Dal Events

Oceanography Seminar Series

Tue, 22 Sep 2026 14:45:00 GMT

Dr. Manon Laget
��tv University, Oceanography

Title:
"In situ imaging sheds light on Phaeocystis blooms and carbon fluxes in the Labrador Sea"

Room Location: C244, LSC

In-person and on Teams.

Microsoft Teams meeting

Join: https://teams.microsoft.com/meet/256856590677066?p=rCbmHmotqf3CXdZMu1

Meeting ID: 256 856 590 677 066

Passcode: m5eT6ya7

Physical Oceanography & Meteorology Seminar

Fri, 25 Sep 2026 18:00:00 GMT

Marek Stastna
University of Waterloo

Title:
“That other nonlinearity: how the nonlinear equation of state modifies winter time dynamics in Canadian lakes”

Location:
Riley Room O3652
LSC, Oceanography wing

Abstract:
It is well known that the material derivative leads to a host of nonlinear behaviours in fluid flows. From the steepening of waves as they shoal, to the turbulent cascade that controls the exchange of momentum across scales the effects of this simple to write down bit of mathematics are readily observable in the field. There is a second, weaker nonlinearity in the governing equations that manifests in certain special situations. This nonlinearity is contained in the buoyancy term, through the equation of state that relates density to the temperature, salinity and pressure. I will present examples of the manifestations of this nonlinearity in wintertime freshwater lakes. I will demonstrate that in this quiet regime the nonlinearity is essential, and leads to strange physics and dynamics that remains only partially understood. I will present results of large direct numerical simulations, as well analysis tools that have been developed to track some of these phenomena. I will conclude with some thoughts about how turbulence should be parametrized in these regimes.

There will be pizza!

If anyone would like to meet with Marek while he is in town, please contact Ruth at Ruth.Musgrave@dal.ca.

The next POMS seminar will be on October 9th, from our very own Hana Hourston.

Oceanography Seminar Series

Tue, 29 Sep 2026 14:45:00 GMT

Dr. Kristine Buenafe
University of Queensland

Title:
"Conserving our oceans in a ‘climate-smart’ way"

Room Location: C244, LSC

In-person and on Teams (see link below).

Microsoft Teams meeting

Join: https://teams.microsoft.com/meet/218822805225897?p=ISt6gowTrrYvK0IudM

Meeting ID: 218 822 805 225 897

Passcode: Uf6Rc9aH