Record Details

Observed salinity changes in the Alappuzha mud bank, southwest coast of India and its implication to hypothesis of mudbank formation

DRS at CSIR-National Institute of Oceanography

View Archive Info
 
 
Field Value
 
Title Observed salinity changes in the Alappuzha mud bank, southwest coast of India and its implication to hypothesis of mudbank formation
 
Creator Muraleedharan, K.R.
DineshKumar, P.K.
B. Srijith
PrasannaKumar, S.
John, Sebin
NaveenKumar, K.R.
 
Subject Oceanography and limnology
Geology and geophysics
Chemistry and biogeochemistry
Oceanography and limnology
 
Description Alappuzha mud bank draws special attention among the twenty-mud bank locations reported along the Kerala coast by its remoteness from riverine sources. Among several hypotheses proposed for the formation of mud bank, the subterranean hypothesis was most accepted because of the occurrence of low salinity in the bottom layers. The present study provides evidence to show that occurrence of low salinity waters near the bottom in the mud bank region is an artifact of measuring technique employed for the measurement of salinity. The usual technique of conductivity based salinity determination completely fails in the presence of water laden with high amount of suspended sediment. Laboratory experiments were conducted to determine the response of electrode and conductivity cell sensor types to determine the salinity using a range of suspended sediment in the water column. Actual sediment samples from the mud bank region were utilized for the above studies. Based on field observations and experiments, we conclude that the low salinity was the manifestation of the presence highly turbid fluid mud formation in the mud bank region rather than the influence of fresh water
 
Date 2017-03-01T11:14:23Z
2017-03-01T11:14:23Z
2017
 
Type Journal Article
 
Identifier Continental Shelf Research, vol.137; 2017; 39-45
http://drs.nio.org/drs/handle/2264/5103
 
Language en
 
Rights An edited version of this paper was published by Elsevier. Copyright [2017] Elsevier
 
Publisher Elsevier