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

合作研究：与地球物理和海洋学数据相关的巴拿马盆地热流和热液输送

基本信息

批准号：
1353114
负责人：
Robert Lowell
金额：
$ 11.16万
依托单位：
Virginia Polytechnic Institute and State University
依托单位国家：
美国
项目类别：
Standard Grant
财政年份：
2014
资助国家：
美国
起止时间：
2014-04-01 至 2017-03-31
项目状态：
已结题

来源：
https://www.nsf.gov/awardsearch/showAward?AWD_ID=1353114&HistoricalAwards=false
关键词：
Collaborative Research Heat Flow Hydrothermal

项目摘要

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.

研究哥斯达黎加裂谷轴与海洋钻井程序504B之间的水热热和质量通量的研究旨在有助于开发集成的地壳 - 热热远洋循环模型。热流将沿着300公里长的走廊进行测量，这是一个称为Oscar的大型多学科的多机构项目的组成部分（Oscar（Oscar和地震表征），对轴向脊的热液散热的散热和改变）。结合海洋学羽状映射，将指导在扩散轴处评估水热通量，新的热流量结果将显示导电通量如何随着板的年龄而变化，特别是从聚焦，高速率流向弥漫性，下磁通的过渡，循环发生。这是大海山脊研究中的一个长期问题。将评估地下室结构中断的影响对当地热流的影响。美国科学家将与领导主要项目的英国和德国同事紧密合作。加热习得的添加可以解决Interidge第三十年计划的主题 - 地壳和深海之间的化学交换。一名女性研究生，其主要培训是在分析建模中进行的，将获得海上数据获取，接触国际科学家的经验，并深入了解具有仅表面数据来限制地下流量模型的优势和局限性。