Singh, Dharmendra Pratap (2026): δ¹⁵N and TN records of sediment core SSD004 GC11 [dataset]. PANGAEA, https://doi.pangaea.de/10.1594/PANGAEA.993903 (DOI registration in progress), In: Singh, DP (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)
Always quote citation above when using data! You can download the citation in several formats below.
Published: 2026-04-29
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.
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:
Coverage:
Latitude: 6.000000 * Longitude: 78.931200
Minimum DEPTH, sediment/rock: 0.005 m * Maximum DEPTH, sediment/rock: 5.835 m
Event(s):
SSD004_GC11 * Latitude: 6.000000 * Longitude: 78.931200 * Elevation: -2901.0 m * Basis: Sindhu Sadhana * Method/Device: Gravity corer (GC)
Parameter(s):
| # | Name | Short Name | Unit | Principal Investigator | Method/Device | Comment |
|---|---|---|---|---|---|---|
| 1 | DEPTH, sediment/rock | Depth sed | m | Singh, Dharmendra Pratap | Geocode | |
| 2 | Depth, sediment/rock, top/minimum | Depth sed top | m | Singh, Dharmendra Pratap | ||
| 3 | Depth, sediment/rock, bottom/maximum | Depth sed bot | m | Singh, Dharmendra Pratap | ||
| 4 | AGE | Age | ka BP | Singh, Dharmendra Pratap | Geocode | |
| 5 | δ15N, bulk sediment | δ15N bulk | ‰ air | Singh, Dharmendra Pratap | Isotope Ratio Mass Spectrometer (IRMS) Thermo Fisher Scientific, MAT 253 Plus | |
| 6 | Nitrogen, total | TN | % | Singh, Dharmendra Pratap | Isotope Ratio Mass Spectrometer (IRMS) Thermo Fisher Scientific, MAT 253 Plus | wt. % |
| 7 | Tephra/volcanic ash | Tephra | Singh, Dharmendra Pratap |
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0)
Status:
Curation Level: Enhanced curation (CurationLevelC)
Size:
2333 data points
Download Data
View dataset as HTML (shows only first 2000 rows)