Results 31 to 40 of about 10,153 (261)
Frontiers in Plant Science, 2017 The age of living massive olive trees is often assumed to be between hundreds and even thousands of years. These estimations are usually based on the girth of the trunk and an extrapolation based on a theoretical annual growth rate.
Yael Ehrlich +3 more
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Frontiers in Marine Science, 2022 The Canadian Arctic is warming three times faster than the rest of the planet. The impact of climate change on the Arctic carbon cycle, and in particular for Baffin Bay, remains poorly constrained.
Aislinn Fox, Brett D. Walker
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Transport of Aged Dissolved Organic Carbon via the Surface Current Revealed by Radiocarbon
Geophysical Research Letters, 2023 The East Sea (also known as the Japan Sea) is connected to the Northwest Pacific via shallow straits and has independent deep water circulation, as a model miniature ocean. The radiocarbon age of dissolved organic carbon (DOC) in the East Sea ranged from
Yeongjin Ryu +5 more
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Radiocarbon Measurements Reveal Underestimated Fossil CH4 and CO2 Emissions in London
Geophysical Research Letters, 2023 Radiocarbon (14C) is a powerful tracer of fossil emissions because fossil fuels are entirely depleted in 14C, but observations of 14CO2 and especially 14CH4 in urban regions are sparse.
Giulia Zazzeri +8 more
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Ecology and Evolution, 2020 Food web dynamics are vital in shaping the functional ecology of ecosystems. However, trophic ecology is still in its infancy in groundwater ecosystems due to the cryptic nature of these environments.
Mattia Saccò +9 more
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Recent Warming Fuels Increased Organic Carbon Export From Arctic Permafrost
AGU Advances, 2021 Climate‐driven thawing of Arctic permafrost renders its vast carbon reserves susceptible to microbial degradation, serving as a potentially potent positive feedback hidden within the climate system.
Xiaowen Zhang +9 more
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GCB Bioenergy, 2020 Perennial bioenergy crops have been shown to increase soil organic carbon (SOC) stocks, potentially offsetting anthropogenic C emissions. The effects of perennial bioenergy crops on SOC are typically assessed at shallow depths (30 cm) SOC stocks would be
Eric W. Slessarev +6 more
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14C Research at the Laboratory for the Analysis of Radiocarbon with AMS (LARA), University of Bern
CHIMIA, 2020 The Laboratory for the Analysis of Radiocarbon with AMS (LARA) at the University of Bern measures the radioactive carbon isotope 14C with accelerator mass spectrometry (AMS) in different applications.
Sönke Szidat
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Detection of radiocarbon in the cyclotrino [PDF]
Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, 1990 Abstract A small low-energy cyclotron (the “cyclotrino”), which was proposed for direct detection of radiocarbon in 1981, has now detected radiocarbon at natural abundance. This device combines the suppression of background through the use of negative ions with the high intrinsic mass resolution of a cyclotron.
Bertsche, K.J. +3 more
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The Problems of Radiocarbon Dating [PDF]
Science, 2005 In their Perspective “The boon and Bane of radiocarbon dating” (21 Jan., p. [362][1]), T. P. Guilderson et al. raise some important issues in radiocarbon (14C) dating. They discuss the problems of calibrating 14C dates that fall within “age plateaus” of the 14C calibration curve and ...
Maarten, Blaauw, J Andrés, Christen
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