The last deglacial sea-level and climatic changes. Coral Reef records in the south Pacific : Tahiti (French Polynesia) - IODP Expedition #310 -, Australian Great Barrier Reef - IODP Proposal #519: Potential of diagenetically altered corals for sub-seasona

最后一次冰期的时间和过程（23000 - 6000日历年BP - calyr BP）是理解大冰盖动力学及其对地球均衡的影响以及淡水通量与海洋、热盐环流之间的复杂关系的重要组成部分，因此，在晚更新世和全新世期间，全球气候。该提案与IODP第519号提案有关，该提案涉及塔希提岛和澳大利亚大堡礁的珊瑚礁记录，以确定最后一次冰川消退期间海平面上升、气候变率和珊瑚礁响应的过程。它包括：1)在IODP 0310“塔希提海平面”考察期间，从塔希提周围40至120米水深的37个孔中获得了超过600米的珊瑚礁岩心，并取得了出色的恢复。研究人员钻出了覆盖大部分（如果不是全部的话）最后一次消冰期的独特水平的残礁，因此证实了这些特征作为全球海平面突然上升和气候变化的独特档案的重要性。2)对塔希提岛珊瑚礁斜坡进行免费调查，3)在大堡礁进行现场调查巡航，以生成高分辨率的水深和地震数据，这些数据将用于为IODP钻井考察选择合适的目标，与IODP钻井提案#519的第2部分相对应。这一建议的总体科学目标有三个方面：建立末次冰期后海平面上升的过程。定义末次冰期太阳日照、海平面和大气CO2水平与今天不同时海温和海温的变化。c.分析末次冰期海平面和环境变化对珊瑚礁发育的影响，重点是环境变化的综合重建。

The timing and course of the last deglaclation (23.000-6,000 calendar years BP - cal. yr BP) are essential components for understanding the dynamics of large Ice sheets and their effects on Earth's isostasy as well as the complex relationship between freshwater fluxes to the ocean, thermohaline circulation and, hence, global climate during the Late Pleistocene and the Holocene. This proposal Is related to the IODP proposal #519 concerning the coral reef records of Tahiti and the Australian Great Barrier Reef to establish the course of sea-level rise, climate variability and reef response during the last deglaciatton. It includes : 1) the study of more than 600 m of reef cores with an exceptional recovery that were retrieved from 37 holes ranging from 40 to 120 m water depth around Tahiti during the IODP Expedition 0310 « Tahiti Sea Level ». Distinctive levels of relict reefs covering most, if not all, the last deglaciation were drilled and therefore confirmed the significance of these features as unique archives of abrupt global sea-level rise and climate change. 2) Complimentary investigations of the Tahiti reef slopes, and 3) a site survey cruise on the Great Barrier Reef to generate high resolution bathymetric and seismic data that will be used to select suitable targets for an IODP drilling expedition corresponding to the part 2 of the IODP drilling proposal #519. The general scientific objectives of this proposal are threefold :a. To establish the course of post-glacial sea-level rise during the Last Deglaclation .b. To define SSTs and SSSs variations during the Last Deglaciation when solar insolation, sea level, and atmospheric CO2 levels were different from today. c. To analyze the impact of sea-level and environmental changes on reef development during the Last Deglaciation, with a special emphasis on the comprehensive reconstruction of environmental changes.