The Golden Horn (Estuary) is a hotspot for marine pollution because of its close proximity to the Strait of Istanbul (Strait) with dense maritime traffic and high pollution risk of oil spill. Transport and fate of water and contaminants in Strait and Estuary are analyzed by three-dimensional numerical models. Eddies forming at the Golden Horn junction (Junction), either on a single layer or distributed over the entire water column, block the water exchange partly or entirely across the Junction. In case of an oil spill in adjacent waters, the size and distribution of eddies at Junction control the transport and fate of contaminants inside Estuary. Using twenty test cases, the exchange flows at Junction are classified in four types based on sea level difference between north and south boundaries of Strait and Reynolds number of surface flow. Eddies may prevent the natural water exchange between Strait and Estuary but also block the contaminants penetrating to Estuary. Under predominant conditions of mild and moderate southward net flow in Strait, surface waters enter Estuary. During very strong southward flow, Junction is blocked to Black Sea water and surface contaminants. Strait hydrodynamics control water exchange with Estuary through eddy formation. When horizontal eddies are formed at Junction, their size and distribution control the transport and fate of contaminants in branching inlets and estuaries by blocking the water exchange either entirely or partly in specific layers.

金角湾（Estuary）是海洋污染的一个热点，因为它靠近伊斯坦布尔海峡（Strait），海上交通繁忙，而且漏油的污染风险很高。通过三维数值模型分析了海峡和河口水和污染物的运移和命运。在金霍恩交汇处（交汇处）形成的涡流，无论是在单层上还是分布在整个水柱上，都会部分或全部阻塞交汇处的水交换。万一附近海域发生溢油事故，交界处涡流的大小和分布将控制河口内污染物的运输和去向。根据海峡海峡南北边界之间的海平面差异和地表雷诺数，使用二十个测试用例，将交汇处的交换流分为四种类型。涡流可能会阻止海峡与河口之间的自然水交换，但也会阻止污染物渗透到河口。在海峡轻度和中度南下净流量的主要条件下，地表水进入河口。在极强的向南流动期间，交界处被黑海水和表面污染物阻塞。海峡水动力通过涡流形成来控制与河口的水交换。当在连接处形成水平涡流时，它们的大小和分布会通过完全或部分阻止特定层中的水交换来控制分支入口和河口中污染物的运输和命运。地表水进入河口。在极强的向南流动期间，交界处被黑海水和表面污染物阻塞。海峡水动力通过涡流形成来控制与河口的水交换。当在连接处形成水平涡流时，它们的大小和分布会通过完全或部分阻止特定层中的水交换来控制分支入口和河口中污染物的运输和命运。地表水进入河口。在极强的向南流动期间，交界处被黑海水和表面污染物阻塞。海峡水动力通过涡流形成来控制与河口的水交换。当在连接处形成水平涡流时，它们的大小和分布会通过完全或部分阻止特定层中的水交换来控制分支入口和河口中污染物的运输和命运。