gov.noaa.nmfs.inport:21678 eng UTF8 dataset Alaska Fisheries Science Center 7600 Sand Point Way N.E., Building 4 Seattle WA 98115 USA https://www.afsc.noaa.gov WWW:LINK-1.0-http--link Website Website for this organization information 0700-1700 Pacific Time 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) AFSC/REFM: Bomb-produced age validation study AFSC/REFM: Bomb-produced age validation study 2015-10 publication NOAA/NMFS/EDM 21678 https://www.fisheries.noaa.gov/inport/item/21678 WWW:LINK-1.0-http--link Full Metadata Record View the complete metadata record on InPort for more information about this dataset. information Kastelle, Craig craig.kastelle@noaa.gov originator Alaska Fisheries Science Center (206) 526-4000 (206) 526-4004 7600 Sand Point Way N.E., Building 4 Seattle WA 98115 USA afsc.webmaster@noaa.gov https://www.fisheries.noaa.gov/about/alaska-fisheries-science-center WWW:LINK-1.0-http--link Alaska Fisheries Science Center Website AKFSC Home Page information 0700-1700 Pacific Time originator https://data.nodc.noaa.gov/cgi-bin/iso?id=gov.noaa.nodc:0134853 WWW:LINK-1.0-http--link Citation URL Online Resource download tableDigital Fish age validation with bomb-produced radiocarbon (14C) requires a known-age Delta14C reference chronology spanning the era of a marine increase in bomb-produced 14C (1950s to 1960s). Concordance between otolith Delta14C in a validation sample and the reference chronology indicates accurate test ages. Here we compare a new Delta14C reference chronology from the eastern Bering Sea and a previously established reference from the Gulf of Alaska with otolith Delta14C in two validation species, eastern Bering Sea yellowfin sole (Limanda aspera) and Gulf of Alaska northern rockfish (Sebastes polyspinis). Our goals were twofold: to validate the age determination methods for northern rockfish and yellowfin sole using comparisons within oceanic basins, and to explore the outcome of making naive comparisons of these validation data sets to reference chronologies across oceanic basins. We present a information-theoretic approach to hypothesis testing and use Bayesian data analysis with Markov Chain Monte Carlo simulation as a probabilistic framework to quantitatively estimate age determination bias and its uncertainty. Based on within-basin comparisons we concluded that estimated ages for eastern Bering Sea yellowfin sole and Gulf of Alaska northern rockfish were accurate. We further concluded that there were important differences in otolith 14C uptake between fish from the two ocean basins. The purpose of this data set is to use bomb-produced 14C to confirm the accuracy of northern rockfish and yellowfin sole ages estimated from otolith growth-zones. The samples used in this study were collected by the Research Assessment and Conservation Engineering Division (RACE) on survey cruises or by the Fisheries Monitoring and Analysis Division (FMA) on commercial fishing boats underDevelopment Kastelle, Craig craig.kastelle@noaa.gov pointOfContact Kastelle, Craig craig.kastelle@noaa.gov custodian asNeeded Bayesian data analysis Bomb-produced 14C Markov Chain Monte Carlo simultion age validation break-and-burn age fish age determination otolith otolith growth zone reference chronology theme Bering Sea Gulf of Alaska place DOC/NOAA/NMFS/AFSC > Alaska 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 project InPort otherRestrictions Cite As: Alaska Fisheries Science Center, [Date of Access]: AFSC/REFM: Bomb-produced age validation study [Data Date Range], https://www.fisheries.noaa.gov/inport/item/21678. 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: There are no legal restrictions on access to the data. They reside in public domain and can be freely distributed. otherRestrictions Use Constraints: User must read and fully comprehend the metadata prior to use. Applications or inferences derived from the data should be carefully considered for accuracy. Acknowledgement of NOAA/NMFS/AFSC, as the source from which these data were obtained in any publications and/or other representations of these, data is suggested. unclassified NOAA Data Management Plan (DMP) NOAA/NMFS/EDM 21678 https://www.fisheries.noaa.gov/inportserve/waf/noaa/nmfs/afsc/dmp/pdf/21678.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 biota oceans Excel -180 -150 52 60 Gulf of Alaska | Currentness: Ground Condition 1987 2004 false eng false csv file 2016-04-28 publication 2nd csv file 2016-04-28 publication NOAA National Centers for Environmental Information ncei.info@noaa.gov https://www.ncei.noaa.gov/contact WWW:LINK-1.0-http--link NCEI Contact Information Information for contacts at NCEI. information distributor https://data.nodc.noaa.gov/cgi-bin/iso?id=gov.noaa.nodc:0134853 WWW:LINK-1.0-http--link https://data.nodc.noaa.gov/cgi-bin/iso?id=gov.noaa.nodc:0134853 download dataset Accuracy Data from RACE is proofed by normal protocols routinely used on survey data. Data generated by the Age and Growth program data (age estimates and associated codes) is proofed for typing errors, tested for precision with a 20% replicate, and accuracy is evaluated in comparisons of fish size vs. age. The Final ages were evaluated for error by the Age (confirmation by reader A or L). Radiocarbon values are checked for accuracy by comparing two different sets of calculations, one by WOHI, NAOAMS, and one by Craig Kastelle at AFSC. Completeness Report There were no samples from 1997 to 2003. Conceptual Consistency spot checked See methods in FGDC metadata.