强海况下波流相互作用对有效波高的影响研究

孟凡昌; 李本霞

doi:10.12284/hyxb2023121

强海况下波流相互作用对有效波高的影响研究

doi: 10.12284/hyxb2023121

孟凡昌^{1, 2},
李本霞^{1, 2, 3, ,}

1.
国家海洋环境预报中心，北京 100081
2.
自然资源部海洋灾害预报技术重点实验室，北京 100081
3.
河海大学海洋学院，江苏南京 210024

基金项目: 国家重点研发计划 (2017YFA0604901)。

详细信息

作者简介:
孟凡昌(1992-)，男，河南省新乡市人，工程师，主要从事海浪预报及海洋气象等方面的研究。E-mail: mfc@nmefc.cn

通讯作者:
李本霞（1972-），女，研究员，博士，主要从事海浪精细化模拟和数值预报技术研究。E-mail： lbx@nmefc.cn

中图分类号: P731.22
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- 被引次数: 0
出版历程
- 收稿日期: 2022-01-05
- 修回日期: 2022-12-20
- 网络出版日期: 2023-09-21
- 刊出日期: 2023-07-01

The study of the influences of wave-current interaction on significant wave height under serious sea conditions

Meng Fanchang^{1, 2},
Li Benxia^{1, 2, 3
, ,}

1.
National Marine Environmental Forecasting Center, Beijing 100081, China
2.
Key Laboratory of Marine Hazards Forecasting, National Marine Environmental Forecasting Center, Ministry of Natural Resources, Beijing 100081, China
3.
College of Oceanography, Hohai University, Nanjing 210024, China

摘要

摘要: 波流相互作用作为非线性科学的前沿课题，一直受到国内外广大学者的关注。本文以2016年第1号超强台风“尼伯特”为例，基于波流耦合模式研究了台风影响期间强海况下波流相互作用对有效波高的影响。研究表明：（1）波流耦合模式可有效提高强海况下海浪的模拟精度；（2）波流相互作用对有效波高的影响与波向和流向之间的夹角关系密切：当波向与流向大致相同时，波流相互作用使有效波高减小；当波向与流向大致相反时，波流相互作用使有效波高增大；当波向与流向之间的夹角越接近90°时，波流相互作用对有效波高的影响越小。波流相互作用对有效波高的影响最大可达1.5 m。
- 强海况 /
- 波流相互作用 /
- 耦合模式 /
- 有效波高
Abstract: As a frontier subject of nonlinear science, wave-current interaction has been studied by many scholars. This paper will explore the wave-current interaction under the serious sea conditions in the Northwest Pacific during the influenced by No.1 super Typhoon “Nepartak” in 2016. The results indicate that wave-current coupling model can effectively improve the simulation accuracy of significant wave height (SWH) under serious sea conditions. The influence of wave-current interaction on SWH is closely related to the angle between wave direction and sea surface current direction: when wave direction is close to current direction, wave-current interaction will decrease the SWH; in those areas where the wave and the current have the opposite direction, wave-current interaction will increase the SWH; the closer the angle between the wave and the current is to 90°, the less influence wave-current interaction has on the SWH. The maximum SWH difference whether including wave-current interaction or not is about 1.5 m.
- serious sea condition /
- wave-current interaction /
- coupled model /
- significant wave height

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图 1 浮标位置以及台风路径

Fig. 1 The position of buoy and the path of typhoon

下载: 全尺寸图片幻灯片

图 2 风速比较分析

Fig. 2 Comparison of wind speed

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图 3 模拟与观测有效波高比较

Fig. 3 The comparison of simulated significant wave height and observed significant wave height

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图 4 SWAN模式与耦合模式模拟最大有效波高比较（黑线为台风路径）

Fig. 4 Comparison of the maximum significant wave height between SWAN model and coupling model simulation (black line is typhoon path)

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图 5 表层流向、波向对有效波高的影响（底色为耦合模式与SWAN模式模拟有效波高之差）

Fig. 5 Effect of surface current and wave direction on effective wave height (the bottom color is the difference between the significant wave height simulated by coupling model and SWAN model)

下载: 全尺寸图片幻灯片

表 1 波−流耦合模式交换的变量

Tab. 1 Variables of wave−current coupling mode exchange

耦合子模式	SWAN波浪模式	ROMS海洋模式
交换的变量	Dwave波向	zeta自由表面高度
	Hwave有效波高	VEL_x表层流速x方向的分量
	Lwave平均波长	VEL_y表层流速y方向的分量
	Pwave_bot底部的波浪周期	……
	Pwave_top 表层峰谱周期
	……

下载: 导出CSV

表 2 各浮标处分析风速和观测风速的标准偏差与平均绝对误差（单位：m/s ）

Tab. 2 The standard deviation and mean absolute error of the analyzed and the observed wind speed at each buoy (unit: m/s)

	金门	东沙岛	马祖	花莲	七股	新竹	平均值
标准偏差	1.708 6	2.104 6	1.642 5	2.854 1	2.462 5	3.503 4	2.379 2
平均绝对误差	1.343 4	1.650 1	1.284 2	2.341 5	1.785 7	2.037 3	1.740 3

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表 3 模拟和观测有效波高的统计变量比较

Tab. 3 Comparison of statistical variables between simulated significane wave height and observed significant wave height

统计变量		金门	东沙岛	马祖	花莲	七股	新竹
相关系数	SWAN	0.952 4	0.784 0	0.904 3	0.965 0	0.763 6	0.945 6
	耦合	0.966 3	0.828 4	0.919 5	0.962 2	0.873 8	0.961 6
标准偏差	SWAN	0.107 1	2.065 0	0.633 5	4.776 5	3.300 0	2.379 1
	耦合	0.494 4	1.648 0	0.064 2	1.729 4	1.691 5	1.548 8
平均绝对误差	SWAN	0.107 1	2.065 0	0.633 5	4.776 5	3.300 0	2.379 1
	耦合	0.494 4	1.648 0	0.064 2	1.729 4	1.691 5	1.548 8

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