Results 21 to 30 of about 702,524 (252)

Apparent discrepancy of Tibetan ice core δ18O records may be attributed to misinterpretation of chronology [PDF]

open access: yesThe Cryosphere, 2019
Ice cores from the Tibetan Plateau (TP) are widely used for reconstructing past climatic and environmental conditions that extend beyond the instrumental period.
S. Hou   +8 more
doaj   +1 more source

Analyses of Two Ice Cores Drilled at the Ice-Sheet Margin in West Greenland [PDF]

open access: yes, 1988
In 1978 two ice cores were drilled to depths of 46 and 92 m respectively at Camp 3, at the west margin of the Greenland ice sheet. Both core drillings reached bedrock.
Clausen, H.B.   +3 more
core   +2 more sources

Theoretical and Experimental Analysis for Cleaning Ice Cores from EstisolTM 140 Drill Liquid

open access: yesApplied 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   +3 more
doaj   +1 more source

Variety and Distribution of Diatom-Based Sea Ice Proxies in Antarctic Marine Sediments of the Past 2000 Years

open access: yesGeosciences, 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]

open access: yesGeoscientific 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
doaj   +1 more source

An improved north–south synchronization of ice core records around the 41 kyr 10Be peak [PDF]

open access: yesClimate 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
doaj   +1 more source

Snow-ice contribution to the structure of sea ice in the Amundsen Sea, Antarctica

open access: yesAnnals 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
doaj   +1 more source

Theoretical and numerical simulation research about annular nozzle parameters influence on heat transfer in hot-water ice-coring drilling

open access: yesCase 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
doaj   +1 more source

340 years of atmospheric circulation characteristics reconstructed from an eastern Antarctic Peninsula ice core [PDF]

open access: yes, 2006
Copyright @ 2006 American Geophysical Union (AGU)Precipitation delivery mechanisms for Dolleman Island (DI), located off the east coast of the Antarctic Peninsula, are investigated using reanalysis and back trajectory data. The Southern Annular Mode (SAM)
McGregor, GR   +8 more
core   +1 more source

Continuous measurements of methane mixing ratios from ice cores [PDF]

open access: yesAtmospheric 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
doaj   +1 more source

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