Dr. Tetjana Ross Colloquium

Fri. Nov. 19 12:30 PM - Fri. Nov. 19 01:20 PM
Contact: Andrea Wiebe
Location: via Zoom

Dr. Tetjana Ross, Research Scientist

Institute of Ocean Sciences

Fisheries and Oceans Canada, Sidney, BC

 

Listening to the Ocean in Colour: Forays into High-Frequency Broadband Acoustics

For nearly three quarters of a century oceanographers have used sonar technology to learn about the ocean interior. However, using standard narrowband sonar it is difficult to distinguish between different sources of scattering. This seminar will explore the idea of using acoustic colour (or scattering of sound as a function of frequency) to discriminate between biotic (different taxa of zooplankton and fish) and abiotic (double-diffusive and turbulent microstructure) sources of scattering in a number of different experiments.

 

Bio: Tetjana Ross is a Research Scientist at Fisheries and Oceans Canada. She is a physicist by training and an observational oceanographer, focusing on assessing change in the Northeast Pacific. She mostly observes the ocean by sending robots out to do the work. These robots, autonomous ocean floats and gliders, send back observations of ocean temperature, salinity, oxygen, chlorophyll and acoustic scattering, which she uses to monitor marine heatwaves, study eddies carrying coastal waters far into the deep ocean and assess long term acidification and oxygen loss in the Northeast Pacific. Prior to joining DFO in 2015, Dr. Ross was a professor in the Department of Oceanography and College of Sustainability at Dalhousie University.

 

Missed the talk? Watch it here: https://uwcloud.uwinnipeg.ca/s/w4gFwQLEn6nNfkD