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SUMMARY:Microplastic Hydrodynamics: Insights from Laboratory Modeling and 
 In-Situ Sampling
DTSTART:20250328T121500
DTEND:20250328T131500
DTSTAMP:20260412T172928Z
UID:e09b47c3cb73977da1cfd5ec162cdab119ccf1d88f5ec49786b7c091
CATEGORIES:Conferences - Seminars
DESCRIPTION:Shooka Karimpour\nAbstract\nMicroplastics\, plastic debris sma
 ller than 5 mm\, have become ubiquitous in aquatic systems\, appearing in 
 both freshwater and marine systems\, from densely populated regions to dee
 p sea sediments and the Arctic.  While there are numerous efforts across 
 the globe on MP detection in various aquatic matrices\, these efforts rema
 in resource-intensive and often lack standardization. These challenges\, c
 ombined with the complexity of regional and global sampling\, make MP quan
 tification highly uncertain. Although the presence of MP contaminants in w
 ater and sediment is governed by complex physical (and biochemical) proces
 ses\, many sampling and detection efforts overlook these dynamics. Formula
 ting these processes is highly beneficial for understanding the presence a
 nd fate of MPs but also challenging due to the variability in MP character
 istics\, including shape\, size\, and density.\n\nThis presentation will e
 xplore the competing physical mechanisms driving MP transport in aquatic s
 ystems\, drawing on analogies with sediment transport. We will discuss our
  findings on the motion of MP particles and their interactions with the su
 rrounding fluid across multiple scales—particle-scale\, near-field\, and
  far-field. Insights from laboratory experiments\, high-fidelity computati
 onal modeling (including Large Eddy Simulation and Direct Numerical Simula
 tion)\, and in-situ sampling will be presented. In collaboration with Cana
 dian environmental agencies\, these findings are informing the development
  of standardized modeling and sampling frameworks to enhance MP detection 
 and prediction.\n\nShort bio\nDr. Shooka Karimpour is an Associate Profess
 or in the Department of Civil Engineering at York University\, Toronto. Sh
 e earned her Ph.D. in Environmental Fluid Dynamics from McGill University 
 in 2015. Her expertise lies in developing and applying hydro-environmental
  models to investigate mixing\, transport\, and entrainment in multiphase 
 flows. Her current research focuses on turbulence-induced transport of sed
 iments and contaminants\, in collaboration with Environment and Climate Ch
 ange Canada and the Ministry of the Environment\, Conservation\, and Parks
 . Her work has been published in leading journals such as Journal of Fluid
  Mechanics\, and she has received national and international recognition\,
  including the Best CSCE Hydrotechnical Paper Award (2018) and York Univer
 sity’s Research Award (2022).\n\nSandwiches are offered at the end of th
 e seminar.\n 
LOCATION:GR A3 30 https://plan.epfl.ch/?room==GR%20A3%2030 https://epfl.zo
 om.us/j/64899712041
STATUS:CONFIRMED
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