All posts by jthomson

SWIFT runs complete

Yesterday we completed the final set of SWIFT runs, measuring surface turbulence, waves, winds, and currents through the inlet. Below is the composite of all tracks from 26 Apr to 21 May, color scaled by turbulent dissipation rate. Across all conditions, there is consistent enhanced dissipation at the channel outlets (old and new), as well as over the shoals. Other, more localized features, such as enhanced turbulence crossing fronts (and dye plumes!) are evident in the daily runs. Preliminary data products and summaries are at
http://herschel.apl.washington.edu/darla/SWIFT/

Surface turbulent dissipation rate from SWIFT drifters.

 

SWIFT drifter results to date

Here is a composite image from 12 days of SWIFT drifter runs through the inlet spanning many different tide/wind/wave conditions.  The color scale is the surface turbulence dissipation rate, which is generally correlated with strong wave-current interactions in the two channels.  Preliminary turbulence metrics and bulk wind, wave, and current values are posted for each day at http://herschel.apl.washington.edu/darla/SWIFT/, along with an xls  table listing available data.  More to come!

APL-UW drifter tracks thru 9 May.