1 / 4

M Gregg ONR-Funded Cruises 1971-2006

M Gregg ONR-Funded Cruises 1971-2006. Gibraltar Experiment 1985-86. Acoustic backscatter of huge overturning billows on the sheared interface above Med water descending on the west side of the sill. Microstructure sampling. Bosphorus 1994. Profiling from RV Bilim. Velocity vectors in

vernon-fletcher
Download Presentation

M Gregg ONR-Funded Cruises 1971-2006

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. M Gregg ONR-Funded Cruises 1971-2006

  2. Gibraltar Experiment 1985-86 Acoustic backscatter of huge overturning billows on the sheared interface above Med water descending on the west side of the sill Microstructure sampling

  3. Bosphorus 1994 Profiling from RV Bilim Velocity vectors in 2-layer flow overlaid on acoustic image from northern end of channel Dots mark microstructure profiles

  4. Internal Waves & Mixing in the Aegean 2004 • Objectives • Toimprove understanding of internal wave interactions with steep topography in a region with weak tides • To quantify mixing in littoral regions produces by background internal waves, i.e. those not produced by local tidal currents • Preliminary Results • An intermittent but prominent internal tide was observed, contrary to expectations • Near-inertial motions had amplitudes similar to the internal tides • High-frequency internal waves had spectral shapes similar to Garrett & Munk but much smaller amplitudes • Mixing was concentrated near the sloping bottom, particularly around a small sea mount – maximum values were 0.001 m2/s • Internal waves and mixing increased with surface winds during a rapid change from summer to winter conditions. Major Performers: APL/UW (Gregg/Alford) Hellenic Centre for Marine Research (Kontoyiannis), Univ. Aegean (Zervakis)

More Related