Agnihotri, Rajesh ; Bhattacharya, S. K. ; Sarin, M. M. ; Somayajulu, B. L. K. (2003) Changes in surface productivity and subsurface denitrification during the holocene: a multiproxy study from the eastern Arabian sea The Holocene, 13 (5). pp. 701-713. ISSN 0959-6836
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Official URL: http://hol.sagepub.com/content/13/5/701.short
Related URL: http://dx.doi.org/10.1191/0959683603hl656rp
Abstract
Spatial and temporal variations in the intensity of subsurface denitrification in the water-column of the eastem Arabian Sea have been investigated using chemical and isotopic proxies. The data show a steady increase in the denitrification intensity from ~10 ka to ~2 ka BP, probably caused by changes in surface productivity fuelled by strengthening of upwelling (monsoonal intensity). In addition, changes in redox conditions and detrital material input are assessed using abundances of a suite of major and trace elements. The temporal variations in some of the monsoonal proxies are characterized by periodicities of ~1400 and ~700 years, similar to those reported in the South Asian (Chinese) monsoon and high-latitude climate (north Atlantic region).
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to Sage Publications. |
| Keywords: | Monsoon; Denitrification; Surface Productivity; Upwelling; Periodicities; Trace Elements; Geochemistry; Stable Isotopes; Arabian Sea; Holocene |
| ID Code: | 52747 |
| Deposited On: | 04 Aug 2011 09:21 |
| Last Modified: | 04 Aug 2011 09:21 |
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