Continuous Plutonium measurements from an array of Arctic and Antarctic ice cores
Atmospheric nuclear weapons testing (NWT) resulted in the injection of plutonium (Pu) into the atmosphere and subsequent global deposition. We present a new method for continuous semi-quantitative measurement of 239Pu in ice cores, which was used to develop annual records of fallout from NWT in ten...
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2016
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dataone:urn:uuid:4266cad5-1663-4b44-a697-659fe9409f3c 2024-06-03T18:46:23+00:00 Continuous Plutonium measurements from an array of Arctic and Antarctic ice cores Monica Arienzo Four Arctic and six Antarctic ice cores were analyzed for semi-quantitative 239Pu concentrations (Table 1, Figure 1). All ten cores previously had been dated using annual layer counting of multiple seasonal chemical cycles in the ice, and the dating was constrained with volcanic synchronization. ENVELOPE(-43.9,-43.9,71.4,71.4) BEGINDATE: 1941-01-01T00:00:00Z ENDDATE: 1985-01-01T00:00:00Z 2016-06-10T00:00:00Z https://search.dataone.org/view/urn:uuid:4266cad5-1663-4b44-a697-659fe9409f3c unknown Arctic Data Center ANS Dataset 2016 dataone:urn:node:ARCTIC 2024-06-03T18:08:23Z Atmospheric nuclear weapons testing (NWT) resulted in the injection of plutonium (Pu) into the atmosphere and subsequent global deposition. We present a new method for continuous semi-quantitative measurement of 239Pu in ice cores, which was used to develop annual records of fallout from NWT in ten ice cores from Greenland and Antarctica. The 239Pu was measured directly using an Inductively Coupled Plasma - Sector Field Mass Spectrometer, thereby reducing analysis time and increasing depth-resolution with respect to previous methods. To validate this method, we compared our one year averaged results to published 239Pu records and other records of NWT. The 239Pu profiles from four Arctic ice cores reflected global trends in NWT and were in agreement with discrete Pu profiles from lower latitude ice cores. The 239Pu measurements in the Antarctic ice cores tracked low latitude NWT, consistent with previously published discrete records from Antarctica. Advantages of the continuous 239Pu measurement method are (1) reduced sample preparation and analysis time; (2) no requirement for additional ice samples for NWT fallout determinations; (3) measurements are exactly co-registered with all other chemical, elemental, isotopic, and gas measurements from the continuous analytical system; and (4) the long half-life means the 239Pu record is stable through time. Dataset Antarc* Antarctic Antarctica Arctic Greenland Arctic Data Center (via DataONE) Antarctic Arctic Greenland The Antarctic ENVELOPE(-43.9,-43.9,71.4,71.4) |
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ANS Monica Arienzo Continuous Plutonium measurements from an array of Arctic and Antarctic ice cores |
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description |
Atmospheric nuclear weapons testing (NWT) resulted in the injection of plutonium (Pu) into the atmosphere and subsequent global deposition. We present a new method for continuous semi-quantitative measurement of 239Pu in ice cores, which was used to develop annual records of fallout from NWT in ten ice cores from Greenland and Antarctica. The 239Pu was measured directly using an Inductively Coupled Plasma - Sector Field Mass Spectrometer, thereby reducing analysis time and increasing depth-resolution with respect to previous methods. To validate this method, we compared our one year averaged results to published 239Pu records and other records of NWT. The 239Pu profiles from four Arctic ice cores reflected global trends in NWT and were in agreement with discrete Pu profiles from lower latitude ice cores. The 239Pu measurements in the Antarctic ice cores tracked low latitude NWT, consistent with previously published discrete records from Antarctica. Advantages of the continuous 239Pu measurement method are (1) reduced sample preparation and analysis time; (2) no requirement for additional ice samples for NWT fallout determinations; (3) measurements are exactly co-registered with all other chemical, elemental, isotopic, and gas measurements from the continuous analytical system; and (4) the long half-life means the 239Pu record is stable through time. |
format |
Dataset |
author |
Monica Arienzo |
author_facet |
Monica Arienzo |
author_sort |
Monica Arienzo |
title |
Continuous Plutonium measurements from an array of Arctic and Antarctic ice cores |
title_short |
Continuous Plutonium measurements from an array of Arctic and Antarctic ice cores |
title_full |
Continuous Plutonium measurements from an array of Arctic and Antarctic ice cores |
title_fullStr |
Continuous Plutonium measurements from an array of Arctic and Antarctic ice cores |
title_full_unstemmed |
Continuous Plutonium measurements from an array of Arctic and Antarctic ice cores |
title_sort |
continuous plutonium measurements from an array of arctic and antarctic ice cores |
publisher |
Arctic Data Center |
publishDate |
2016 |
url |
https://search.dataone.org/view/urn:uuid:4266cad5-1663-4b44-a697-659fe9409f3c |
op_coverage |
Four Arctic and six Antarctic ice cores were analyzed for semi-quantitative 239Pu concentrations (Table 1, Figure 1). All ten cores previously had been dated using annual layer counting of multiple seasonal chemical cycles in the ice, and the dating was constrained with volcanic synchronization. ENVELOPE(-43.9,-43.9,71.4,71.4) BEGINDATE: 1941-01-01T00:00:00Z ENDDATE: 1985-01-01T00:00:00Z |
long_lat |
ENVELOPE(-43.9,-43.9,71.4,71.4) |
geographic |
Antarctic Arctic Greenland The Antarctic |
geographic_facet |
Antarctic Arctic Greenland The Antarctic |
genre |
Antarc* Antarctic Antarctica Arctic Greenland |
genre_facet |
Antarc* Antarctic Antarctica Arctic Greenland |
_version_ |
1800870840785436672 |