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Articles by Md N.B. Abu Bakar
Total Records ( 2 ) for Md N.B. Abu Bakar
  S. Jamshidi and Md N.B. Abu Bakar
  Sound speed computation based on field observations of temperature, salinity and pressure in the Southern coastal waters of the Caspian Sea, off Babolsar port in Autumn 2008 was presented. The collected data showed a variation of sound speed between 1488 m sec-1 at the sea surface to 1460 m sec-1 at depth of 42 m in the study area. In the sea surface mixed layer, sound speed mainly ranged between 1487-1488 m sec-1. The results showed strong vertical gradient but weak horizontal gradient of sound speed in the water column. Vertical structure of sound speed indicated a sharply decreasing trend from 1488 to 1460 m sec-1 across the thermocline. The sound speed variations follow the variations in temperature, indicating strong correlation between the two parameters in the study area. Therefore, sound speed was predominantly influence by temperature rather than salinity and pressure.
  S. Jamshidi , Md N.B. Abu Bakar and M. Yousefi
  In the study, chlorophyll-a concentrations were examined using field observations by Ocean seven 316 profiler over the Southern continental shelf of the Caspian Sea near Iranian coasts. The data were collected at nine stations with a maximum depth of 117 m depth along three transects in perpendicular to the Southern coasts of the Caspian Sea, off Rudsar in Summer 2008. Amounts of the chlorophyll-a varied from 3.8 to 0.1 mg m-3 with the maximal levels at 15 m depth. The formation and destruction of seasonal thermocline affect the chlorophyll-a concentrations. Chlorophyll-a concentration sharply decreased with depth and reached around 0.1 mg m-3 near bottom.
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