Hydrography of Fishing Grounds of Arabian Sea off Mangalore
Hydrography of Fishing Grounds of Arabian Sea off Mangalore
Date
1980
Authors
MALIEL, MATHEW M.
SALIAN, P. K
MENON, N. R
SHETTY, H. P. C
Journal Title
Journal ISSN
Volume Title
Publisher
Society of Fisheries Technologists (India) Cochin
Abstract
Hydrographical parameters, namely temperature, salinity, disi>olved oxygen and density
of the fishing grounds off Mangalore extending over an are2. of ca 850 km2 have been
studi~d during March 1976-March 1977. Twelve stations o.long three transects up to
50 m Isobath were located for sampling. The vertical distribution of temperature show
three distinct phases, namely, a period of conspicuous variation, a short intermedjary
phase and a period of thermal stability. The disso]ved oxygen of the bottom waters was
drastically low during September. Salinity :fluctuations were not considerable between
months an~ depths. Dense waters existed over the shelf region, especially along the
bottom dunng Septemb~r and to a certain extent in October also. The distribution patterns
of temperature, dtssolved oxygen . and density cl~arly indicate the movement of
cold, dense, oxygen-poor- bottom waters from greater depths to the upper reaches
of the shelf during September
Description
Keywords
Hydrography ,Fishing Grounds ,Arabian Sea ,off Mangalore
Citation
Fishery Tech 17(1):79-86