High-Resolution Coastal Record of Western Equatorial Pacific and Adjacent Highland Climate During the Last Glacial Cycle

ATM-952664 Prentice，Michael L.新汉普郡大学标题：最后一次冰川周期期间赤道西太平洋和邻近高地气候的高分辨率海岸记录本研究的目标是得到最后一次冰川周期期间西太平洋暖池地表和高海拔气候变化的高分辨率耦合记录。记录将来自新几内亚西北海岸的森德拉瓦西湾。由于其位置，森德拉瓦西湾的代理记录同时监测WPWP核心的温度和水文以及直接毗邻的Irian Jaya高地的温度和降水变化。该计划涉及地震勘探，并将收集活塞岩心。WPWP的温度和降水变化将利用有孔虫同位素记录加以补充，并辅之以浮游有孔虫普查数据的传递函数分析得出的SST估计。高海拔古气候变化对高海拔冰川的程度以及植被带的组成和海拔造成了显着的波动。冰川、植被和气候变化也将被重建。通过填补热带古气候重建中的一个大的时空空白，该项目将有助于理解全球热带气候系统在亚千年时间尺度上的大规模全球变化中的作用。

Abstract ATM-952664 Prentice, Michael L. University of New Hampshire Title: High-Resolution Coastal Record of Western Equatorial Pacific and Adjacent Highland Climate During the Last Glacial Cycle The goal of this study is to derive a high-resolution coupled record of surface and high-altitude climate change in the western Pacific warm-pool (WPWP) over the last glacial cycle. The record will come from Cenderawasih Bay on the northwest coast of New Guinea. Because of its position, proxy records in Cenderawasih Bay concurrently monitor the temperature and hydrology of the core WPWP as well as changes in temperature and precipitation on the directly adjacent Irian Jaya highland. The program involves a seismic survey and piston cores will be collected. WPWP temperature and precipitation changes will be distinguished using foraminiferal isotope records supplemented by SST estimates derived from transfer-function analysis of planktonic foraminiferal census data. High-altitude paleoclimate changes caused significant fluctuations in the extent of high-altitude glaciation as well as the composition and elevation of vegetation zones. Glacier, vegetation, and climate changes also will be reconstructed. By filling a large spatial and temporal gap in tropical paleoclimate reconstructions, this project will contribute to understanding the role of the global tropical climate system in large-magnitude global changes on sub-millennial timescales.***