Collaborative Research: Heat Flow and Hydrothermal Transport in the Panama Basin Linked with Geophysical and Oceanographic Data

对哥斯达黎加裂谷轴与大洋钻探计划孔504 B之间的地壳与海洋之间的热液热量和质量通量进行调查，旨在帮助建立一个综合的地壳-热液-海洋环流模型。将沿沿着300公里长的走廊测量热流，这是一个大型多学科、多机构项目的一个组成部分，该项目称为OSCAR（轴向海脊热液流体散热和蚀变的海洋学和地震学特征）。结合海洋学羽流绘图，将指导评估热液通量在扩展轴，新的热流结果将显示如何传导通量随着板块年龄的变化，特别是在从集中，高速率流过渡到扩散，低通量环流发生。这是大洋中脊研究中一个长期存在的问题。研究人员将评估基底结构破坏对当地热流的影响。美国科学家将与领导主要项目的英国和德国同事密切合作。通过增加热流采集，可以处理国际大洋中脊协会第三个十年计划的一个主题-地壳与深海之间的热量和化学交换。一个女研究生，其主要培训是在分析建模将获得经验，在海上数据采集，接触国际科学家，并洞察到的优势和局限性，只有表面的数据来约束地下水流模型。

Investigation of hydrothermal heat and mass flux between the crust and the ocean between the Costa Rica Rift axis and Ocean Drilling Program Hole 504B is designed to aid in development of an integrated crust-hydrothermal-ocean circulation model. Heat flow will be measured along a 300 km long corridor as an integral component of a large multi-disciplinary, multi-institutional project called OSCAR (Oceanographic and Seismic Characterization of heat dissipation and alteration by hydrothermal fluids at an Axial Ridge). In combination with oceanographic plume mapping that will guide assessment of hydrothermal flux at the spreading axis, the new heat flow results will show how conductive flux varies as the plate ages, in particular where the transition from focused, high rate flow to diffuse, lower flux circulation occurs. This is a long-standing question in mid-ocean ridge studies. The influence of disrupted basement structure on local heatflow will be assessed.US scientists will work closely with UK and German colleagues that lead the main project. Addition of the heat flow acquisition enables addressing a main theme of the InterRidge Third Decade plan- heat and chemical exchange between the crust and the deep ocean. A female graduate student whose main training is in analytical modeling will gain experience in seagoing data acquisition, exposure to international scientists, and insight into the advantages and limitations of having surface-only data to constrain a subsurface flow model.