Contribution of heat outputs from high- and low-temperature hydrothermal sources to the neutrally buoyant plume at the TAG hydrothermal mound, Mid-Atlantic Ridge

Shusaku Goto, Toshitaka Gamo, Hitoshi Chiba, Kantaro Fujioka, Kyohiko Mitsuzawa

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

We provide an estimation of the heat output necessary to generate the neutrally buoyant plume above the TAG hydrothermal mound, Mid-Atlantic Ridge, located at 26°N, using a model of plume rise in a density-stratified environment with crossflow. The estimated heat output is 460 ± 40 MW. Previous studies have estimated that the heat outputs from high-temperature hydrothermal discharge and low-temperature diffuse flow at the TAG hydrothermal mound are 90 ± 20 MW and at least 780 MW, respectively. Consequently, the contribution of diffuse flow to make the neutrally buoyant plume is 370 ± 60 MW, which accounts for approximately 80% of the heat output to the neutrally buoyant plume. As this contribution is less than 50% of the total heat output from the diffuse flow, it is likely that more than 50% of the heat output from the diffuse flow dissipates in the ambient current.

Original languageEnglish
Pages (from-to)1141-1146
Number of pages6
JournalEarth, Planets and Space
Volume59
Issue number10
DOIs
Publication statusPublished - Jan 1 2007

Keywords

  • Heat output
  • High-temperature hydrothermal discharge
  • Low-temperature diffuse flow
  • Neutrally buoyant plume
  • TAG hydrothermal mound

ASJC Scopus subject areas

  • Geology
  • Space and Planetary Science

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