Abrupt Climatic Transitions: Surface To Deep-Water Response From High-Resolution Sediment Records, Santa Barbara, California

这项研究的目的是更好地了解的幅度，深度和时间的变化在上中层沃茨关闭南部加州在十年到千年尺度的气候变化和测试的关系，沿着加州边缘的变化与全球气候信号与晚第四纪冰川消退事件。 热带变化先于高纬度变化的假设将通过比较中间沃茨的通风变化记录与地表水记录来检验。 该研究将侧重于众所周知的快速气候变化的过渡和间隔，例如1A和1B终端以及3号、4号和5号间日珥。 将在从圣巴巴拉盆地采集的活塞岩心的关键间隔内以十年尺度分辨率进行多重代用指标分析，包括底栖和南极有孔虫的稳定同位素分析、底栖和南极有孔虫的Mg/Ca分析以及选定南极有孔虫的盘绕比。

The objectives of this research are to better understand the magnitude, depth and timing of changes in upper intermediate waters off southern California in relation to decadal to millennial scale climate change and test the relationship of changes along the California margin to global climate signals associated with deglaciation events of the late Quaternary. The hypothesis that tropical changes preceded high-latitude changes will be tested by comparing records of ventilation changes in intermediate waters with surface water records. The study will focus on well known transitions and intervals of rapid climate change, such as Terminations 1A and 1B and interstadials 3, 4, and 5. Multiproxy analyses, including stable isotope analyses of benthic and planktic foraminifers, Mg/Ca analyses of benthic and planktic foraminifers and coiling ratios of selected planktic foraminifers will be done at decadal-scale resolution across the critical intervals in piston cores recovered from the Santa Barbara Basin.