College of Marine Sciences, Shanghai Ocean University, Shanghai 201306, PR China.
School for Marine Science and Technology, University of Massachusetts-Dartmouth, New Bedford, MA 02744, USA.
Mar Pollut Bull. 2020 May;154:111048. doi: 10.1016/j.marpolbul.2020.111048. Epub 2020 Mar 9.
Physical dynamics of Harmful Algal Blooms in Massachusetts Bay in May 2005 and 2008 were examined by the simulated results. Reverse particle-tracking experiments suggest that the toxic phytoplankton mainly originated from the Bay of Fundy in 2005 and the western Maine coastal region and its local rivers in 2008. Mechanism studies suggest that the phytoplankton were advected by the Gulf of Maine Coastal Current (GMCC). In 2005, Nor'easters increased the cross-shelf surface elevation gradient over the northwestern shelf. This intensified the Eastern and Western MCC to form a strong along-shelf current from the Bay of Fundy to Massachusetts Bay. In 2008, both Eastern and Western MCC were established with a partial separation around Penobscot Bay before the outbreak of the bloom. The northeastward winds were too weak to cancel or reverse the cross-shelf sea surface gradient, so that the Western MCC carried the algae along the slope into Massachusetts Bay.
2005 年和 2008 年 5 月马萨诸塞湾有害赤潮的物理动力学通过模拟结果进行了研究。反向粒子跟踪实验表明，有毒浮游植物主要来自芬迪湾在 2005 年和 2008 年的缅因州西部沿海地区及其当地河流。机制研究表明，浮游植物由缅因湾沿岸流（GMCC）输送。2005 年，东北风暴增加了西北大陆架上的跨架表面抬升梯度。这加强了东、西 MCC，在从芬迪湾到马萨诸塞湾的形成了一个强大的沿架流。2008 年，东、西 MCC 在赤潮爆发前在彭布罗克湾附近部分分离。东北风太弱，无法抵消或逆转跨架海面梯度，因此西部 MCC 将藻类沿斜坡带入马萨诸塞湾。
