期刊
GEOLOGY
卷 32, 期 8, 页码 725-728出版社
GEOLOGICAL SOC AMERICA, INC
DOI: 10.1130/G20387.1
关键词
fluid flow; heat flow; seamounts; numerical model; mass flux
类别
Seamounts contribute to globally significant hydrothermal fluxes, but the dynamics and impacts of fluid flow through these features are poorly understood. Numerical models of coupled heat and fluid flow illustrate how seamounts induce local convection in the oceanic crust. We consider idealized axisymmetric seamounts and calculate mass and heat fluxes by using a coupled heat- and fluid-flow model. By using P. Wessel's global database of similar to15,000 seamounts identified through satellite gravimetry, we estimate that the mass flux associated with seamounts is similar to10(14) kg/yr, a number comparable to estimated regional mass fluxes through mid-ocean ridges and flanks. In addition, the seamount-generated advective heat flux may be locally significant well beyond the 65 Ma average age at which advective lithospheric heat loss on ridge flanks ends. These flows may be important for facilitating geochemical exchange between the crust and ocean and may affect subsealloor microbial ecosystems.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据