Results 41 to 50 of about 158,813 (385)
Journal of Space Weather and Space Climate, 2023 Cosmogenic nuclides – 14C from tree rings and 10Be and 36Cl from ice cores serve as an effective proxy for past extreme solar energetic particle (SEP) events.
Miyake Fusa +4 more
doaj +1 more source
Iron Age to Medieval entomogamous vegetation and Rhinolophus hipposideros roost in south-eastern Wales (UK) [PDF]
, 2006 Karst cave systems are well developed in Wales (UK) and, in some instances, constitute important bat roosts. Ogof Draenen, near Blaenavon in south-east Wales, is the most recent major cave discovery (1994) with already > 70 km of passages explored ...
Bronk +24 more
core +1 more source
The myths and realities of Bayesian chronological modeling revealed [PDF]
, 2017 We review the history of Bayesian chronological modeling in archaeology and demonstrate that there has been a surge over the past several years in American archaeological applications.
Hamilton, W. Derek, Krus, Anthony M.
core +1 more source
Ventilation of the North Atlantic Ocean during the Last Glacial Maximum: A comparison between simulated and observed radiocarbon ages [PDF]
, 2003 The distribution of radiocarbon during simulations of the Last Glacial Maximum with a coupled ocean-atmosphere-sea ice model is compared with sediment core measurements from the equatorial Atlantic Ceara Rise, Blake Ridge, Caribbean Sea, and South China ...
Adkins, J. F. +3 more
core +1 more source
Composition and consequences of the IntCal20 radiocarbon calibration curve
Quaternary Research, 2020 Radiocarbon calibration is necessary to correct for variations in atmospheric radiocarbon over time. The IntCal working group has developed an updated and extended radiocarbon calibration curve, IntCal20, for Northern Hemisphere terrestrial samples from ...
P. Reimer
semanticscholar +1 more source
Copenhagen Radiocarbon Dates VI [PDF]
Radiocarbon, 1960 The following list comprises a selected number of measurements made up to November 1963. Age calculations are based on a contemporary value equal to 95% of the activity of the NBS oxalic-acid standard, and on a half life for C14of 5570 ± 30 yr.Results are expressed in years before 1950 and in the b.c.-a.d. scales.
openaire +5 more sources
Łódź Radiocarbon Dates III [PDF]
Radiocarbon, 1984 The results presented in this list were obtained from 1986 to 1989. Equipment, measurement and treatment of samples are as reported previously (Kanwiszer & Trzeciak 1984: 111). Age calculations are based on a contemporary value equal to 95% of the activity of NBS oxalic acid standard and on the conventional half-life for 14C of 5568 ± 30 years ...
Andrzej Kanwiszer, Paweł Trzeciak
openaire +3 more sources
Elementa: Science of the Anthropocene, 2018 The extensive release of oil during the 2010 Deepwater Horizon spill in the northern Gulf of Mexico perturbed the pelagic ecosystem and associated sinking material. To gauge the recovery and post-spill baseline sources, we measured ?14C, d13C and d34S of
Jeffrey P. Chanton +7 more
doaj +1 more source
Frontiers in Earth Science, 2020 Carbon capture and storage (CCS) is considered a key technology for reducing CO2 emissions into the atmosphere. Nonetheless, there are concerns that if injected CO2 migrates in the crust, it may trigger slip of pre-existing faults.
Yuji Sano +15 more
doaj +1 more source
Mesolithic projectile variability along the southern North Sea basin (NW Europe) : hunter-gatherer responses to repeated climate change at the beginning of the Holocene [PDF]
, 2019 This paper investigates how former hunter-gatherers living along the southern North Sea coast in NW Europe adapted to long-term and short-term climatic and environmental changes at the beginning of the Holocene.
Crombé, Philippe
core +2 more sources