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首页> 外文期刊>Estuarine Coastal and Shelf Science >Oceanographic response to the passage of hurricanes in Belle Bay, Newfoundland
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Oceanographic response to the passage of hurricanes in Belle Bay, Newfoundland

机译:海洋学对纽芬兰贝勒湾飓风通过的反应

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摘要

This study describes the changes in the sea surface elevation, temperature, and current pattern in Belle Bay, a side basin in a broad fjord on the south coast of Newfoundland, as a response to the passage of atmospheric instabilities. Between 11 July and 15 October 2011, Belle Bay experienced the passage of an oceanic storm (July), the hurricanes Katia and Maria (September), and hurricane Ophelia (October). In spite of the large atmospheric pressure variations, wind seems to be the main mechanism driving the sharp fluctuations in temperature and bottom currents. The response of Belle Bay to wind forcing resulted in a combination of barotropic and baroclinic processes. The barotropic response was modulated by a topographic effect, where the sea level elevation was higher near bathymetric constriction zones. The baroclinic response consisted in a deepening of the thermocline in a range of 30-40 m, evidenced by a significant increase in the temperature.
机译:这项研究描述了纽芬兰南部海岸的一个宽阔峡湾的贝尔盆地贝丽湾的海表海拔,温度和水流模式的变化,作为对大气不稳定性的传递的响应。在2011年7月11日至10月15日之间,百丽湾经历了一次海洋风暴(7月),卡蒂亚和玛丽亚飓风(9月)以及奥菲利亚飓风(10月)的通过。尽管大气压力变化很大,但风似乎是驱动温度和底电流急剧波动的主要机制。百丽湾对风力的响应导致正压过程和斜压过程的结合。通过地形效应调节正压响应,在该高度下,测深收缩区附近的海平面升高更高。斜压响应包括温度跃升在30-40 m范围内的温跃层加深。

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