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Kure coral - Bomb radiocarbon record (1939-2002)
Corals of the Hawaiian Archipelago are well situated in the North Pacific Gyre (NPG) to record how bomb-produced radiocarbon (14C) has been sequestered and transported by the sea. While this signal can be traced accurately through time in reef-building corals and used to infer oceanographic processes and determine the ages of marine organisms, a comprehensive and validated record has been lacking for the Hawaiian Archipelago. In this study, a coral core from Kure Atoll in the Northwestern Hawaiian Islands was used to create a high-resolution bomb 14C record for the years 1939–2002, and was then used with other 14C measurements in fish otoliths and seawater to explore differences and similarities in the bomb 14C signal throughout the Hawaiian Archipelago. The Kure Atoll sample series produced a well-defined bomb 14C curve that, with some exceptions, was similar to other coral 14C records from the Hawaiian Archipelago. Subtle differences in the coral 14C records across the region may be explained by the large-scale ocean circulation patterns and decadal cycles of the NPG. The most rapid increase of 14C, in the 1950s and 1960s, showed similar timing across the Hawaiian Archipelago and provides a robust basis for use of bomb 14C dating to obtain high precision age determinations of marine organisms. Reference otoliths of juvenile fish demonstrated the use of the post-peak 14C decline period as a viable reference in the age validation of younger and more recently collected fishes, and effectively extended the utility of bomb 14C dating to the latest 30 years.
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Guam coral - Bomb radiocarbon record (1939-2000)
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High-resolution radiocarbon (14C) analyses on a coral core extracted from Guam, a western tropical Pacific island, revealed a series of early bomb-produced 14C spikes. The typical marine bomb 14C signal—phase lagged and attenuated relative to atmospheric records—is present in the coral and is consistent with 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 ¿14C record provided three spikes in 1954–55, 1956–57, and 1958–59 that are superimposed on a normal 14C record. Relative to mean pre-bomb levels, the first peak rises an incredible ~700‰ and remained elevated for ~1.2 years. A follow up assay with finer resolution increased the peak by ~300‰. Subsequent spikes were less intense with a rise of ~35‰ and ~70‰. Each can be linked to thermonuclear testing in the Pacific Proving Grounds at Bikini and Enewetak atolls in Operations Castle (1954), Redwing (1956), and Hardtack I (1958). These 14C signals can be explained by vaporization of coral reef material in the nuclear fireball, coupled with neutron activation of atmospheric nitrogen (14C production), and subsequent absorption of 14CO2 to form particulate carbonates of close-in fallout. The lag time in reaching Guam and other coral records abroad was tied to ocean surface currents and modeling provided validation of 14C arrival observations.
NOAA/WDS Paleoclimatology - Double Reef, Guam 60 Year Coral Bomb-Produced Radiocarbon Data
공공데이터포털
This archived Paleoclimatology Study is available from the NOAA National Centers for Environmental Information (NCEI), under the World Data Service (WDS) for Paleoclimatology. The associated NCEI study type is Coral. The data include parameters of corals and sclerosponges with a geographic location of Guam, Central Pacific Ocean. The time period coverage is from 11 to -50 in calendar years before present (BP). See metadata information for parameter and study location details. Please cite this study when using the data.
NOAA/WDS Paleoclimatology - Big Island of Hawai'i Surface Water Radiocarbon Data from 1947-1992 CE
공공데이터포털
This archived Paleoclimatology Study is available from the NOAA National Centers for Environmental Information (NCEI), under the World Data Service (WDS) for Paleoclimatology. The associated NCEI study type is Coral. The data include parameters of corals and sclerosponges with a geographic location of Hawaiian Islands, Central Pacific Ocean. The time period coverage is from 3 to -42 in calendar years before present (BP). See metadata information for parameter and study location details. Please cite this study when using the data.
