referred to as the “Shackleton sites”) (Fig. 1).
Henrique Duarte +4 more
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Physical and mechanical properties of winter first-year ice in the Antarctic marginal ice zone along the Good Hope Line [PDF]
The Cryosphere, 2022 As part of the 2019 Southern oCean seAsonal Experiment (SCALE) Winter Cruise of the South African icebreaker SA Agulhas II, first-year ice was sampled at the advancing outer edge of the Antarctic marginal ice zone along a 150 km Good Hope Line transect ...
S. Skatulla +24 more
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