基于实测数据的台湾海峡中部波浪特征分析 *

doi:10.11978/2020035

Abstract

Abstract:

Using the measured wave data in 2017 in the central Taiwan Strait, we analyze the basic features of wave, including spectral features, and their relationships with wind. The regression relationship among important characteristic wave parameters and the appropriate wave spectrum form are also investigated. The results are as follows. 1) The most frequently occurring wave direction is NE, and the strong wave direction is NNE. The monthly average significant wave height varies from 0.87 to 2.98 m. The wave height is the smallest in July and the highest in December. The wave period has similar inter-month change to wave height. 2) Mixed waves dominated by wind wave and single-peaked spectra make up the majority. The wave height is positively correlated with the wind speed as a whole. Strong wave is mainly generated by typhoons and strong northeast monsoon. 3) There are good linear correlations between mean wave period and most characteristic period parameters. The significant wave height and its corresponding wave period are strongly linearly related in the directions of NNE and NE. 4) Compared with the Jonswap spectrum, the Code spectrum 1 is more reasonable for the fitting of sea wave spectrum in this area. A spectrum in the form of Code spectrum 1 is given, which is fitted by significant wave height and spectral peak period. These results can provide references for ocean engineering design and numerical simulation of wave.

Key words: Taiwan Strait, wave characteristics, wave spectrum, wave parameter, fitting analysis

CLC Number:

P731.22

XU Xiao, TAO Aifeng, LI Xueding, ZHENG Xiangjing, LIN Yinan. Analysis of Wave Characteristics in the Central Taiwan Strait Based on Measured Data[J].Journal of Tropical Oceanography, 2021, 40(1): 12-20.

Figures/Tables 8

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References 21

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	月份												全年
	1	2	3	4	5	6	7	8	9	10	11	12	全年
小浪频率/%	0.1	0.3	0.5	2.6	2.6	2.1	4.1	1.4	2.1	0.3	0.0	0	16.1
轻浪频率/%	1.6	1.2	2.3	2.5	2.3	4.5	3.5	5.2	3.1	0.4	0.5	0.5	27.6
中浪频率/%	3.4	2.4	3.9	2.0	3.6	1.8	0.6	1.8	2.0	2.5	3.9	2.6	30.5
大浪频率/%	3.2	3.6	1.8	0.6	0.0	0.0	0.3	0.2	1.1	4.3	2.8	4.1	22.0
巨浪频率/%	0.4	0.3	0.2	0.1	0.0	0.0	0.0	0.0	0.0	1.0	0.4	1.4	3.8

位置	测站	月均有效波高/m				月均平均周期/s				大浪频率/%
位置	测站	2月	5月	8月	11月	2月	5月	8月	11月	2月	5月	8月	11月
海峡以北	马祖	2.1	1.3	1.3	2.0	5.6	5.2	5.1	5.3	26	6	14	25
海峡中部	2号标	2.3	1.0	1.0	2.5	6.4	5.4	5.3	6.4	50	0	2	48
海峡以南	东沙岛	2	1.2	1.6	2.6	5.9	5.1	5.6	6.1	26	6	18	58

Analysis of Wave Characteristics in the Central Taiwan Strait Based on Measured Data

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