World Library  


Add to Book Shelf
Flag as Inappropriate
Email this Book

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.

Click here to view

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
Historic
Publication Date:
2007
Publisher: Copernicus Gmbh, Göttingen, Germany
Member Page: Copernicus Publications

Citation

APA MLA Chicago

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 http://www.ebooklibrary.org/


Description
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.

Summary
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

Excerpt
Altabet, M. A.: Variations in nitrogen isotopic composition between sinking and suspended particles: Implications for nitrogen cycling and particle transformation in the open ocean, Deep-Sea Res., Part A, 35, 535–554, 1988.; Altabet, M. A. and Francois, R.: The use of nitrogen isotopic ratio for reconstruction of past changes in the surface ocean nutrient utilization, Carbon Cycling in the Glacial Ocean: Constraints on the Ocean's Role in Global Change, edited by: Zahn, R., Kaminski, M. A., Labeyrie, L., and Pederson, T. F., Springer-Verlag, New York, 281–306, 1994.; Altabet, M. A.: Nitrogen and carbon isotopic tracers of the source and transformation of particles in the Deep-Sea, Particle Flux in the Ocean$,$ edited by: Ittekkot, V., Schafer, P., Honjo, S., and Depetris, P. J., John Wiley, New York, 155–184, 1996.; Banse, K.: Overview of the hydrography and associated biological phenomena in the Arabian Sea, off Pakistan, Marine geology and oceanography of Arabian Sea and coastal Pakistan, edited by: Haq, B. U. and Milliman, J. D., Van Nostrand Reinhold Co., New York, 271–303,1984.; Brandes, J. A., Devol, A. H., Yoshinari, T., Jayakumar, T. A., and Naqvi, S. W. A.: Isotopic composition of nitrate in the central Arabian Sea and eastern tropical north Pacific: a tracer for mixing and nitrogen cycles, Limnol. Oceanogr., 43, 1680–1689, 1998.; Calvert S. E., Nielsen, B., and Fontugne, M. R.: Evidence from nitrogen isotope ratios for enhanced productivity during formation of eastern Mediterranean sapropels, Nature, 359, 223–225, 1992.; Cline, J. D. and Kaplan, I. R.: Isotopic fractionation of dissolved nitrate during denitrification in the eastern tropical North Pacific Ocean, Mar. Chem., 3, 271–299, 1975.; Farrell, J. W., Pederson, T. F., Calvert, S. E., and Nielsen, B.: Glacial-interglacial changes in nutrient utilization in equatorial Pacific Ocean, Nature, 377, 514–517, 1995.; Francois, R., Altabet, M. A., and Burkle, L. H.: Glacial to interglacial changes in surface nitrate utilization in the Indian Sector of the Southern Ocean as recorded by sediment $\delta ^15$N, Paleoceanography, 7, 589–606, 1992.; Kumar, S., Ramesh, R., Sardesai, S., Sheshshayee, M. S. and Patel, P. P.: Signature of terrestrial influence on nitrogen isotopic composition of suspended particulate matter in the Bay of Bengal, Current Science, 88(5), 770–774, 2005.; Kumar, S., Ramesh, R., Bhosle, N. B., Sardesai, S. andSeshshayee, M. S.: Natural isotopic composition of nitrogen in suspended particulate matter in the Bay of Bengal, Biogeosci., 1, 63–70, 2004. %; %Kumar, S., Ramesh, R., Dwivedi, R. M., Raman, M., Sheshshayee, M. S., and %DeSouza, W.: Effect of winter cooling on nitrogen uptake in the northeastern %Arabian Sea, J. Geophys. Res., submitted\blackbox\bf status?, 2007.; Liu, K. K. and Kaplan, I. R.: The eastern tropical Pacific as a source of $^15$N-enriched nitrate in seawater off southern California, Limnol. Oceanogr., 34, 820–830, 1989.; Wada, E., Miyazaki, T., and Hattori, A.: $^15$N abundance in nitrogenous compounds in the sea, Proc. 1971 Fall Meet. Oceanogr. Soc. Japan, 227, 1971.; Madhupratap, M., Kumar, S., Bhattathiri, P. M. A., Dileep Kumar, M., Raghukumar, S., Nair, K. K. C., and Ramaiah, N.: Mechanism of the biological response to winter cooling in the northeastern Arabian Sea, Nature, 384, 549–552, 1996.; Mariotti, A., Lancelot, C., and Billen, G.: Natural isotopic composition of nitrogen as a tracer of origin for suspended organic matter in the Scheldt estuary, Geochim. Cosmochim. Acta, 48, 549–555, 1984.; Miyake, Y. and Wada, E.: The abundance ratio of $^15$N/$^14$N in marine environments, Rec. Oceanogr. Works Jpn.$,$ 9, 37–53, 1967.; Miyake, Y. and Wada, E.: The isotope effect on the nitrogen in biochemical, oxidation-reduction reactions, Rec. Oceanogr. Works Jpn., 11, 1–6

 

Click To View

Additional Books


  • Enso Components of the Atlantic Multidec... (by )
  • Estimation of Positive Sum-to-one Constr... (by )
  • Optimal Adjustment of the Atmospheric Fo... (by )
  • Salinity/Temperature Ranges for Applicat... (by )
  • Operational Sar-based Sea Ice Drift Moni... (by )
  • Sea Surface Temperature Anomalies, Seaso... (by )
  • On the Glacial and Inter-glacial Thermoh... (by )
  • Constraining Energetic Slope Currents Th... (by )
  • Effects of the 2003 European Heatwave on... (by )
  • Modelling Survival and Connectivity of M... (by )
  • The Role of Subpolar Deep Water Formatio... (by )
  • Indian Ocean Subtropical Mode Water: Its... (by )
Scroll Left
Scroll Right

 



Copyright © World Library Foundation. All rights reserved. eBooks from World eBook Library are sponsored by the World Library Foundation,
a 501c(4) Member's Support Non-Profit Organization, and is NOT affiliated with any governmental agency or department.