Results 1 to 10 of about 158,813 (385)

IntCal09 and Marine09 radiocarbon age calibration curves, 0-50,000yeats cal BP [PDF]

Radiocarbon: An International Journal of Cosmogenic Isotope Research, 2009
The IntCal04 and Marine04 radiocarbon calibration curves have been updated from 12 cal kBP (cal kBP is here defined as thousands of calibrated years before AD 1950), and extended to 50 cal kBP, utilizing newly available data sets that meet the IntCal ...
Bard, Edouard, Bayliss, Alex, Beck, J. Warren, Blackwell, Paul G., Bronk Ramsey, Christopher, Buck, Caitlin E., Cheng, Hai, Edwards, R. Lawrence, Friedrich, Michael, Grootes, Pieter M., Guilderson, Thomas P., Haflidason, Haflidi, Hajdas, Irka, Hatte, Christine, Heaton, Timothy J., Hoffmann, Dirk L., Hogg, Alan G., Hughen, Konrad A., Kaiser, K. Felix, Kromer, Bernd, Manning, Sturt W., Niu, Mu, Reimer, Paula J., Reimer, Ron W., Richards, David A., Scott, E. Marian, Southon, John R., Staff, Richard A., Turney, Christian S. M., van der Plicht, Johannes   +29 more
core   +5 more sources

Tracing old carbon sources in Hungarian nectar samples using radiocarbon analysis [PDF]

Scientific Reports
In our previous research, we observed a discrepancy between the apparent14C age of the carbon content of honey samples and their known age, date of the collection.
Tamás Varga, Zsófi Sajtos, Botond Buró, Zsuzsa Lisztes-Szabó, István Futó, Mihály Molnár   +5 more
doaj   +2 more sources

Background Tests and Improvements at LAC-UFF Aiming at Sample Size Reduction in Foraminifera ¹⁴C Measurement

Geographies, 2023
Foraminifera are widely used in paleoclimatic and paleoceanographic studies, providing information about past ocean conditions. However, in order to use these tracers, it is essential to obtain an accurate chronology.
Bruna M. Netto, Kita D. Macario, Ayrton Assumpção, Maikel Diaz, Stewart J. Fallon, Xiaomei Xu, Ingrid Chanca, Carla Carvalho   +7 more
doaj   +1 more source

Sub-annual bomb radiocarbon records from trees in northern Israel

Scientific Reports, 2023
Spatial and temporal variations in the atmospheric bomb radiocarbon make it a very useful tracer and a dating tool. With the introduction of more atmospheric bomb radiocarbon records, the spatial and temporal changes in bomb radiocarbon are becoming ...
Harsh Raj, Yael Ehrlich, Lior Regev, Eugenia Mintz, Elisabetta Boaretto   +4 more
doaj   +1 more source

Discovery of annual growth in a modern olive branch based on carbon isotopes and implications for the Bronze Age volcanic eruption of Santorini

Scientific Reports, 2021
The volcanic eruption of Santorini in the Bronze Age left detectable debris across the Mediterranean, serving as an anchor in time for the region, synchronizing chronologies of different sites.
Yael Ehrlich, Lior Regev, Elisabetta Boaretto   +2 more
doaj   +1 more source

The IntCal20 Northern Hemisphere Radiocarbon Age Calibration Curve (0–55 cal kBP)

Radiocarbon: An International Journal of Cosmogenic Isotope Research, 2020
Radiocarbon (14C) ages cannot provide absolutely dated chronologies for archaeological or paleoenvironmental studies directly but must be converted to calendar age equivalents using a calibration curve compensating for fluctuations in atmospheric 14C ...
P. Reimer, W. Austin, E. Bard, A. Bayliss, P. Blackwell, C. Bronk Ramsey, M. Butzin, Hai Cheng, R. Edwards, M. Friedrich, P. Grootes, T. Guilderson, Irka Hajdas, T. Heaton, A. Hogg, K. Hughen, B. Kromer, S. Manning, R. Muscheler, J. Palmer, C. Pearson, J. van der Plicht, R. Reimer, D. Richards, E. Scott, J. Southon, C. Turney, L. Wacker, F. Adolphi, U. Büntgen, M. Capano, S. Fahrni, Alexandra Fogtmann-Schulz, R. Friedrich, P. Köhler, S. Kudsk, F. Miyake, J. Olsen, F. Reinig, M. Sakamoto, A. Sookdeo, S. Talamo   +41 more
semanticscholar   +1 more source

Chemical Analysis Suggesting Origin of Raw Materials and Possible Recycling of Late Antique Roman Glass from Vasileos Irakleiou Street 45, Thessaloniki in Northern Greece

Applied Sciences, 2022
During antiquity, it is known that glass was produced in specialized primary workshops in Levant and Egypt, and this glass was melted and formed into objects in secondary workshops, and distributed in most cities and towns of the Roman Empire.
Petros Karalis, Elissavet Dotsika, Athanasios Godelitsas, Anastasios Antonaras, Anastasia Elektra Poutouki, Maria Tassi   +5 more
doaj   +1 more source

ATMOSPHERIC RADIOCARBON FOR THE PERIOD 1950–2019

Radiocarbon: An International Journal of Cosmogenic Isotope Research, 2021
This paper presents a compilation of atmospheric radiocarbon for the period 1950–2019, derived from atmospheric CO2 sampling and tree rings from clean-air sites. Following the approach taken by Hua et al.
Q. Hua, J. Turnbull, G. Santos, A. Rakowski, S. Ancapichún, R. De Pol‐Holz, S. Hammer, S. Lehman, I. Levin, John B. Miller, J. Palmer, C. Turney   +11 more
semanticscholar   +1 more source

Sixty years of radiocarbon dioxide measurements at Wellington, New Zealand: 1954–2014 [PDF]

Atmospheric Chemistry and Physics, 2017
We present 60 years of Δ14CO2 measurements from Wellington, New Zealand (41° S, 175° E). The record has been extended and fully revised. New measurements have been used to evaluate the existing record and to replace original measurements where ...
J. C. Turnbull, J. C. Turnbull, S. E. Mikaloff Fletcher, I. Ansell, G. W. Brailsford, R. C. Moss, M. W. Norris, K. Steinkamp   +7 more
doaj   +1 more source

Is there any Evidence for Regional Atmospheric 14C Offsets in the Southern Hemisphere? [PDF]

, 2013
Center for Accelerator Mass Spectrometry (CAMS) Tasmanian huon pine (Lagarostrobos franklinii) decadal measurements for the interval AD 745–855 suggest a mean interhemispheric radiocarbon offset (20 ± 5 yr), which is considerably lower than the ...
Buckley, Brendan, Cook, Ed, Hogg, Alan G., Palmer, Jonathan G., Turney, Chris S.M.   +4 more
core   +6 more sources