/* DATA DESCRIPTION:
Citation:	Singh, Dharmendra Pratap (2026): Basin-scale Arabian Sea denitrification reconstruction based on δ¹⁵N records including core SSD004 GC11 [dataset bundled publication]. PANGAEA, https://doi.pangaea.de/10.1594/PANGAEA.993898 (DOI registration in progress)
Abstract:	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.
Keyword(s):	Arabian Sea; d15N; Sedimentary geochemistry; Stack; TN
Related to:	Pawar, Rahul; Singh, Dharmendra Pratap; Saraswat, Rajeev; Maurya, A S (2026): Orbital forcing regulated Arabian Sea denitrification during the late Pleistocene. Global and Planetary Change, 259, 105373, https://doi.org/10.1016/j.gloplacha.2026.105373
Funding:	Science and Engineering Research Board (SERB), grant/award no. SRG/2021/000620
Coverage:	MEDIAN LATITUDE: 14.213590 * MEDIAN LONGITUDE: 67.246301 * SOUTH-BOUND LATITUDE: 6.000000 * WEST-BOUND LONGITUDE: 46.932300 * NORTH-BOUND LATITUDE: 24.842830 * EAST-BOUND LONGITUDE: 78.931200
	DATE/TIME START: 1976-01-01T00:00:00 * DATE/TIME END: 2007-10-02T21:32:00
License:	Creative Commons Attribution 4.0 International (CC-BY-4.0) (URI: https://creativecommons.org/licenses/by/4.0/)
Size:	6 datasets
*/
/* TABULAR SUMMARY OF DATASETS LISTED IN THIS COLLECTION: */
Filename	Citation of child dataset
1_SSD004_GC11_nitrogen.tab	Singh, Dharmendra Pratap (2026): δ¹⁵N and TN records of sediment core SSD004 GC11. https://doi.pangaea.de/10.1594/PANGAEA.993903
15N_arabian_sea.tab	Singh, Dharmendra Pratap (2026): Basin-scale Arabian Sea denitrification reconstruction based on δ¹⁵N records, Arabian Sea Stack. https://doi.pangaea.de/10.1594/PANGAEA.993904
15N_eastern_arabian_sea.tab	Singh, Dharmendra Pratap (2026): Basin-scale Arabian Sea denitrification reconstruction based on δ¹⁵N records, Eastern Arabian Sea Stack. https://doi.pangaea.de/10.1594/PANGAEA.993908
15N_northern_arabian_sea.tab	Singh, Dharmendra Pratap (2026): Basin-scale Arabian Sea denitrification reconstruction based on δ¹⁵N records, Northern Arabian Sea Stack. https://doi.pangaea.de/10.1594/PANGAEA.993905
15N_southern_arabian_sea.tab	Singh, Dharmendra Pratap (2026): Basin-scale Arabian Sea denitrification reconstruction based on δ¹⁵N records, Southern Arabian Sea Stack. https://doi.pangaea.de/10.1594/PANGAEA.993906
15N_western_arabian_sea.tab	Singh, Dharmendra Pratap (2026): Basin-scale Arabian Sea denitrification reconstruction based on δ¹⁵N records, Western Arabian Sea Stack. https://doi.pangaea.de/10.1594/PANGAEA.993907
