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Oceanic Frontogenesis.

James C McWilliams1

  • 1Department of Atmospheric and Oceanic Sciences, University of California, Los Angeles, California 90095-1565, USA;

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PubMed
Summary
This summary is machine-generated.

Frontogenesis sharpens oceanic density gradients through fluid dynamics. This process involves a positive feedback loop that accelerates frontal sharpening until instability causes mixing.

Keywords:
density filamentdensity frontfrontal arrestfrontogenesisinstabilitymixingsecondary circulation

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Area of Science:

  • Fluid dynamics
  • Oceanography
  • Geophysics

Background:

  • Frontogenesis involves rapid sharpening of horizontal density gradients and velocity shears.
  • It is a positive feedback process driven by ageostrophic secondary circulation.
  • This circulation accelerates sharpening until arrested by frontal instability and turbulent mixing.

Purpose of the Study:

  • To survey well-known types of oceanic frontal phenomena.
  • To assess the impacts of these phenomena on oceanic system functioning.
  • To envision future research directions in frontogenesis.

Main Methods:

  • Review of fluid-dynamical processes in frontogenesis.
  • Survey of oceanic frontal phenomena.
  • Assessment of impacts on oceanic systems.

Main Results:

  • Frontogenesis is a key process in creating sharp oceanic gradients.
  • Oceanic fronts significantly impact marine ecosystems and ocean circulation.
  • Frontal instability and turbulent mixing are crucial arrest mechanisms.

Conclusions:

  • Frontogenesis is a fundamental oceanic process with significant system-wide impacts.
  • Further research is needed to fully understand and predict frontal dynamics and their consequences.