Holocene records of foraminifera oxygen isotope and Mg/Ca-temperatures from MD98-2188

• Main Authors: Dang, Haowen, Jian, Zhimin, Bassinot, Franck, Qiao, Peijun, Cheng, Xinrong
• Format: Dataset
• Language: English
• Published: PANGAEA 2020
• Subjects: AGE; Calculated from Mg/Ca ratios (Anand et al.; 2003); CALYPSO; Calypso Corer; DEPTH; sediment/rock; Globigerinoides ruber; δ18O; Holocene; IMAGES IV-IPHIS III; Isotope ratio mass spectrometry; Marion Dufresne (1995); MD111; MD982188; MD98-2188; Pulleniatina obliquiloculata; Sea surface temperature; annual mean; SST; Thermocline; Thermocline water temperature; Western Philippine Sea; Pacific; Planktonic foraminifera
• Online Access: https://doi.pangaea.de/10.1594/PANGAEA.923621; https://doi.org/10.1594/PANGAEA.923621

The Holocene variability in sea surface and thermocline water temperatures (SST and TWT) in the Indo-Pacific Warm Pool (IPWP) has been reconstructed by shell Mg/Ca of two planktonic foraminifera species, the mixed-layer dweller Globigerinoides ruber and the thermocline dweller Pulleniatina obliquiloculata, from sediments of Core MD98-2188 (14.82°N, 123.49°E, 730 m water depth) recovered in the western tropical Philippine Sea. Afterward the Younger Dryas interval (YD), SST warmed gradually till ~10 ka and remained approximately constant afterwards, but TWT rose more rapidly to a peak between ~12 and ~10 ka and then declined by ~1.5°C through the Holocene. The trend of TWT closely followed the boreal summer insolation and could be correlated to tropical climate changes represented by southward movement of the Inter-tropical Convergence Zone (ITCZ) and related changes in East Asian monsoons.