Record Details

Oscillating environmental responses of the eastern Arabian Sea

NOPR - NISCAIR Online Periodicals Repository

View Archive Info
 
 
Field Value
 
Title Oscillating environmental responses of the eastern Arabian Sea
 
Creator Gerson, Vijay John
Madhu, N V
Jyothibabu, R
Balachandran, K K
Nair, Maheswari
Revichandran, C
 
Subject Upwelling
Winter cooling
Nutrients
Chlorophylla
Primary production
 
Description 67-75
Characteristics of two distinct physical
processes, the coastal upwelling and convective overturning, which enhance
phytoplankton productivity in the west coast of India, are discussed in this study.
Systematic in-situ data collected during the two contrasting monsoon
(summer and winter) periods were utilized for the study. During summer monsoon,
the colder (27°C), less oxygenated (2 μM) waters were evidenced in the upper layers of the southwest coast of
India, along with higher level of primary production (surface - 76 mgC m-3d-1
& column -1629 mgC m-2d-1) and chlorophyll a (surface
- 1.2 mgm-3 & column -45.7 mgm-2). In contrast,
during winter, the upper thermohaline layer of the northeastern Arabian Sea exhibited colder sea surface temperature
(SST, 25-26°C), and deeper mixed layer depth (MLD, >70 m). This area was
distinguished by less oxygenated (2μM) and high
productive (surface - >10 mgC m-3d-1 & column -
>800 mgC m-2 d-1) waters. I can be stated that the physically
forced chemical changes occurred in the upper layers of both southeastern and
northeastern Arabian Sea, appeared in an oscillating manner with respect to
monsoonal changes, seemed to trigger the enhancement of phytoplankton productivity
of the area.
 
Date 2014-02-05T09:30:35Z
2014-02-05T09:30:35Z
2014-01
 
Type Article
 
Identifier 0975-1033 (Online); 0379-5136 (Print)
http://hdl.handle.net/123456789/26428
 
Language en_US
 
Rights CC Attribution-Noncommercial-No Derivative Works 2.5 India
 
Publisher NISCAIR-CSIR, India
 
Source IJMS Vol.43(1) [January 2014]