NOAA/WDS Paleoclimatology - Kure Atoll, Hawaiian Archipelago Radiocarbon Data from 1939-2002 AD
공공데이터포털
This archived Paleoclimatology Study is available from the NOAA National Centers for Environmental Information (NCEI), under the World Data Service (WDS) for Paleoclimatology. The associated NCEI study type is Coral. The data include parameters of corals and sclerosponges with a geographic location of Hawaiian Islands, Central Pacific Ocean. The time period coverage is from 11 to -52 in calendar years before present (BP). See metadata information for parameter and study location details. Please cite this study when using the data.
NOAA/WDS Paleoclimatology - Palawan Island, South China Sea Coral Radiocarbon Data from 1947-1981 CE
공공데이터포털
This archived Paleoclimatology Study is available from the NOAA National Centers for Environmental Information (NCEI), under the World Data Service (WDS) for Paleoclimatology. The associated NCEI study type is Coral. The data include parameters of corals and sclerosponges with a geographic location of South China Sea, Western Pacific Ocean. The time period coverage is from 3 to -31 in calendar years before present (BP). See metadata information for parameter and study location details. Please cite this study when using the data.
NOAA/WDS Paleoclimatology - Vietnam Coral Radiocarbon Data from 1571-1950 CE
공공데이터포털
This archived Paleoclimatology Study is available from the NOAA National Centers for Environmental Information (NCEI), under the World Data Service (WDS) for Paleoclimatology. The associated NCEI study type is Coral. The data include parameters of corals and sclerosponges with a geographic location of Vietnam, Southeastern Asia. The time period coverage is from 379 to 0 in calendar years before present (BP). See metadata information for parameter and study location details. Please cite this study when using the data.
NOAA/WDS Paleoclimatology - Kiritimati Island 120 Year Modern and Fossil Coral Oxygen Isotope Data
공공데이터포털
This archived Paleoclimatology Study is available from the NOAA National Centers for Environmental Information (NCEI), under the World Data Service (WDS) for Paleoclimatology. The associated NCEI study type is Coral. The data include parameters of corals and sclerosponges with a geographic location of Kiribati, Central Pacific Ocean. The time period coverage is from 59 to -56 in calendar years before present (BP). See metadata information for parameter and study location details. Please cite this study when using the data.
NOAA/WDS Paleoclimatology - Subtropical and Tropical Atlantic Ocean Coral Radiocarbon Records from 1876-2005 CE
공공데이터포털
This archived Paleoclimatology Study is available from the NOAA National Centers for Environmental Information (NCEI), under the World Data Service (WDS) for Paleoclimatology. The associated NCEI study type is Coral. The data include parameters of corals and sclerosponges with a geographic location of Gulf Of Mexico, North Atlantic Ocean. The time period coverage is from 74 to -55 in calendar years before present (BP). See metadata information for parameter and study location details. Please cite this study when using the data.
NOAA/WDS Paleoclimatology - Yongxing Island, northern South China Sea Coral d13C Data 1851-2007 CE
공공데이터포털
This archived Paleoclimatology Study is available from the NOAA National Centers for Environmental Information (NCEI), under the World Data Service (WDS) for Paleoclimatology. The associated NCEI study type is Coral. The data include parameters of corals and sclerosponges with a geographic location of South China And Eastern Archipelagic Seas, Western Pacific Ocean. The time period coverage is from 99 to -57 in calendar years before present (BP). See metadata information for parameter and study location details. Please cite this study when using the data.
NOAA/WDS Paleoclimatology - Yongxing Island, northern South China Sea coral d18O Data 1851-2008 CE
공공데이터포털
This archived Paleoclimatology Study is available from the NOAA National Centers for Environmental Information (NCEI), under the World Data Service (WDS) for Paleoclimatology. The associated NCEI study type is Coral. The data include parameters of corals and sclerosponges with a geographic location of South China And Eastern Archipelagic Seas, Western Pacific Ocean. The time period coverage is from 99 to -57 in calendar years before present (BP). See metadata information for parameter and study location details. Please cite this study when using the data.
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