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CATEGORIES:Academics,Lectures/Seminars
DESCRIPTION:Environmental Engineering Graduate Seminar\n\nGangfeng Ma\, Ph.
 D.\, Senior Coastal Scientist at DHI\n\nAbstract:\n\nDeep-sea mining emerge
 s as a promising yet controversial frontier for mineral extraction\, garner
 ing global scrutiny for its profound environmental and societal implication
 s. A paramount concern is the dispersion of sediment plumes and their casca
 ding effects on deep-ocean biodiversity and ecosystem integrity. These plum
 es typically unfold in three distinct phases: the near-field discharge\, bu
 oyancy-driven phase\, and far-field passive transport. This study employs t
 hree-dimensional hydrodynamic and mud transport (MT) modeling to investigat
 e far-field benthic and mid-water plume dispersion and its potential reperc
 ussions for deep-sea ecosystems. Near-field mid-water plumes were simulated
  using the integral jet model (Jirka\, 2004)\, which resolves steady-state 
 plume trajectories by balancing conservation equations for mass flux\, mome
 ntum\, salinity\, temperature\, and suspended sediment concentration amid a
 mbient conditions. Benthic plume sources were parameterized via a dredger m
 odel\, informed by sediment spill rates from the Polymetallic Collector Veh
 icle (PCV). To capture flocculation's influence on plume evolution\, a popu
 lation balance-based flocculation module was seamlessly integrated into the
  MT framework\, enabling nuanced predictions of particle aggregation and se
 ttling dynamics.\n\nBio:\n\nDr. Gangfeng Ma is a Senior Coastal Scientist a
 t DHI Water & Environment and global lead in RD&I focus area “water-resilie
 nt society”. Prior to joining DHI\, Dr. Ma served as an Associate Professor
  in the Department of Civil and Environmental Engineering at Old Dominion U
 niversity\, where he specialized in coastal engineering\, surface wave dyna
 mics\, hydrodynamic modeling\, and sediment transport. He received his Ph.D
 . from the Center for Applied Coastal Research at the University of Delawar
 e.
DTEND:20251013T200000Z
DTSTAMP:20260420T132629Z
DTSTART:20251013T190000Z
GEO:47.120636;-88.546486
LOCATION:Great Lakes Research Center (GLRC)\, 202
SEQUENCE:0
SUMMARY:Modelling Sediment Plume Dynamics and Sediment Flocculation Associa
 ted with Deep-Sea Mining
UID:tag:localist.com\,2008:EventInstance_50949281055268
URL:https://events.mtu.edu/event/modelling-sediment-plume-dynamics-and-sedi
 ment-flocculation-associated-with-deep-sea-mining
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