#TITLE_ALTERNATIVE#

• Main Author: SATRIA WICAKSANA ADHIPURUSA (NIM : 12908013); Pembimbing : Ivonne Milichristi Radjawane, M.S, RADEN
• Format: Final Project
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/19198
• Institution: Institut Teknologi Bandung

The Earth's climate between ~23 - 62 thousand years ago which is known as Marine Isotope Stage 3 (MIS 3) showed warm (interstadial) and cold (stadial) centennial cycles. The warm cycle is called Dansgaard Oescgher (DO) events that followed cold cycle Heinrich event (HE) <br /> <br /> <br /> which is related to meridional overturning circulation (MOC). This study is conducted by calculating temperature difference between Mg/Ca-reconstructed SST represented by Globigeronoides ruber (white) and Mg/Ca-reconstructed 100 m temperature represented by Pulleniatina obliquiloculata from sediment core SO185-18460 (8o47,386'LS; 128o38,485'BT; 1875 m depth) in Timor strait. Comparison between five calibration equations with World Ocean Atlas 2009 data and simulation result from Brandefelt et al. (2011) yield the equations of Anand et al., (2003) as suitable equations to be used in Timor Sea data. Comparison <br /> <br /> <br /> between vertical temperature gradient to Greenland ice core and sea level reconstruction showed that vertical temperature gradient of Timor Sea is more influenced by sea level. Large &#916;T that occurred during low sea level indicated a surface-intensified Indonesian Throughflow <br /> <br /> <br /> (ITF) during low sea level forming warm surface flow. Calculation of Horizontal temperature gradient at 100 m with sediment core MD01-2378 (8o47,386'LS; 128o38, 485'BT; 1875 m depth) in Timor Sea showed the presence of warmer flow from the Indian Ocean to the Timor Sea during HE. Horizontal SST gradient show only three distinct patterns during HE3, HE4 and HE5 while HE5a and HE6, that are less intense than the previous three events, are not detected. <br />