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15N Enrichment in the Surface Particulate Organic Nitrogen of the North-eastern Arabian Sea from the Middle to the Waning Phase of the Winter Monsoon: Possible Causes : Volume 4, Issue 1 (27/02/2007)

By Kumar, S.

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Book Id: WPLBN0004020993
Format Type: PDF Article :
File Size: Pages 20
Reproduction Date: 2015

Title: 15N Enrichment in the Surface Particulate Organic Nitrogen of the North-eastern Arabian Sea from the Middle to the Waning Phase of the Winter Monsoon: Possible Causes : Volume 4, Issue 1 (27/02/2007)  
Author: Kumar, S.
Volume: Vol. 4, Issue 1
Language: English
Subject: Science, Ocean, Science
Collections: Periodicals: Journal and Magazine Collection, Copernicus GmbH
Publication Date:
Publisher: Copernicus Gmbh, Göttingen, Germany
Member Page: Copernicus Publications


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Ramesh, R., & Kumar, S. (2007). 15N Enrichment in the Surface Particulate Organic Nitrogen of the North-eastern Arabian Sea from the Middle to the Waning Phase of the Winter Monsoon: Possible Causes : Volume 4, Issue 1 (27/02/2007). Retrieved from

Description: Planetary and Geosciences Division, Physical Research Laboratory, Navrangpura, Ahmedabad- 380 009, India. A temporal increase of ~5‰ in the average nitrogen isotopic composition (Δ15NPON) of surface particulate organic nitrogen was observed in the open north-eastern Arabian Sea during January to late February-early March 2003, despite the presence of T. erithraeum (up to ~11%), a diazotroph that fixes atmospheric N2, in the latter period. Hydrographic conditions and residence time of nitrate in the water column suggested that this increase could be a combined effect of denitrification in the subsurface layer and inefficient utilization of nitrate entrained in the water column during January.

15N enrichment in the surface Particulate Organic Nitrogen of the north-eastern Arabian Sea from the middle to the waning phase of the winter monsoon: possible causes

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