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While the 91-day model simulation suggests that particles released in the upper bay (red) tend to stay within the bay, accumulating predominantly in the eastern region, it is crucial to recognize this finding's limitations. The average residence time of the Chesapeake Bay system is significantly longer, ranging from 110 to 264 days with an average of 180 days. Therefore, further simulations with longer durations are essential to draw definitive conclusions about the long-term fate of such particles. |
Particles released from the Pocomoke River (dark Blue), and CB main stem lower bay (red) also demonstrate a preference for staying within the bay, with accumulations concentrated in the lower eastern region. This localized accumulation highlights the significant contribution of the Pocomoke River to microplastic concentration in this area. |
Particles originating from the Potomac River (purple) exhibit
an interesting behavior, becoming trapped within the East River. This localized trapping phenomenon warrants further investigation to understand the specific mechanisms at play and its implications for long-term particle transport and fate within the ChesapeakeBay system. |
Particles released in the Potomac (purple), Rappahannock (green), York (orange), and James Rivers (pink) were identified as the primary contributors to the overall influx of microplastics reaching the ocean. This finding underscores the crucial role played by these major waterways in transporting microplastic pollution from land to sea. Understanding the specific contributions of each river is crucial for developing targeted mitigation strategies and effectively tackling the issue of microplastic pollution in the bay and beyond. |
Particles that successfully reach the mouth of the Chesapeake Bay (light blue) exhibit a strong tendency to continue their journey out to the ocean. |
Microplastics leaving the Chesapeake Bay exhibit a distinct southward dispersion pattern upon entering the ocean. This southward movement is a direct consequence of the Coriolis effect, a phenomenon that causes fluids in the Northern Hemisphere to deflect to the right, resulting in a net southward flow. This southward trajectory highlights the potential for long-range transport of microplastics originating from the Chesapeake Bay and underscores the need for broader regional and international collaboration to address the issue of microplastic pollution. |
Virginia Beach, a renowned coastal destination, faces a significant threat from microplastic pollution. This study identifies three major rivers - York (orange), Potomac (purple), and Rappahannock (green) - as the primary contributors to microplastic pollution in Virginia Beach. Their proximity to the city and substantial flow volumes make them crucial conduits for transporting microplastics from inland sources to the ocean, ultimately impacting Virginia Beach and its surrounding marine environment. Understanding the specific role of each river is critical for developing targeted mitigation strategies and ensuring the long-term health of the Virginia coastline. |
Authors
Julia Abrão Teixeira
Graduate Student | Coastal & Ocean Processes Virginia Institute of Marine Science | College of William & Mary [email protected] Andrews Hall 234C 1309 Greate Rd, Gloucester Point, VA 23062 |
Ricardo Utzig Nardi
Graduate Student | Coastal & Ocean Processes Virginia Institute of Marine Science | College of William & Mary [email protected] Andrews Hall 234F 1309 Greate Rd, Gloucester Point, VA 23062 |
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