Results 11 to 20 of about 1,399 (214)

Theoretical and Experimental Analysis for Cleaning Ice Cores from Estisol^TM 140 Drill Liquid

Applied Sciences, 2021
To reconstruct climate history of the past 1.5 Million years, the project: Beyond EPICA Oldest Ice (BEOI) will drill about 2700 m of ice core in East Antarctica (2021–2025). As drilling fluid, an aliphatic ester fluid, EstisolTM 140, will be used.
Francesco Enrichi, Dorthe Dahl-Jensen, Jørgen Peder Steffensen, Carlo Barbante   +3 more
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Variety and Distribution of Diatom-Based Sea Ice Proxies in Antarctic Marine Sediments of the Past 2000 Years

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
doaj   +1 more source

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, L. Bazin, E. Capron, A. Landais, B. Lemieux-Dudon, V. Masson-Delmotte   +5 more
doaj   +1 more source

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, A. Cauquoin, J. Jouzel, A. Landais, J.-R. Petit, V. Y. Lipenkov, J. Beer, H.-A. Synal, H. Oerter, S. J. Johnsen, J. P. Steffensen, A. Svensson, F. Yiou   +12 more
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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, Yongli Gao, Blake Weissling, Stephen F. Ackley   +3 more
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Theoretical and numerical simulation research about annular nozzle parameters influence on heat transfer in hot-water ice-coring drilling

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, Pavel G. Talalay, Xiaopeng Fan, Yang Yang, Da Gong, Rusheng Wang   +5 more
doaj   +1 more source

The future of ice coring: International Partnerships in Ice Core Sciences (IPICS) [PDF]

PAGES news, 2006
Ice cores provide information about past climate and environmental conditions on timescales from decades to hundreds of millennia, and direct records of the composition of the atmosphere. As such, they are cornerstones of global change research. For example, ice cores play a central role in showing how closely climate and greenhouse gas concentrations ...
Brook, Edward J., Wolff, Eric W., Dahl-Jensen, Dorthe, Fischer, Hubertus, Steig, Eric J.   +4 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, C. Buizert, V. Gkinis, J. Chappellaz, S. Schüpbach, M. Bigler, X. Faïn, P. Sperlich, M. Baumgartner, A. Schilt, T. Blunier   +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, Chris Gibson, Jay Johnson, Grant Boeckmann, Elliot Moravec, Kristina Slawny   +5 more
doaj   +1 more source

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, R. R. Audh, R. R. Audh, A. Cook, E. Hepworth, E. Hepworth, S. Johnson, S. Johnson, D. C. Lupascu, D. C. Lupascu, K. MacHutchon, R. Marquart, R. Marquart, T. Mielke, T. Mielke, E. Omatuku, E. Omatuku, F. Paul, F. Paul, T. Rampai, T. Rampai, J. Schröder, C. Schwarz, M. Vichi, M. Vichi   +24 more
doaj   +1 more source