de.pangaea.dataset993898 und dataset PANGAEA
info@pangaea.de
https://www.pangaea.de/ information pointOfContact 2026-04-29T10:55:10Z https://doi.pangaea.de/10.1594/PANGAEA.993898 <gco:CharacterString>Basin-scale Arabian Sea denitrification reconstruction based on δ¹⁵N records including core SSD004 GC11</gco:CharacterString> 2026-04-29T10:54:43 publication Singh, Dharmendra Pratap
dharmendra.singh@es.iitr.ac.in
https://orcid.org/0000-0001-5563-1633 information author PANGAEA
info@pangaea.de
https://www.pangaea.de/ information publisher tableDigital This dataset provides nitrogen isotopic composition (δ¹⁵N) and total nitrogen (TN) measurements from marine sediment core SSD004 GC11 in the southern Arabian Sea covering the last ~167 ka. The records document variability in water-column denitrification, an important control on marine nitrogen cycling and atmospheric N₂O emissions. δ¹⁵N values indicate strong coupling between primary productivity and denitrification during warm intervals, with weaker coupling during cold periods despite continued productivity linked to winter monsoon mixing. The new δ¹⁵N record is combined with published regional datasets to produce a basin-wide Arabian Sea denitrification stack. Spectral and cross-wavelet analyses reveal dominant orbital-scale variability, with stronger obliquity influence in the southern basin and precession dominance in northern records. Coherent variability between δ¹⁵N records and atmospheric N₂O concentrations highlights orbital forcing as a key driver of long-term nitrogen cycling and greenhouse gas variability. completed Arabian Sea d15N Sedimentary geochemistry Stack TN 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 46.9323 78.9312 6.0 24.84283 1976-01-01T00:00:00 2007-10-02T21:32:00 application/zip unknown https://doi.pangaea.de/10.1594/PANGAEA.993898?format=zip 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. Related to <gco:CharacterString>Orbital forcing regulated Arabian Sea denitrification during the late Pleistocene</gco:CharacterString> 2026-01-01 publication https://doi.org/10.1016/j.gloplacha.2026.105373 Pawar, Rahul author Singh, Dharmendra Pratap
dharmendra.singh@es.iitr.ac.in
https://orcid.org/0000-0001-5563-1633 information author Saraswat, Rajeev
rsaraswat@nio.org
https://orcid.org/0000-0003-2110-2578 information author Maurya, A S author documentDigital Global and Planetary Change 259 105373