CLIMATE VARIABILITY SINCE LAST GLACIAL MAXIMUM BASED ON DISTRIBUTION OF FORAMINIFERA IN NORTH PAPUA WATERS, PACIFIC OCEAN

Foraminifera distribution is one of the proxies used to reconstruct climatic conditions and paleoceanography. Specific species or groups of foraminifera can be associated with certain oceanographic parameters. As the entrance to Indonesia Through Flow (ITF), North Papua Waters has the role of channeling water masses from the Pacific Ocean to Indonesian Waters. It is also influenced by global scale oceanic belts and ENSO. In this study, observations were made of changes in the distribution of foraminifera to reconstruct paleoclimate and paleoceanographic conditions in the Northern Waters of Papua and their relation to global climate conditions. The analysis was performed on 246 cm core sediments with eight cm foraminifera observation intervals at sample depths 246-126 cm and four cm at sample depths of 126-0 cm. Foraminifera data is also supported by radiocarbon dating data. Planktonic abundant species of foraminifera are Pulleniatina obliqueloculata, Neogloboquadrina dutertrei, Globorotalia menardii, Obrina Spady, Obiolina Spier, Oolina spadybrina, Oolina spadybrina, Oolina spadybrina, Oolina spadyolina. and Quinqueloculina spp. Division according to cluster analysis can show the difference between Holocene and Pleistocene which is then more detailed divided into 17 clusters. Biozonation shows climate change since the Late Pleistocene and records several global climate changes such as Last Glacial Maximum, Younger Dryas, 8.2K, Holocene Thermal Maximum, and Little Ice Age.