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Indian Journal of Geo-Marine Sciences (IJMS) >
IJMS Vol.40 [2011] >
IJMS Vol.40(4) [August 2011] >
| 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
Water-mass
Stratification
Up-welling
Down-welling |
| 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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