2018 年和 2020 年期间水下滑翔机观测到的南海北部热带气旋的海洋响应

IF 2.3 3区 地球科学 Q2 OCEANOGRAPHY
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引用次数: 0

摘要

本研究主要利用水下滑翔机的原位观测资料,分析了受 "桑廷"(2018)、"曼达尔 "等(2018)、"曼赫特"(2018)和 "努尔"(2020)影响的南海北部海洋响应。结果表明,由于距离远、强度弱、移动速度快,这些TC分别造成了0.6 ℃、1.1 ℃和1.7 ℃的最大海面温度下降,降温幅度弱于一般情况。太阳净辐射、降水、10 米风速和海面热通量也对海温变化有一定影响。在 "宋-丁 "和 "努尔 "过境后,混合层深度(MLD)变浅,而在 "砰砰 "过境期间,混合层深度变化不大。TC过境后,混合层深度附近的分层更加明显,呈带状分布,浮力频率高值区更强。最短距离过后 1 周内,海洋上层的温度和盐度响应强于海面,温度和盐度梯度及其异常在次表层更为明显。这项研究结果表明,水下滑翔机观测对了解热带气旋的海洋反应很重要,对研究热带气旋的活动也很有用。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Oceanic response to tropical cyclone in the northern South China Sea observed by underwater gliders during 2018 and 2020

In this study, we mainly used in-situ observations from underwater gliders to analyze the ocean response in the northern South China Sea affected by Son-tinh (2018), Mandal et al. (2018) Mangkhut (2018)and Noul (2020). The results showed that these TCs caused 0.6 °C, 1.1 °C and 1.7 °C maximum sea surface temperature cooling respectively, which were weaker than general conditions because of long distance, weak intensity and fast movement speed. Net solar radiation, precipitation, 10-m wind and sea surface heat flux also made contribution in changes of SST. The mixed layer depth (MLD) became shallower after Son-Tinh and Noul passed through, while during Mangkhut it did not change significantly. After TCs passed through, the stratification around MLD became more obvious, with a banded distribution and stronger high-value areas of buoyancy frequency. Within 1 week after the shortest distance, the temperature and salinity responses in the upper ocean were stronger than those at the sea surface, and the gradients of temperature and salinity and their anomalies were more evident in the subsurface layer. The results of this study show that underwater glider observations are important for understanding oceanic responses to tropical cyclones and are useful for studying tropical cyclone activities.

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来源期刊
CiteScore
4.60
自引率
4.20%
发文量
144
审稿时长
18.3 weeks
期刊介绍: Deep-Sea Research Part I: Oceanographic Research Papers is devoted to the publication of the results of original scientific research, including theoretical work of evident oceanographic applicability; and the solution of instrumental or methodological problems with evidence of successful use. The journal is distinguished by its interdisciplinary nature and its breadth, covering the geological, physical, chemical and biological aspects of the ocean and its boundaries with the sea floor and the atmosphere. In addition to regular "Research Papers" and "Instruments and Methods" papers, briefer communications may be published as "Notes". Supplemental matter, such as extensive data tables or graphs and multimedia content, may be published as electronic appendices.
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