A TIME HISTORY OF PRE- AND POST-BOMB RADIOCARBON IN THE BARENTS SEA DERIVED FROM ARCTO-NORWEGIAN COD OTOLITHS
ABSTRACT. Radiocarbon measured in seawater dissolved inorganic carbon (DIC) can be used to investigate ocean circu-lation, atmosphere/ocean carbon flux, and provide powerful constraints for the fine-tuning of general circulation models (GCMs). Time series of 14C in seawater are derived most frequent...
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ftciteseerx:oai:CiteSeerX.psu:10.1.1.624.7836 2023-05-15T15:38:37+02:00 A TIME HISTORY OF PRE- AND POST-BOMB RADIOCARBON IN THE BARENTS SEA DERIVED FROM ARCTO-NORWEGIAN COD OTOLITHS John M Kalish The Pennsylvania State University CiteSeerX Archives application/pdf http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.624.7836 http://www.imr.no/filarkiv/2004/03/Radiokarbon_fra_atomtester_i_otolitter_hos_norsk-arktisk_torsk.pdf/nb-no/ en eng http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.624.7836 http://www.imr.no/filarkiv/2004/03/Radiokarbon_fra_atomtester_i_otolitter_hos_norsk-arktisk_torsk.pdf/nb-no/ Metadata may be used without restrictions as long as the oai identifier remains attached to it. http://www.imr.no/filarkiv/2004/03/Radiokarbon_fra_atomtester_i_otolitter_hos_norsk-arktisk_torsk.pdf/nb-no/ text ftciteseerx 2016-01-08T15:10:20Z ABSTRACT. Radiocarbon measured in seawater dissolved inorganic carbon (DIC) can be used to investigate ocean circu-lation, atmosphere/ocean carbon flux, and provide powerful constraints for the fine-tuning of general circulation models (GCMs). Time series of 14C in seawater are derived most frequently from annual bands of hermatypic corals. However, this proxy is unavailable in temperate and polar oceans. Fish otoliths, calcium carbonate auditory, and gravity receptors in the membranous labyrinths of teleost fishes, can act as proxies for 14C in most oceans and at most depths. Arcto-Norwegian cod otoliths are suited to this application due to the well-defined distribution of this species in the Barents Sea, the ability to deter-mine ages of individual Arcto-Norwegian cod with a high level of accuracy, and the availability of archived otoliths collected for fisheries research over the past 60 years. Using measurements of 14C derived from Arcto-Norwegian cod otoliths, we present the first pre- and post-bomb time series (1919–1992) of 14C from polar seas and consider the significance of these data in relation to ocean circulation and atmosphere/ocean flux of 14C. The data provide evidence for a minor Suess effect of only 0.2 ‰ per year between 1919 and 1950. Bomb 14C was evident in the Barents Sea as early as 1957 and the highest 14C value was measured in an otolith core from a cod with a birth date of 1967. The otolith 14C data display key features common to records of 14C obtained from a Georges Bank mollusc and corals from the tropical and subtropical North Atlantic. Text Barents Sea North Atlantic Unknown Barents Sea |
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Open Polar |
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Unknown |
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ftciteseerx |
language |
English |
description |
ABSTRACT. Radiocarbon measured in seawater dissolved inorganic carbon (DIC) can be used to investigate ocean circu-lation, atmosphere/ocean carbon flux, and provide powerful constraints for the fine-tuning of general circulation models (GCMs). Time series of 14C in seawater are derived most frequently from annual bands of hermatypic corals. However, this proxy is unavailable in temperate and polar oceans. Fish otoliths, calcium carbonate auditory, and gravity receptors in the membranous labyrinths of teleost fishes, can act as proxies for 14C in most oceans and at most depths. Arcto-Norwegian cod otoliths are suited to this application due to the well-defined distribution of this species in the Barents Sea, the ability to deter-mine ages of individual Arcto-Norwegian cod with a high level of accuracy, and the availability of archived otoliths collected for fisheries research over the past 60 years. Using measurements of 14C derived from Arcto-Norwegian cod otoliths, we present the first pre- and post-bomb time series (1919–1992) of 14C from polar seas and consider the significance of these data in relation to ocean circulation and atmosphere/ocean flux of 14C. The data provide evidence for a minor Suess effect of only 0.2 ‰ per year between 1919 and 1950. Bomb 14C was evident in the Barents Sea as early as 1957 and the highest 14C value was measured in an otolith core from a cod with a birth date of 1967. The otolith 14C data display key features common to records of 14C obtained from a Georges Bank mollusc and corals from the tropical and subtropical North Atlantic. |
author2 |
The Pennsylvania State University CiteSeerX Archives |
format |
Text |
author |
John M Kalish |
spellingShingle |
John M Kalish A TIME HISTORY OF PRE- AND POST-BOMB RADIOCARBON IN THE BARENTS SEA DERIVED FROM ARCTO-NORWEGIAN COD OTOLITHS |
author_facet |
John M Kalish |
author_sort |
John M Kalish |
title |
A TIME HISTORY OF PRE- AND POST-BOMB RADIOCARBON IN THE BARENTS SEA DERIVED FROM ARCTO-NORWEGIAN COD OTOLITHS |
title_short |
A TIME HISTORY OF PRE- AND POST-BOMB RADIOCARBON IN THE BARENTS SEA DERIVED FROM ARCTO-NORWEGIAN COD OTOLITHS |
title_full |
A TIME HISTORY OF PRE- AND POST-BOMB RADIOCARBON IN THE BARENTS SEA DERIVED FROM ARCTO-NORWEGIAN COD OTOLITHS |
title_fullStr |
A TIME HISTORY OF PRE- AND POST-BOMB RADIOCARBON IN THE BARENTS SEA DERIVED FROM ARCTO-NORWEGIAN COD OTOLITHS |
title_full_unstemmed |
A TIME HISTORY OF PRE- AND POST-BOMB RADIOCARBON IN THE BARENTS SEA DERIVED FROM ARCTO-NORWEGIAN COD OTOLITHS |
title_sort |
time history of pre- and post-bomb radiocarbon in the barents sea derived from arcto-norwegian cod otoliths |
url |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.624.7836 http://www.imr.no/filarkiv/2004/03/Radiokarbon_fra_atomtester_i_otolitter_hos_norsk-arktisk_torsk.pdf/nb-no/ |
geographic |
Barents Sea |
geographic_facet |
Barents Sea |
genre |
Barents Sea North Atlantic |
genre_facet |
Barents Sea North Atlantic |
op_source |
http://www.imr.no/filarkiv/2004/03/Radiokarbon_fra_atomtester_i_otolitter_hos_norsk-arktisk_torsk.pdf/nb-no/ |
op_relation |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.624.7836 http://www.imr.no/filarkiv/2004/03/Radiokarbon_fra_atomtester_i_otolitter_hos_norsk-arktisk_torsk.pdf/nb-no/ |
op_rights |
Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
_version_ |
1766369769929310208 |