Articles | Volume 12, issue 1
https://doi.org/10.5194/bg-12-1-2015
https://doi.org/10.5194/bg-12-1-2015
Research article
 | 
05 Jan 2015
Research article |  | 05 Jan 2015

Spatiotemporal variations of nitrogen isotopic records in the Arabian Sea

S.-J. Kao, B.-Y. Wang, L.-W. Zheng, K. Selvaraj, S.-C. Hsu, X. H. Sean Wan, M. Xu, and C.-T. Arthur Chen

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Cited articles

Agnihotri, R., Altabet, M. A., and Herbert, T.: Influence of marine denitrification on atmospheric N2O variability during the Holocene, Geophys. Res. Lett., 33, , L13704, https://doi.org/10.1029/2006GL025864, 2006.
Aller, R. C.: Transport and reactions in the bioirrigated zone, The benthic boundary layer: Transport processes and biogeochemistry, edited by: B. Boudreau, and Jørgensen, B. B., Oxford University Press, Oxford, UK, 269–301, 2001.
Altabet, M.: Variations in nitrogen isotopic composition between sinking and suspended particles: Implications for nitrogen cycling and particle transformation in the open ocean, Deep-Sea Res. Pt. A, 35, 535–554, 1988.
Altabet, M. and Francois, R.: Sedimentary nitrogen isotopic ratio as a recorder for surface ocean nitrate utilization, Global Biogeochem. Cy., 8, 103–116, 1994.
Altabet, M., Francois, R., Murray, D. W., and Prell, W. L.: Climate-related variations in denitrification in the Arabian Sea from sediment 15N / 14N ratios, Nature, 373, 506–509, 1995.
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Short summary
This paper presents a new sedimentary nitrogen isotope record (d15N) of a sediment core from the southeastern Arabian Sea (AS). By compiling the published nitrogen isotope data in the AS, we obtain geographically distinctive bottom-depth effects for the northern and southern AS since 35ka. After eliminating the bottom-depth bias, we observe opposite d15N trends in the Holocene between these two areas, reflecting a special coupling of denitrification to the north and N2-fixation to the south.
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