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Title: A note on the hydrographic conditions in the upper halocline region off Bhatkal and Kundapur, Karnataka, during the late phase of southwest monsoon.
Authors: Krishnaprasad, P.A.
Hegde, V.S.
Tyagi, Abhishek
Keywords: Salinity maxima
Issue Date: Aug-2011
Publisher: NISCAIR-CSIR, India
Abstract: Hydrographic conditions in the upper halocline region of the continental shelf off Bhatkal and Kundapur is studied utilizing the data collected on board ORV Sagar Kanya during 28th and 29th of Aug. 2008. Salinity, temperature, and dissolved oxygen profiles are acquired for seven stations from an area of 300 sq Km between the depths 35 and 20 m and also from two stations along the 45 m bathymetry. Variation in salinity is observed (34.7 to 36.2 PSU) in the upper halocline region and salinity maxima occurred between depths of 5–15 m. Sea surface temperature was between 24 to 27° C. Drastic decrease in dissolved oxygen concentrations with depth also observed in the upper halocline. These features reveal stratified nature of the water column at > 40 m bathymetry and significant upwelling and buoyant mixing of water masses between 40 and 20 m depth (bathymetry) during the late phase of monsoon.
Page(s): 572-577
CC License:  CC Attribution-Noncommercial-No Derivative Works 2.5 India
ISSN: 0975-1033 (Online); 0379-5136 (Print)
Source:IJMS Vol.40(4) [August 2011]

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