Climate Variability of Northeast Pacific/Western North America: Sub-millennial Scale Marine and Terrestrial Evidence from Santa Barbara Basin

Heusser, Linda E. Heusser & Heusser, Inc。题目：东北太平洋/北美西部的气候变率：来自圣巴巴拉盆地的亚千年尺度海洋和陆地证据该奖项支持一个项目，该项目旨在研究末次冰期周期开始时两次主要变暖事件期间的亚千年尺度自然气候变率。该项目侧重于从Santa Barbara盆地的ODP Site 893回收的快速沉积沉积物（100cm/kyr）。该方法将使用相同沉积物样本的子集来检查海洋和陆地气候变化指标，从而允许直接比较这两个相互关联的生态系统对全球气候变化的响应速率和幅度的变化。海洋浮游生物（有孔虫和放射虫）和花粉沉积在65至108kyr之间，大约100- 200年的间隔将进行分析。这项研究的结果将导致对当前气候变化模式的更严格验证，并提高我们对低频率和高频气候过程之间相互作用以及相关强迫机制的理解。

Abstract ATM-9633642 Heusser, Linda E. Heusser & Heusser, Inc. Title: Climate Variability of Northeast Pacific/Western North American: Sub-millennial Scale Marine and Terrestrial Evidence from Santa Barbara Basin This award supports a project that is designed to study sub- millennial scale natural climate variability during two major warm events at the beginning of the last glacial cycle. The project focuses on the rapidly deposited sediments ( 100cm/kyr) recoveped from ODP Site 893 in Santa Barbara Basin. The approach will be to examine both marine and terrestrial indicators of climate change using subsets of the same sediment samples, thus allowing for direct comparison of changes in the rate and amplitude of the response of these two interrelated ecosystems to global climate change. Marine plankton (foraminifera and radiolaria) and pollen in sediments deposited between 65 to 108kyr at approximately 100- 200 year intervals will be analyzed. Results of this study will lead to more rigorous validation of models of present climate change and improvement in our understanding of the interaction between low- and high-frequency climate processes and associated forcing mechanisms.