Basin-scale Arabian Sea denitrification reconstruction based on δ¹⁵N records, Southern Arabian Sea Stack
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| Natura: | Dataset Open Access |
| Lingua: | en |
| Pubblicazione: |
PANGAEA
2026
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| _version_ | 1867168548839751680 |
|---|---|
| author | Singh, Dharmendra Pratap |
| author_facet | Singh, Dharmendra Pratap |
| collection | Datos científicos de ciencias marinas y ambientales |
| contents | The new δ¹⁵N record of sediment core SSD004_GC11 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. |
| format | Dataset Open Access |
| id | pangaea_https___doi_org_10_1594_PANGAEA_993906 |
| institution | PANGAEA |
| language | en |
| publishDate | 2026 |
| publisher | PANGAEA |
| record_format | pangaea |
| spellingShingle | Basin-scale Arabian Sea denitrification reconstruction based on δ¹⁵N records, Southern Arabian Sea Stack Singh, Dharmendra Pratap AGE; Arabian Sea; calculated, 1 sigma; d15N; GC; GOA4; GOA6; Gravity corer; KAL; Kasten corer; KL-74, AS-12; NIOP_905; SEDCO; Sedimentary geochemistry; Sediment corer; Sindhu Sadhana; SO42; SO42-74KL; Sonne; SS4018G; SSD004_GC11; Stack; Stacked; TN; δ15N, bulk sediment; δ15N, standard deviation The new δ¹⁵N record of sediment core SSD004_GC11 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. |
| title | Basin-scale Arabian Sea denitrification reconstruction based on δ¹⁵N records, Southern Arabian Sea Stack |
| topic | AGE; Arabian Sea; calculated, 1 sigma; d15N; GC; GOA4; GOA6; Gravity corer; KAL; Kasten corer; KL-74, AS-12; NIOP_905; SEDCO; Sedimentary geochemistry; Sediment corer; Sindhu Sadhana; SO42; SO42-74KL; Sonne; SS4018G; SSD004_GC11; Stack; Stacked; TN; δ15N, bulk sediment; δ15N, standard deviation |
| url | https://doi.org/10.1594/PANGAEA.993906 |