Collaborative Research: A Paleogene Equatorial Pacific Transect

这些来自密歇根大学和爱达荷州博伊西州立大学的研究人员将在东太平洋进行一次研究巡航，以调查古近纪时期的详细气候和海洋学条件，这是一个与现代相比全球异常温暖的时期。他们将检查沉积在横跨古近纪赤道的南北向样带上的沉积物，以确定风载粘土和淤泥的来源（北美与亚洲），这将为古大气中热带辐合带的位置提供直接证据。他们还将检查沉积物中的化石，以评估海洋条件，这些数据将用于限制全球变暖的“始新世温室”条件模型。除了这些研究课题之外，这次巡航期间收集的地震反射和沉积物岩心数据将用于指导未来深海钻探的特定地点的选择，以便在D/V JOIDES Resolution的拟议巡航中更详细地研究这个问题，这艘船为一个由国家科学基金会通过国家科学基金会海洋钻探计划协调的成员国国际联盟进行深海钻探。＊＊＊

9634141 Lyle These investigators from University of Michigan and Boise State University in Idaho will undertake a research cruise in the eastern Pacific Ocean to investigate detailed climatic and oceanographic conditions during the Paleogene period, a time of exceptional worldwide warmth compared to modern times. They will examine sediments deposited in a N-S transect across the Paleogene equator to determine the source (North America vs Asia) of wind-borne clay and silt, which will provide direct evidence of the location of the Inter-Tropical Convergence Zone in the ancient atmosphere. They will also examine fossils in the sediments to evaluate oceanographic conditions, and these data will be used to constrain models of the "Eocene hot house" conditions of worldwide warmth. In addition to these research topics, the seismic reflection and sediment core data collected during this cruise will be used to guide selection of specific sites for future deep ocean drilling to study this problem in more detail on a proposed cruise of D/V JOIDES Resolution, a vessel which conducts deep-ocean drilling for an international consortium of member nations coordinated by the National Science Foundation through the NSF Ocean Drilling Program. ***