gov.noaa.nmfs.inport:36758 eng UTF8 dataset Excel and SAS Dataset Pacific Islands Fisheries Science Center 808-725-5300 1845 Wasp Blvd. Honolulu HI 96818 USA https://www.pifsc.noaa.gov WWW:LINK-1.0-http--link Website Website for this organization information 8:00 a.m. - 4:30 p.m. resourceProvider 2026-03-04T19:17:18 ISO 19115-2 Geographic Information - Metadata Part 2 Extensions for imagery and gridded data ISO 19115-2:2009(E) Guam coral - Bomb radiocarbon record (1939-2000) Guam coral radiocarbon record 2016 publication NOAA/NMFS/EDM 36758 https://www.fisheries.noaa.gov/inport/item/36758 WWW:LINK-1.0-http--link Full Metadata Record View the complete metadata record on InPort for more information about this dataset. information documentDigital Publication: Andrews, A.H., R. Asami, Y. Iryu, D.R. Kobayashi, and F. Camacho. 2016. Bomb-produced radiocarbon in the western tropical Pacific Ocean—Guam coral reveals operation-specific signals from the Pacific Proving Grounds. Journal of Geophysical Research – Oceans 121: 6351-6366 (dx.doi.org/10.1002/2016JC012043) 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. Establish a comprehensive bomb radiocarbon reference for use in age validation of regional marine organisms and to explain the oceanographic propagation of the signal through the western Pacific Ocean. completed Schemmel, Eva M eva.schemmel@noaa.gov Contact via email. pointOfContact notPlanned DOC/NOAA/NMFS/PIFSC > Pacific Islands Fisheries Science Center, National Marine Fisheries Service, NOAA, U.S. Department of Commerce dataCentre Global Change Master Directory (GCMD) Data Center Keywords 2017-04-24 publication 8.5 Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA) https://forum.earthdata.nasa.gov/app.php/tag/GCMD%2BKeywords GCMD Keyword Forum Page Global Change Master Directory (GCMD). 2025. GCMD Keywords, Version 22. Greenbelt, MD: Earth Science Data and Information System, Earth Science Projects Division, Goddard Space Flight Center (GSFC), National Aeronautics and Space Administration (NASA). URL (GCMD Keyword Forum Page): https://forum.earthdata.nasa.gov/app.php/tag/GCMD+Keywords information custodian Life History Estimates project InPort otherRestrictions Cite As: Pacific Islands Fisheries Science Center, [Date of Access]: Guam coral - Bomb radiocarbon record (1939-2000) [Data Date Range], https://www.fisheries.noaa.gov/inport/item/36758. NOAA provides no warranty, nor accepts any liability occurring from any incomplete, incorrect, or misleading data, or from any incorrect, incomplete, or misleading use of the data. It is the responsibility of the user to determine whether or not the data is suitable for the intended purpose. otherRestrictions Access Constraints: NA otherRestrictions Use Constraints: NA unclassified NA NA NOAA Data Management Plan (DMP) NOAA/NMFS/EDM 36758 https://www.fisheries.noaa.gov/inportserve/waf/noaa/nmfs/pifsc/dmp/pdf/36758.pdf WWW:LINK-1.0-http--link NOAA Data Management Plan (DMP) NOAA Data Management Plan for this record on InPort. information crossReference eng; US oceans Guam, US Territory Validated timeline for the coral core radiocarbon record using previously published seasonal/annual temperature changes. | Currentness: Publication Date 1939 2000 false eng false Data Table GUAM_CORAL_HIGH_RES 2025-02-13 publication GUAM_CORAL_REPLICATE 2025-02-13 publication GUAM_CORAL_DATA 2025-02-13 publication Pacific Islands Fisheries Science Center 808-725-5360 1845 Wasp Blvd. Honolulu HI 96818 USA pifsc.info@noaa.gov https://www.pifsc.noaa.gov WWW:LINK-1.0-http--link Pacific Islands Fisheries Science Center Website Pacific Island Fisheries Science Center homepage information 8:00 a.m. - 4:30 p.m. distributor https://www.ncdc.noaa.gov/paleo/study/20346 WWW:LINK-1.0-http--link Guam 14C Data download dataset See publication: Andrews, A.H., R. Asami, Y. Iryu, D.R. Kobayashi, and F. Camacho. 2016. Bomb-produced radiocarbon in the western tropical Pacific Ocean—Guam coral reveals operation-specific signals from the Pacific Proving Grounds. Journal of Geophysical Research – Oceans 121: 6351-6366 (dx.doi.org/10.1002/2016JC012043) otherRestrictions otherRestrictions Access Constraints: NA | Use Constraints: NA