Record Details

Increased particle flux to the deep ocean related to monsoons

DRS at CSIR-National Institute of Oceanography

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Field Value
 
Title Increased particle flux to the deep ocean related to monsoons
 
Creator Nair, R.R.
Ittekkot, V.
Manganini, S.J.
Ramaswamy, V.
Haake, B.
Degens, E.T.
Desai, B.N.
Honjo, S.
 
Subject Chemistry and Biogeochemistry
nutrients (Mineral)
light penetration
euphotic zone
deep water
primary production
seasonal variations
time series
upwelling
equatorial circulation
monsoon reversal
monsoons
particle motion
sediment traps
particulate flux
ISW, Arabian Sea
 
Description Monsoons cause seasonal reversals in the surface circulation of the northern Indian Ocean. In the Arabian Sea this results in the upwelling of nutrient-rich water along the coasts, making it one of the highly productive regions of the world's oceans. To assess the impact of monsoon-driven processes on the downward particle flux variations in the open ocean we deployed three moored arrays consisting of six time-series sediment traps at selected locations in the western, central and eastern parts of the deep northern Arabian Sea. Strong seasonality was recorded in particle flux at all three sites with peaks during the south-west and northeast monsoons. High primary productivity during the monsoons resulting from wind-induced mixed-layer deepening and the associated nutrient injection to the euphotic zone appeared to be the main factor controlling the observed particle flux pattern. These findings may shed light on CO2 uptake during glaciation when wind speeds were higher
 
Date 1995-06-24T10:01:49Z
2017-09-30T01:29:56Z
1995-06-24T10:01:49Z
2017-09-30T01:29:56Z
1989
 
Type Journal Article
 
Identifier Nature, vol.338; 1989; 749-751
0028-0836
http://drs.nio.org/drs/handle/2264/7213
 
Language en
 
Relation Nature
SCI
 
Publisher Nature Publishing Group