HEAT TRANSPORT OF MAKASSAR STRAIT 2002-2012

• Main Author: Oktaria Yudowaty, Shinta
• Format: Theses
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/86820
• Institution: Institut Teknologi Bandung

Indonesian Throughflow (ITF) flows from Pacific Ocean into Indian Ocean carrying warm water mass through Makassar Strait. Currents velocity and sea temperature from HYCOM model data are used to determine heat transport carried in and carried out by ITF within Makassar Strait. Heat transport is calculated as volume transport multiplied by temperature, density and specific heat, with reference temperature 3,4 ºC. The calculation is applied into two study areas which are north side and south side of Makassar Strait as incoming passage and outgoing passage respectively. Both volume transport and heat transport of Makassar Strait moves southward. Maximum heat transport occurs in 0 – 100 m where strong ITF occurs. Makassar heat transport are affected by monsoon. The strongest heat transport Average seasonal heat transport reach maximum value during east monsoon at 1,09 PW in the incoming passage and 1,05 PW in the outgoing passage. Minimum volume transport occurred during second transitional monsoon at 0,82 PW in the incoming passage and 0,78 PW in the outgoing passage. Heat transport relatively decrease in the outgoing passage with 0,03 PW average difference. It is caused by temperature in the outgoing passage is more varies against time. Furthermore outgoing passage directly connected to dynamics of other seas in the south of Makassar Strait. Heat transport is influenced by interannual which are El Nino and La Nina. During El Nino, southward volume transport and southward heat transport are decreasing in both passages, but the influence of La Nina does not appear clearly allegedly because the peak of La Nina in this study were between the second transitional monsoon and west monsoon, which is during this monsoon southward transport is weakened.