Holocene and Last Glacial Maximum thermocline reconstructions in the Indo-Pacific Warm Pool

我们建议重建印度-太平洋暖池（IPWP）地区的全新世和末次冰期最大（LGM）温跃层剖面，并调查与厄尔尼诺-南方涛动（ENSO）和澳大利亚-亚洲季风系统的关系。对来自ODP、R/V“索内”和R/V“Marion Dufresne”巡航的25个岩心进行的表层和温跃层浮游有孔虫稳定同位素和Mg/Ca分析以及组合计数，将提供IPWP的全面区域覆盖范围，这将允许对三个关键时间片（最近、全新世早期岁差最大值和LGM）进行三维温跃层重建。我们的主要目标是：1）估算IPWP地区末次盛冰期和全新世早期的海面和温跃层沃茨的温度和盐度，并计算出末次盛冰期、全新世早期和全新世晚期的区域温差图; 2）改进IPWP地区全新世晚期和早期以及末次冰期的区域温度校准和温跃层深度重建;将IPWP内上层水柱的垂直廓线与环流变化（印度尼西亚环流的强度和结构）、ENSO状态和澳大利亚-亚洲季风风和降水模式联系起来。

We propose to reconstruct the Holocene and Last Glacial Maximum (LGM) thermocline profiles of the Indo-Pacific Warm Pool (IPWP) region and to investigate relations with the El Niño-Southern Oscillation (ENSO) and Australian-Asian monsoon systems. Planktonic foraminiferal stable isotope and Mg/Ca analyses of surface and thermocline dwelling planktonic foraminifers as well as assemblage counts in 25 cores from ODP, R/V „Sonne“ and R/V „Marion Dufresne“ cruises will provide a comprehensive regional coverage of the IPWP that will allow three-dimensional thermocline reconstructions for three critical timeslices (Recent, early Holocene precession maximum, and LGM). Our main objectives are 1) to estimate LGM and early Holocene temperatures and salinities of sea surface and thermocline waters in the IPWP region and to compute regional maps of temperature differences between the LGM, the early Holocene and the late Holocene; 2) to improve regional temperature calibrations and reconstructions of thermocline depths in the IPWP region for the late and early Holocene and LGM and 3) to relate the vertical profiles of the upper water column within the IPWP to circulation changes (intensity and structure of the Indonesian Throughflow), state of ENSO and Australian-Asian monsoonal wind and precipitation patterns.