Method for Quantification of Fatty Acids in Ice Cores and Sea-Ice Cores Using Liquid Chromatography High-Resolution Mass Spectrometry [PDF]
ACS Measurement Science AuMarine-sourced fatty acids provide a promising new suite of proxies for past sea-ice reconstructions, validated using ice cores from Bouvet Island, Greenland, and Alaska.
Siobhán Johnson +3 more
doaj +11 more sources
Model evidence for a seasonal bias in Antarctic ice cores [PDF]
Nature 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
Ice Cores as a Source for Antimicrobials: From Bioprospecting to Biodesign [PDF]
BioDesign Research, 2023 The golden age has passed for antibiotic discovery, and while some antibiotics are currently in various phases of clinical trials in the United States, many pharmaceutical companies have abandoned antibiotic research.
Ying-Chiang Jeffrey Lee, Bahar Javdan
doaj +2 more sources
Mapping the in situ microspatial distribution of ice algal biomass through hyperspectral imaging of sea-ice cores [PDF]
Scientific Reports, 2020 Ice-associated microalgae make a significant seasonal contribution to primary production and biogeochemical cycling in polar regions. However, the distribution of algal cells is driven by strong physicochemical gradients which lead to a degree of ...
Emiliano Cimoli +9 more
doaj +2 more sources
A stratigraphy-based method for reconstructing ice core orientation
Annals 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 +3 more sources
Changes of the bacterial abundance and communities in shallow ice cores from Dunde and Muztagata glaciers, Tibetan Plateau [PDF]
Frontiers in Microbiology, 2016 In this study, six bacterial community structures were analyzed from the Dunde ice core (9.5-m-long) using 16S rRNA gene cloning library technology.
Yong Chen +9 more
doaj +2 more sources
Synchronizing Ice Cores From the Renland and Agassiz Ice Caps to the Greenland Ice Core Chronology [PDF]
Journal of Geophysical Research D: Atmospheres, 2008 Four ice cores from the Agassiz ice cap in the Canadian high arctic and one ice core from the Renland ice cap in eastern Greenland have been synchronized to the Greenland Ice Core Chronology 2005 (GICC05) which is based on annual layer counts in the DYE‐3, GRIP and NGRIP ice cores.
Dorthe Dahl-Jensen +2 more
exaly +3 more sources
Regional variability of diatoms in ice cores from the Antarctic Peninsula and Ellsworth Land, Antarctica [PDF]
The 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
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Local-scale spatial variability in firn properties in Southwest Greenland
Frontiers 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
Age ranges of the Tibetan ice cores with emphasis on the Chongce ice cores, western Kunlun Mountains [PDF]
The 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