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OAS accession Detail for 0278030
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| accessions_id: | 0278030 | archive |
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| Title: | Amino acid compound specific isotope values for particles from R/V Kilo Moana KM1407 and KM1418 in the Central North Pacific, Station ALOHA, Tropical Pacific, Feb and Sept. 2014 (NCEI Accession 0278030) |
| Abstract: | This dataset contains chemical data collected on R/V Kilo Moana during cruises KM1407 and KM1418 from 2014-02-19 to 2014-09-11. These data include d15N and depth. The instruments used to collect these data include Gas Chromatograph, Ion Chromatograph, and Large Volume Pumping System-WTS-LV. These data were collected by Dr Brian N. Popp, Dr Cecelia Hannides, Dr Jeffrey C. Drazen, and Dr Kanesa Seraphin of University of Hawaii at Manoa, Dr Joel Blum of University of Michigan Ann Arbor, and Dr Claudia Benitez-Nelson of University of South Carolina at Columbia as part of the "Collaborative Research: Isotopic insights to mercury in marine food webs and how it varies with ocean biogeochemistry (Hg_Biogeochemistry)" project. The Biological and Chemical Oceanography Data Management Office (BCO-DMO) submitted these data to NCEI on 2019-03-18. The following is the text of the dataset description provided by BCO-DMO: Amino acid specific isotopes in particles, station ALOHA Dataset Description: This dataset contains amino acid compound specific nitrogen isotope ratios in particles collected during R/V Kilo Moana cruises around Station ALOHA (KM1407 and KM1418). For more information about the ALOHA observatory see: http://aco-ssds.soest.hawaii.edu/ These data were published in Gloeckler et al (2018), Supporting Information file lno10762-sup-0002-suppinfo2.xlsx |
| Date received: | 20190318 |
| Start date: | 20140219 |
| End date: | 20140911 |
| Seanames: | |
| West boundary: | -158 |
| East boundary: | -158 |
| North boundary: | 22.75 |
| South boundary: | 22.75 |
| Observation types: | chemical |
| Instrument types: | chromatograph |
| Datatypes: | DELTA NITROGEN-15, DEPTH - OBSERVATION |
| Submitter: | |
| Submitting institution: | Biological and Chemical Oceanography Data Management Office |
| Collecting institutions: | University of Hawai'i at Mānoa, University of South Carolina |
| Contributing projects: | |
| Platforms: | KILO MOANA (33KB) |
| Number of observations: | |
| Supplementary information: | Acquisition Description: Amino acid-specific stable N isotope composition was determined on samples that were hydrolyzed, derivatized, and analyzed according to Popp et al. (2007) and Hannides et al. (2009). Briefly, size-fractioned zooplankton material and target zooplankton taxa were hydrolyzed using trace metal-grade 6 M HCl and the resulting AAs purified using cation exchange chromatography. The samples were then esterified using 4:1 isopropanol:acetyl chloride and derivatized using 3:1 methylene chloride:trifluoroacetyl anhydride. The resulting trifluoroacetyl and isopropyl ester (TFA) derivatives were purified using chloroform extraction and stored at -20°C for up to 1 month before analysis. This method yielded information for the following AAs: alanine (Ala), glycine (Gly), isoleucine (Ile), leucine (Leu), lysine (Lys), methionine (Met), phenylalanine (Phe), proline (Pro), serine (Ser), threonine (Thr), tyrosine (Tyr), and valine (Val). During acid hydrolysis asparagine (Asn) is converted to aspartic acid (Asp) and glutamine (Gln) is converted to glutamic acid (Glu), thus we also report information on the combined pools, termed Asx (Asn+Asp) and Glx (Gln+Glu), respectively. TFA derivatives of AAs were analyzed for stable N isotope composition (d15NAA values) following Hannides et al. (2013). AAs were analyzed using a Thermo Scientific Delta V Plus IRMS interfaced to a trace gas chromatograph (GC) fitted with a 60 m BPx5 capillary column through a GC-C III combustion furnace (980°C), reduction furnace (680°C) and liquid nitrogen cold trap. d15NAA values were measured on 3 – 5 replicate injections with norleucine and aminoadipic acid with known d15N values as internal reference materials co-injected on each run. A composite source d15NAA value was calculated by a weighted averaging a suite of AAs (e.g., d15NSrc-AA = average of Gly, Lys, Phe, and Ser d15N values). Weighting was based the analytical uncertainty calculated from at least triplicate analysis of each sample. |
| Availability date: | |
| Metadata version: | 1 |
| Keydate: | 2023-05-11 04:28:52+00 |
| Editdate: | 2023-05-11 04:29:10+00 |