Recent chronologies for tree rings and terrestrial archives using 14C bomb fallout history

McGee, E.J.; Gallagher, Donal; Mitchell, P.I.; Baillie, M. L.; Brown, David; Keogh, S.M.

doi:10.1016/j.gca.2003.07.020

Cited by 20 publications

(11 citation statements)

References 23 publications

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“…The large and well-documented change in the radiocarbon signature of CO 2 over the last half-century (Stuiver et al, 1998;Levin and Hesshaimer, 2000;Hua and Barbetti, 2004;Levin and Kromer, 2004;McGee et al, 2004) brought about by the above-ground detonation of nearly 500 nuclear weapons between 1945 and 1963 can then be exploited to resolve the relative contribution and ages of such temporal reservoirs.…”

Section: The Global Organic Carbon Cyclementioning

confidence: 99%

The temporal dynamics of terrestrial organic matter transfer to the oceans : initial assessment and application

Drenzek¹

2007

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Section: The Global Organic Carbon Cyclementioning

confidence: 99%

The temporal dynamics of terrestrial organic matter transfer to the oceans : initial assessment and application

Drenzek¹

2007

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“…Dans les matrices environnementales terrestres, hors de l'influence directe d'une installation nucléaire, l'activité spé-cifique du 14 C décroît depuis l'arrêt des essais nucléaires atmosphériques (Roussel-Debet, 2007). L'évolution de l'activité spécifique du 14 C atmosphérique, dans l'hémisphère nord, a été déduite de celle des cernes de bois, permettant de reconstruire les activités, a posteriori (McNamara et McCartney, 1998 ;Isogai et al, 2002 ;McGee et al, 2004) ou de mesures de diverses matrices dont l'activité spécifique était considérée en équilibre avec le CO 2 de l'atmosphère . Dans le prolongement de ces études, l'IRSN a entrepris, de 1994 à 2003, d'actualiser la mesure de ce bruit de fond à partir d'échantillons variés .…”

Section: éVolution Du Bruit De Fond Du 14 C Et Valeurs Récentes Acquiunclassified

Données utiles à l’interprétation des mesures de carbone 14 en milieu terrestre

Roussel-Debet¹

2013

Radioprotection

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Résumé -L'examen des résultats de mesure de 14 C, notamment dans le cadre de la surveillance environnementale requiert la connaissance de certaines spécificités du comportement du carbone. Les principaux paramètres susceptibles d'influer sur les mécanismes d'incorporation du carbone dans les matrices environnementales et donc sur les niveaux mesurés en 14 C sont succinctement rappelés. Des résultats de mesure d'échantillons biologiques ont été acquis par l'IRSN dans des zones non directement influencées par des rejets d'installations nucléaires ; ces chroniques permettent de présenter les valeurs du bruit de fond naturel et rémanent, exprimé en activité spécifique (Bq 14 C/kg C), hors de l'influence contemporaine d'un rejet local de 14 C. Abstract -Useful data for interpreting carbon-14 measurements in the terrestrial environment.Understanding the results of measurements of 14 C, in particular for environmental monitoring, involves identifying some specifics of the behavior of this element. The main parameters influencing the mechanisms of incorporation of carbon in the environmental matrices and thus the measured levels of 14 C are briefly reviewed. Data were acquired by the IRSN for biological samples, in zones not directly influenced by the atmospheric releases of nuclear facilities; this information allows us to present the values of the natural and artificial background, expressed as specific activity (Bq 14 C /kg C), not including the influence of a local release of 14 C.

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“…Turnover time of human or animal tissues is dependent on the type of tissue involved and may be affected by age or health of the organism (Geyh, 2001;Harkness and Walton, 1972;Lovell et al, 2002;Stenhouse and Baxter, 1977). Proximity to discharge from nuclear reactors or medical waste incinerators can introduce additional pulses of 14 C, which may not be observed in the regional or zonal calibration datasets (Cook et al, 1995;Trumbore et al, 2002) although atmospheric mixing may be rapid enough in some cases to dilute a pulse beyond detection (McGee et al, 2004).…”

Section: Datamentioning

confidence: 99%

Discussion: Reporting and Calibration of Post-Bomb ¹⁴C Data

2004

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The definitive paper by Stuiver and Polach (1977) established the conventions for reporting of radiocarbon data for chronological and geophysical studies based on the radioactive decay of 14C in the sample since the year of sample death or formation. Several ways of reporting 14C activity levels relative to a standard were also established, but no specific instructions were given for reporting nuclear weapons-testing (post-bomb) 14C levels in samples. Because the use of post-bomb 14C is becoming more prevalent in forensics, biology, and geosciences, a convention needs to be adopted. We advocate the use of fraction modern with a new symbol F14C to prevent confusion with the previously used Fm, which may or may not have been fractionation-corrected. We also discuss the calibration of post-bomb 14C samples and the available data sets and compilations, but do not give a recommendation for a particular data set.

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Recent chronologies for tree rings and terrestrial archives using 14C bomb fallout history

Cited by 20 publications

References 23 publications

The temporal dynamics of terrestrial organic matter transfer to the oceans : initial assessment and application

The temporal dynamics of terrestrial organic matter transfer to the oceans : initial assessment and application

Données utiles à l’interprétation des mesures de carbone 14 en milieu terrestre

Discussion: Reporting and Calibration of Post-Bomb ¹⁴C Data

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Recent chronologies for tree rings and terrestrial archives using 14C bomb fallout history

Cited by 20 publications

References 23 publications

The temporal dynamics of terrestrial organic matter transfer to the oceans : initial assessment and application

The temporal dynamics of terrestrial organic matter transfer to the oceans : initial assessment and application

Données utiles à l’interprétation des mesures de carbone 14 en milieu terrestre

Discussion: Reporting and Calibration of Post-Bomb 14C Data

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Discussion: Reporting and Calibration of Post-Bomb ¹⁴C Data