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Department of Fisheries Oceanography Seminar Announcement-Dr. Changsheng Chen

When: Wednesday, September 8, 2021
2:30 PM - 3:30 PM
Where: > See description for location
Description: The School for Marine Science and Technology
Department of Fisheries Oceanography
Seminar Announcement

"Potential Impacts of Offshore Wind Facilities on Regional Sea Scallop Larval Dispersal and Settlement over New England Shelf"

Dr. Changsheng Chen
Montgomery Charter Chair Professor
SMAST at UMass Dartmouth

Wednesday, September 8, 2021
2:30 pm to 3:30 pm
SMAST East, Rooms 101/102
Also Via Zoom

Funded by the Scallop RSA program, we have developed a wind turbine-resolving (up to ~1 m) coupled physical and scallop-IBM model for Sothern
New England Shelf (SNE), with a computational domain covering the regions of the shelf off MA, RI, Block Island Sound, and Long-Island Sound. Using
this model system, we have examined the impact of the offshore wind turbine generators (WTGs) deployment in the Vineyard Wind’s lease area of
OCS-A-0501 on the dispersal and settlement of scallop larvae in the region. The results show that local WTGs in a small area can produce small-scale
eddies and thus enhance turbulent mixing within and around the turbine area. The circulation change around the WTGs areas tends to increase the offshore
water transport, resulting in upwelling from the Great South Channel (GSC) to Nantucket Shoals. The comparison between the cases with and without
WTGs suggests that the wind farm development in the region could considerably change the larval abundance in SNE. The ongoing or proposed new
WTG deployments in other lease areas of the Mass and RI Waters will expand the turbine-covering area. What will the cumulative impact of these
wind farms on scallop larval dispersal look like? Both satellite-derived SST and models show that the northeast U.S. shelf experienced climate change-induced warming. The extreme warming at the shelf break off George Bank (GB) has intensified the cross-isobath water temperature gradient and enhanced the clockwise subtidal gyre over GB. This change has increased the larval retention rate over GB/GSC, facilitating enhanced productivity in the GB/GSC and SNE region. What degree could the future wind farm development influence the change of regional physical and habitat environments under changing climate conditions? Our ongoing modeling experiments are addressing these questions.
Zoom Link

Meeting ID: 937 5823 0260
Passcode: 426839

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Topical Areas: School for Marine Sciences and Technology, SMAST Seminar Series