Estimation of oceanic hydrothermal heat flux from heat flow and depths of midocean ridge seismicity and magma chambers

Aristeo M. Pelayo*, Seth Stein, Carol A. Stein

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

34 Scopus citations

Abstract

The difference between the heat flow predicted by thermal models of the lithosphere and that measured at the seafloor can be used to estimate the cooling by hydrothermal circulation. However, this approach may yield an overestimate because measurements in thinly sedimented young crust are typically made at topographic lows where hydrothermal circulation may systematically lower heat flow. To circumvent this bias we estimate the cooling using the depths of midocean ridge earthquakes and magma chambers in addition to heat flow data. The results indicate deeper hydrothermal circulation at slow spreading ridges, and higher near‐axial hydrothermal heat loss at fast spreading ridges. The predicted global hydrothermal heat flux is ∼80% of that for models constrained only by heat flow.

Original languageEnglish (US)
Pages (from-to)713-716
Number of pages4
JournalGeophysical Research Letters
Volume21
Issue number8
DOIs
StatePublished - Apr 15 1994

ASJC Scopus subject areas

  • Geophysics
  • Earth and Planetary Sciences(all)

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