Results 1 to 10 of about 35,011 (196)

Model evidence for a seasonal bias in Antarctic ice cores [PDF]

open access: yesNature Communications, 2018
Periodic changes in the tilt of the Earth’s axis alter the distribution of incoming solar radiation. Here, the authors show that the temperature response to this forcing seemingly differs in models and Antarctic ice cores, with a better agreement reached
Michael P. Erb   +6 more
doaj   +2 more sources

Regional variability of diatoms in ice cores from the Antarctic Peninsula and Ellsworth Land, Antarctica [PDF]

open access: yesThe Cryosphere, 2022
The presence of marine microfossils (diatoms) in glacier ice and ice cores has been documented from numerous sites in Antarctica, Greenland, as well as from sites in the Andes and the Altai mountains, and attributed to entrainment and transport by winds.
D. R. Tetzner   +3 more
doaj   +1 more source

Local-scale spatial variability in firn properties in Southwest Greenland

open access: yesFrontiers in Earth Science, 2022
The increasing mass loss from the Greenland ice sheet is becoming growingly important to present-day global sea level rise. Meltwater export to the ocean may be amplified by near-surface ice layers in firn (i.e., snow that has survived at least one melt ...
Jing Xiao   +8 more
doaj   +1 more source

A multi-ice-core, annual-layer-counted Greenland ice-core chronology for the last 3800 years: GICC21 [PDF]

open access: yesClimate of the Past, 2022
Ice-core timescales are vital for the understanding of past climate; hence they should be updated whenever significant amounts of new data become available.
G. Sinnl   +9 more
doaj   +1 more source

A Comparison of Decimeter Scale Variations of Physical and Photobiological Parameters in a Late Winter First-Year Sea Ice in Southwest Greenland

open access: yesJournal of Marine Science and Engineering, 2021
Small-scale variation in the physical and biological properties of sea ice was examined by collecting nine sea ice cores within 1 m2 in a land-fast first-year ice in southwest Greenland in late winter.
Lars Chresten Lund-Hansen   +3 more
doaj   +1 more source

A stratigraphy-based method for reconstructing ice core orientation

open access: yesAnnals of Glaciology, 2021
Ever since the first deep ice cores were drilled, it has been a challenge to determine their original, in-situ orientation. In general, the orientation of an ice core is lost as the drill is free to rotate during transport to the surface. For shallow ice
Julien Westhoff   +8 more
doaj   +1 more source

Age ranges of the Tibetan ice cores with emphasis on the Chongce ice cores, western Kunlun Mountains [PDF]

open access: yesThe Cryosphere, 2018
An accurate chronology is the essential first step for a sound understanding of ice core records. However, dating ice cores drilled from the high-elevation glaciers is challenging and often problematic, leading to great uncertainties.
S. Hou   +10 more
doaj   +1 more source

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

open access: yesClimate of the Past, 2015
Whereas ice cores from high-accumulation sites in coastal Antarctica clearly demonstrate annual layering, it is debated whether a seasonal signal is also preserved in ice cores from lower-accumulation sites further inland and particularly on the East ...
A. Svensson   +15 more
doaj   +1 more source

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

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

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