noaa-ocean-13180 eng; USA utf8 dataset Bauer, Bruce DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce +1 303-497-6280 +1 303-497-6513 325 Broadway, E/CC23 Boulder CO 80305-3328 USA paleo@noaa.gov pointOfContact 2018-12-11 ISO 19115-2 Geographic Information - Metadata - Part 2: Extensions for Imagery and Gridded Data ISO 19115-2:2009(E) NOAA/WDS Paleoclimatology - Gulf of Alaska 17,000 Year Paleoproductivity Data 2012-08-01 publication noaa-ocean-13180 NCEI DSI 1200_01 Addison, J.A. originator Addison, J.A. author Finney, B.P. originator Finney, B.P. author Dean, W.E. originator Dean, W.E. author Davies, M.H. originator Davies, M.H. author Mix, A.C. originator Mix, A.C. author Stoner, J.S. originator Stoner, J.S. author Jaeger, J.M. originator Jaeger, J.M. author NOAA National Centers for Environmental Information publisher tableDigital 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 Paleoceanography. The data include parameters of paleoceanography with a geographic location of Gulf Of Alaska, North Pacific Ocean. The time period coverage is from 17394 to 1085 in calendar years before present (BP). See metadata information for parameter and study location details. Please cite this study when using the data. Records of past climate and ocean circulation derived from marine sediments. Parameter keywords describe what was measured in this dataset. Additional summary information can be found in the abstracts of papers listed in the dataset citations. completed Bauer, Bruce DOC/NOAA/NESDIS/NCEI > National Centers for Environmental Information, NESDIS, NOAA, U.S. Department of Commerce +1 303-497-6280 +1 303-497-6513 325 Broadway, E/CC23 Boulder CO 80305-3328 USA paleo@noaa.gov pointOfContact https://www.ncdc.noaa.gov/c/images/pc-default-ocean.png Paleoclimatology - Paleoceanography PNG Earth Science > Paleoclimate > Ocean/Lake Records Earth Science > Climate Indicators > Paleoclimate Indicators > Ocean/Lake Records theme Global Change Master Directory (GCMD) Science Keywords 2018 revision Version 8.6 Global Change Data Center, Science and Exploration Directorate, Goddard Space Flight Center (GSFC) National Aeronautics and Space Administration (NASA) https://earthdata.nasa.gov/about/gcmd/global-change-master-directory-gcmd-keywords HTTPS Web Browser Global Change Master Directory (GCMD) Keywords The information provided on this page seeks to define how the GCMD Keywords are structured, used and accessed. It also provides information on how users can participate in the further development of the keywords. information publisher earth science > paleoclimate > paleoceanography earth science > paleoclimate > paleoceanography earth science > paleoclimate > paleoceanography earth science > paleoclimate > paleoceanography earth science > paleoclimate > paleoceanography earth science > paleoclimate > paleoceanography earth science > paleoclimate > paleoceanography earth science > paleoclimate > paleoceanography earth science > paleoclimate > paleoceanography earth science > paleoclimate > paleoceanography earth science > paleoclimate > paleoceanography earth science > paleoclimate > paleoceanography earth science > paleoclimate > paleoceanography earth science > paleoclimate > paleoceanography earth science > paleoclimate > paleoceanography earth science > paleoclimate > paleoceanography earth science > paleoclimate > paleocean > geochemistry earth science > paleoclimate > paleocean > carbon isotopes earth science > paleoclimate > paleocean > nitrogen isotopes theme Global Change Master Directory (GCMD) Science Keywords 2018 revision Version 8.6 Global Change Data Center, Science and Exploration Directorate, Goddard Space Flight Center (GSFC) National Aeronautics and Space Administration (NASA) https://earthdata.nasa.gov/about/gcmd/global-change-master-directory-gcmd-keywords HTTPS Web Browser Global Change Master Directory (GCMD) Keywords The information provided on this page seeks to define how the GCMD Keywords are structured, used and accessed. It also provides information on how users can participate in the further development of the keywords. information publisher Younger Dryas theme Ocean > Pacific Ocean > North Pacific Ocean > Gulf Of Alaska> EW0408-85JC > LATITUDE 59.555 > LONGITUDE -144.1535 place otherRestrictions Cite as: Addison, J.A.; Finney, B.P.; Dean, W.E.; Davies, M.H.; Mix, A.C.; Stoner, J.S.; Jaeger, J.M. (2012-08-01): NOAA/WDS Paleoclimatology - Gulf of Alaska 17,000 Year Paleoproductivity Data. [indicate subset used]. NOAA National Centers for Environmental Information. https://www.ncdc.noaa.gov/paleo/study/13180. Accessed [date]. otherRestrictions Distribution liability: NOAA and NCEI make no warranty, expressed or implied, regarding these data, nor does the fact of distribution constitute such a warranty. NOAA and NCEI cannot assume liability for any damages caused by any errors or omissions in these data. If appropriate, NCEI can only certify that the data it distributes are an authentic copy of the records that were accepted for inclusion in the NCEI archives. otherRestrictions Use liability: NOAA and NCEI cannot provide any warranty as to the accuracy, reliability, or completeness of furnished data. Users assume responsibility to determine the usability of these data. The user is responsible for the results of any application of this data for other than its intended purpose. otherRestrictions None otherRestrictions Please cite original publication, online resource, dataset and publication DOIs (where available), and date accessed when using downloaded data. If there is no publication information, please cite investigator, title, online resource, and date accessed. The appearance