Articles | Volume 25, issue 2
https://doi.org/10.5194/npg-25-267-2018
https://doi.org/10.5194/npg-25-267-2018
Research article
 | 
04 Apr 2018
Research article |  | 04 Apr 2018

Connection between encounter volume and diffusivity in geophysical flows

Irina I. Rypina, Stefan G. Llewellyn Smith, and Larry J. Pratt

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Interactive discussion

Status: closed
Status: closed
AC: Author comment | RC: Referee comment | SC: Short comment | EC: Editor comment
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Peer-review completion

AR: Author's response | RR: Referee report | ED: Editor decision
AR by Irina I. Rypina on behalf of the Authors (30 Jan 2018)  Author's response    Manuscript
ED: Referee Nomination & Report Request started (08 Feb 2018) by Ana M. Mancho
RR by Anonymous Referee #1 (09 Feb 2018)
RR by Anonymous Referee #2 (20 Feb 2018)
ED: Publish subject to technical corrections (20 Feb 2018) by Ana M. Mancho
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Short summary
Trajectory encounter volume – the volume of fluid that passes close to a reference fluid parcel over some time interval – has been recently introduced as a measure of mixing potential of a flow. We derived the analytical relationship between the encounter volume and diffusivity, which is the most commonly used characteristic of turbulent eddy diffusion. When applied to the altimetric velocities in the Gulf Stream region, the method illuminated transport properties of the Gulf Stream rings.