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第 150 回 大気海洋物理学・気候力学セミナー のおしらせ

日　時： 11月 10日(木) 午前 10:45
場　所：低温科学研究所 新棟 3階 講堂

発表者：Alan Frendy Koropitan (Division of Environmental Science Development D1)
題　目：TIDES ON THE JAVA SEA

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TIDES ON THE JAVA SEA (Alan Frendy Koropitan) 発表要旨 :

  
 As many shelf ecosystems, the Java Sea is under growing stress caused 
 by the various and partly conflicting human demands, such as human 
 settlement, industry and infrastructure, and fishing activities.  In 
 order to study the environmental problems, firstly we have to describe 
 the physical aspect of the Java Sea.  We used the three-dimensional 
 hydrodynamic Princeton Ocean Model and field observation from eleven 
 tidal gauge stations, seven current meter mooring buoys, and 
 hydrographic data to analyze tides, tidal current and mixing 
 quantities. The calculated elevation cotidal charts are mostly 
 comparable with field observations and previous research.  We found K1 
 component is a major tidal constituent and strong related with 
 resonance that occurs in the central part of the Java Sea.  The model 
 result indicates that an increase in vertical eddy viscosity 
 magnitudes and bottom friction velocities are associated with strong 
 K1 tidal current in the region of tidal resonance.  Both north-east 
 and south-west monsoon CTD profile are investigated and increased 
 mixing is found in the central part of the Java Sea.  The model 
 results suggest that tides contribute significantly to the turbulent 
 mixing, also important for vertical exchange of material and its 
 behavior in the Java Sea region. 
  

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