Seminar “Energetic Turbulent Marine Island Wakes”

The scientific seminar titled “Energetic Turbulent Marine Island Wakes” was given by Professor Pat Welch from the College of Earth, Ocean, and Atmospheric Sciences, Oregon State University (USA) on 21th November as an extended activity of the 20 Years of Oceanology Bachelor Program.

Prof. Pat Welch is presenting the seminar on “Energetic Turbulent Marine Island Wakes”.

Interesting results on horizontal distribution of energetic turbulent wake and structures of sub-mesoscale eddies about Palau Island in the tropical Western Pacific region were presented. Tracked velocity components following drifters and evolution of island wake structures using HF radar observations were visualized to students. Vertical profile of microscale turbulence in the oceanic bottom boundary layer measured by instruments on ROV systems on a submarine bank provided an insight into turbulent dissipation in these sub-mesoscale eddies and flows.

Eddy velocity components in the drifters’ reference frame.
The estimated curvature of the eddy.

Oceanology students were also presented information on the Nautilus Live Ocean Exploration Trust Program (nautiluslive.org) which conducts scientific exploration and broadcasts live-streams of the seafloor observation. International students could also find opportunity for short-time internships on the vessel to join these fascinating ocean explorations.

Nautilus (“Ốc anh vũ” in Vietnamese) image captured and live-streamed by the Nautilus Live Ocean Exploration Trust Program (nautiluslive.org).

With an open scientific ambiance, the seminar was a precious opportunity for Oceanology students to approach recent research on island wake, sub-mesoscale eddy structure, as well as modern observing systems on the subject, enriching their understanding of oceanic flows and turbulence.

Prof. Pat Welch with students and lecturers of the Oceanology, Meteorology and Hydrology department.

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