of external links associated with a dataset does not constitute endorsement by the Department of Commerce/National Oceanic and Atmospheric Administration of external Web sites or the information, products or services contained therein. For other than authorized activities, the Department of Commerce/NOAA does not exercise any editorial control over the information you may find at these locations. These links are provided consistent with the stated purpose of this Department of Commerce/NOAA Web site. eng; USA geoscientificInformation Date Range: 17394 cal yr BP to 1085 cal yr BP; -144.1535 -144.1535 59.555 59.555 Study Coordinates 59.555 -144.1535 -15444 865 STUDY NOTES: Multiproxy sediment paleoproductivity data from a jumbo piston core collected on the northern Gulf of Alaska continental slope. Proxy data measured include biogenic opal, organic carbon, organic matter stable isotopes, and trace metal data. These organic and inorganic geochemical data are from the northern continental slope of the Gulf of Alaska, and span from 1.1 to 17.4 calibrated kyrs ago. This marine sediment record is continuous and well-dated by 37 AMS radiocarbon dates on planktonic foraminifera (see Davies et al., 2011 for further information). Opal was measured by a 0.1 M NaCO3 extraction and a molybdate-blue spectrophotometric method (Mortlock and Froehlich, 1989). Total organic carbon (TOC) and total nitrogen (TN) were measured on a carbonate-free subsample by combustion in a Costech 4010 HCNS elemental analyzer. Organic matter d13C and sedimentary d15N were measured on a carbonate-free subsample using a Finnigan Delta-plus XP isotope ratio mass spectrometer. CaCO3 data is a combination of total Ca measured by ICP-OES (n = 110), calibrated with a smaller number of CaCO3 coulometric measurements (n = 43). Inorganic element concentrations (Al, Mn, Co, Cr, U, Mo, and Cd) were measured by a combination of ICP-OES and ICP-MS at SGS Minerals Services in Toronto, Canada. A terrestrial-N-corrected dataset of sedimentary d15N is also included. This data reflects the application of a linear endmember mixing model between terrestrial and marine organic matter to remove the influence of terrestrial N from the bulk sedimentary d15N measurements. These data should be considered on a qualitative basis only. Please see Addison et al. (2012) or contact the author directly for further information. Core EW0408-85JC: 59°33.3'N, 144°9.21'W, 682 m water depth ABSTRACT SUPPLIED BY ORIGINATOR: Biogenic opal, organic carbon, organic matter stable isotope, and trace metal data from a well-dated, high-resolution jumbo piston core (EW0408-85JC; 59°33.3'N, 144°9.21'W, 682 m water depth) recovered from the northern Gulf of Alaska continental slope reveal changes in productivity and nutrient utilization over the last 17,000 years. Maximum values of opal concentration (~10%) occur during the deglacial Bølling-Allerød (B-A) interval and earliest Holocene (11.2 to 10.8 cal ka BP), moderate values (~6%) occur during the Younger Dryas (13.0 to 11.2 cal ka BP) and Holocene, and minimum values (~3.5%) occur during the Late Glacial Interval (LGI). When converted to opal mass accumulation rates, the highest values (~5000 g cm-2 kyr-1) occur during the LGI prior to 16.7 cal ka BP, which points to a strong influence by LGI glaciomarine sedimentation regimes. Similar patterns are also observed in total organic carbon and cadmium paleoproductivity proxies. Mid-Holocene peaks in the terrestrial organic matter fraction at 5.5, 4.7, 3.5, and 1.2 cal ka BP indicate periods of enhanced delivery of glaciomarine sediments by the Alaska Coastal Current. The B-A and earliest Holocene intervals are laminated, and enrichments of redox-sensitive elements suggest dysoxic-to-anoxic conditions in the water column. The laminations are also associated with mildly enriched sedimentary d15N ratios, indicating a link between productivity, nitrogen cycle dynamics, and sedimentary anoxia. After applying a correction for terrestrial d15N contributions based on end-member mixing models of terrestrial and marine organic matter, the resulting B-A marine d15N (6.3 ± 0.4 ‰) ratios are consistent with either mild denitrification, or increased nitrate utilization. These findings can be explained by increased micronutrient (Fe) availability during episodes of rapid rising sea level that released iron from the previously subaerial coastal plain; iron input from enhanced terrestrial runoff; and/or the intermittent presence of seasonal sea ice resulting from altered ocean/atmospheric circulation during the B-A in the Gulf of Alaska. 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Native Format(s) https://data.nodc.noaa.gov/cgi-bin/iso?id=noaa-ocean-13180 HTTPS Landing Page NCEI landing page for this dataset Dataset landing page with general information and links to access the data. information https://www.ncdc.noaa.gov/paleo/study/13180 HTTPS Web Browser NCEI Study Page Study page with dataset access information. search https://www.ncdc.noaa.gov/data-access/paleoclimatology-data/datasets/paleoceanography HTTPS Information NCEI Paleoceanography Page General information for this data type. information https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/addison2012/addison2012.xls HTTPS Download /contributions_by_author/addison2012/addison2012.xls Original Data and Full Metadata download https://www1.ncdc.noaa.gov/pub/data/paleo/contributions_by_author/addison2012/addison2012.txt HTTPS Download /contributions_by_author/addison2012/addison2012.txt Original Data and Full Metadata download asNeeded This metadata record was translated from DIF using dif-9x-to-iso-19115-2.xsl Version: 2018-10-25