de.pangaea.dataset930736 und dataset PANGAEA
info@pangaea.de
https://www.pangaea.de/ information pointOfContact 2026-04-30T21:45:11Z https://doi.pangaea.de/10.1594/PANGAEA.930736 <gco:CharacterString>Centennial scale denitrification variability based on isotopic and geochemical proxies from the Arabian Sea since the last glacial period</gco:CharacterString> 2021-04-23T09:33:20 publication https://doi.org/10.1594/PANGAEA.930736 Tiwari, Manish
manish@ncpor.res.in
https://orcid.org/0000-0003-3143-1658 information author Nagoji, Sidhesh
nagojisidd@gmail.com
author PANGAEA
info@pangaea.de
https://www.pangaea.de/ information publisher tableDigital Isotopic (nitrogen and carbon isotope ratio of sedimentary organic matter), geochemical (total organic carbon and total nitrogen content of sediment), and micropaleontological (Globigerina bulloides abundance) analyses were done in samples from a marine sediment core. This gravity-core was collected during the 274th cruise of the ORV Sagar Kanya from the Southeastern Arabian Sea. The chronology of the core is based on nine radiocarbon dates obtained using two species of planktic foraminifera (Globigerinoides ruber, Globigerinoides sacculifer; size range: 250–420 μm). It spans the last ~ 43 thousand years and the average resolution is ~150 years. For total organic carbon concentration and carbon isotope ratio estimation, carbonate was removed by treating the sample with 2N hydrochloric acid for 16 hours followed by centrifuging. Given the known problems of loss of nitrogen compounds from the sedimentary organic matter on acidification of samples, resulting in a bias in nitrogen content and nitrogen isotope ratios, untreated samples were used for their analysis. This data was used to study centennial-scale denitrification and productivity variability from the Southeastern Arabian Sea. completed Tiwari, Manish
manish@ncpor.res.in
https://orcid.org/0000-0003-3143-1658 information principalInvestigator Arabian Sea Carbon isotopes Denitrification Foraminifera abundance G. bulloides geochemical archives global Monsoons nitrogen isotope organic carbon (OC) Paleoceanography paleoclimatology Quaternary Stable isotopes Teleconnection ventilation theme <gco:CharacterString>PANGAEA Keyword List</gco:CharacterString> 1995-01-01 creation PANGAEA
info@pangaea.de
https://www.pangaea.de/ information pointOfContact copyright copyright CC-BY-4.0: Creative Commons Attribution 4.0 International textTable und geoscientificInformation 72.0 72.0 13.98333 13.98333 AGE physicalMeasurement ka BP ka BP Carbon, organic, total physicalMeasurement % % δ13C, total organic carbon physicalMeasurement Isotope Ratio Mass Spectrometer, IsoPrime; vs. VPDB ‰ PDB ‰ PDB Nitrogen, total physicalMeasurement % % δ15N physicalMeasurement Isotope Ratio Mass Spectrometer, IsoPrime ‰ air ‰ air Carbon/Nitrogen ratio thematicClassification atomic text/tab-separated-values unknown https://doi.pangaea.de/10.1594/PANGAEA.930736?format=textfile download dataset The data set was checked for completeness, correctness, and consistency of metainformation. Validity of used methods was checked and - if applicable - precision and range of data. EVENT LABEL: SK274-4G * LATITUDE: 13.983330 * LONGITUDE: 72.000000 * ELEVATION: -1290.0 m * LOCATION: Arabian Sea * CAMPAIGN: SK274 * BASIS: Sagar Kanya * METHOD/DEVICE: Gravity corer Related to <gco:CharacterString>Causes and Climatic Influence of Centennial Scale Denitrification Variability in the Southeastern Arabian Sea since the Last Glacial Period</gco:CharacterString> 2021-01-01 publication https://doi.org/10.1017/qua.2020.118 Nagoji, Sidhesh
nagojisidd@gmail.com
author Tiwari, Manish
manish@ncpor.res.in
https://orcid.org/0000-0003-3143-1658 information author documentDigital Quaternary Research 1-13