Collaborative Research: A Paleogene Equatorial Pacific Transect

9634141莱尔这些来自密歇根大学和爱达荷州的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，与现代相比，这一时期全球异常温暖。 他们将检查沉积在横跨古近纪赤道的南北断面上的沉积物，以确定风载粘土和淤泥的来源（北美与亚洲），这将为热带间辐合带在古代大气中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“始新世热屋”条件的模型。 除了这些研究课题外，这次航行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具体地点的选择，以便在D/V JOIDES Resolution的拟议航行中更详细地研究这一问题，深-由美国国家科学基金会通过NSF海洋钻探计划协调的一个成员国国际财团的海洋钻探。 ***

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. ***