Water masses is body of water which is homogenous and is featured by it’s characteristics. The major characteristics to describe water masses are temperature, salinity and density as the main component to identify water masses which flows into an area, including Makassar Strait as the main route of Indonesia Trough Flow (ITF).
The purpose of this research were to show the distribution of temperature, salinity and dissolved oxygen in Makassar Strait in July 2005 and to study water masses characteristics which flowed along Makassar Strait. The coverage area in this research were between 4° 59' 24.0"LS – 3° 29' 24.0" LS and between 118° 6' 0.0" BT – 118° 48' 0.0" BT. The research was carried out during INSTANT (International Nusantara Stratification and Transport) cruise on July 3rd – 14th, 2005. The methods used in this research were measuring physical oceanography parameter such as temperature, salinity and density by using CTD (Conductivity Temperature Depth) and measuring dissolved oxygen by titration method. Then the data was analyzed by several graphic profiles, vertically, horizontally, and T-S diagram to observe the origin of water masses in that area.
The research result showed that the temperature in northern Makassar Strait warmer than southern. In northern temperature is between 29,14oC - 29,69oC and in southern is between 27,44oC - 29,10oC. In northern the salinity was for about 33,441 psu - 35,314 psu while in southern it was between 33,916 psu - 35,206 psu. Meanwhile the distribution of dissolved oxygen in northern was between 3,25 ml/l – 3,52 ml/l and between 3,20 ml/l – 3,84 ml/l in southern. Water masses within Makassar Strait originally came from Northern Pacific Ocean which consisted of North Pacific Subtropical Water in 100 – 150 meter depth and North Pacific Intermediate Water in depth of 350 – 400 meter.
Keywords: Water mass, temperature, salinity, dissolve oxygen content, Makassar Strait
Author: Muhamad Yusuf Awaludin
Advisors: Heryoso Setiyono and Anastasia Rita
The purpose of this research were to show the distribution of temperature, salinity and dissolved oxygen in Makassar Strait in July 2005 and to study water masses characteristics which flowed along Makassar Strait. The coverage area in this research were between 4° 59' 24.0"LS – 3° 29' 24.0" LS and between 118° 6' 0.0" BT – 118° 48' 0.0" BT. The research was carried out during INSTANT (International Nusantara Stratification and Transport) cruise on July 3rd – 14th, 2005. The methods used in this research were measuring physical oceanography parameter such as temperature, salinity and density by using CTD (Conductivity Temperature Depth) and measuring dissolved oxygen by titration method. Then the data was analyzed by several graphic profiles, vertically, horizontally, and T-S diagram to observe the origin of water masses in that area.
The research result showed that the temperature in northern Makassar Strait warmer than southern. In northern temperature is between 29,14oC - 29,69oC and in southern is between 27,44oC - 29,10oC. In northern the salinity was for about 33,441 psu - 35,314 psu while in southern it was between 33,916 psu - 35,206 psu. Meanwhile the distribution of dissolved oxygen in northern was between 3,25 ml/l – 3,52 ml/l and between 3,20 ml/l – 3,84 ml/l in southern. Water masses within Makassar Strait originally came from Northern Pacific Ocean which consisted of North Pacific Subtropical Water in 100 – 150 meter depth and North Pacific Intermediate Water in depth of 350 – 400 meter.
Keywords: Water mass, temperature, salinity, dissolve oxygen content, Makassar Strait
Author: Muhamad Yusuf Awaludin
Advisors: Heryoso Setiyono and Anastasia Rita
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