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Description:
Title:
Bomb-produced radiocarbon in the western tropical Pacific Ocean: Guam coral reveals operation-specific signals from the Pacific Proving Grounds
Author(s):
Andrews, Allen H.
Asami, Ryuji
Iryu, Yasufumi
Kobayashi, Donald R.
Camacho, Frank
Dates of Publication:
2016
Abstract:
High-resolution radiocarbon (14C) analyses on a coral core extracted from Guam, a western tropical Pacific island, revealed a series of early bomb-produced14C spikes. The typical marine bomb14C sig- nal—phase lagged and attenuated relative to atmospheric records—is present in the coral and is consistentwith other regional coral records. However, 14C levels well above what can be attributed to air-sea diffusion alone punctuate this pattern. This anomaly was observed in other Indo-Pacific coral records, but the Guam record is unmatched in magnitude and temporal resolution. The Guam coral D14C record provided three spikes in 1954–1955, 1956–1957, and 1958–1959 that are superimposed on a normal14C record. Relative to
Keywords:
Earth and Planetary Sciences (miscellaneous)
Geochemistry and Petrology
Geophysics
Oceanography
Space and Planetary Science
Local Corporate Name:
NMFS (National Marine Fisheries Service)
PIFSC (Pacific Islands Fisheries Science Center)
CoRIS (Coral Reef Information System)
Format:
PDF
Type of Resource:
Journal Article
Note:
High-resolution radiocarbon (14C) analyses on a coral core extracted from Guam, a western tropical Pacific island, revealed a series of early bomb-produced14C spikes. The typical marine bomb14C sig- nal—phase lagged and attenuated relative to atmospheric records—is present in the coral and is consistentwith other regional coral records. However, 14C levels well above what can be attributed to air-sea diffusion alone punctuate this pattern. This anomaly was observed in other Indo-Pacific coral records, but the Guam record is unmatched in magnitude and temporal resolution. The Guam coral D14C record provided three spikes in 1954–1955, 1956–1957, and 1958–1959 that are superimposed on a normal14C record. Relative to
Grant no. NA14NMF4270056
URL:
DOI:
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