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基于卫星高度计资料提取浙江近海的潮汐信息
赵杰,汪一航,王永刚,王建
0
(宁波大学,浙江 宁波 315211;国家海洋局第一海洋研究所、海洋环境科学与数值模拟国家海洋局重点实验室,山东 青岛 266061)
摘要:
利用Topex/Poseidon(T/P)、Jason-1和Jason-2卫星24a的原始轨道及6a的变轨轨道高度计资料,对浙江近海区域内进行潮汐调和分析,得到8个主要分潮(Q1O1P1K1N2M2S2K2)的调和常数.比较卫星轨道交叉点处潮汐调和常数结果显示,8个分潮总体综合误差在原始轨道, 变轨轨道及原始轨道与变轨轨道交叉点处的和方根RSS值分别为3.16、7.02、5.54cm;用卫星高度计资料及31个近岸验潮站得到的潮汐分布与21个验潮站资料结果进行比较, M2S2N2K1O1主要分潮的多点向量均方根偏差分别为4.32、3.64、1.97、2.61、1.83 cm;本研究结果与前人数值模拟结果比较显示M2S2分潮在对比点处的多点向量均方根偏差在11、8 cm左右,最后给出了浙江近岸及近海区域更为精确的5个主要分潮(M2S2N2K1O1)的同潮图.
关键词:  物理海洋学;卫星高度计资料  潮汐调和分析  经验同潮图  浙江近海区域
DOI:10.3969/J.ISSN.2095-4972.2018.03.007
基金项目:国家海洋局东海信息中心资助项目(HX-2017000232)
Extraction of tidal information on Zhejiang offshore based on satellite altimetry data
ZHAO Jie,WANG Yi-hang,WANG Yong-gang,WANG Jian
(Ningbo University,Ningbo 315211, China;First Institute of Oceanography,Key Laboratory of Marine Science and Numerical Modeling, SOA, Qingdao 266061, China)
Abstract:
According to the data of 24-year original orbit and 6-year interleaved ground track from Topex/ Poseidon(T/P), Jason-1 and Jason-2 satellite altimeter, we performed the harmonic analysis of tide on the offshore area of Zhejiang and obtained the harmonic constant of 8 principal constituents (Q1O1P1K1N2M2S2 and K2). The tidal harmonic constants of the satellite orbit crossing point show that the RSS of 8 tidal error synthesis in the original orbit, interleaved orbit, original and interleaved orbit crossing point are 3.16cm, 7.02 cm and 5.54cm, respectively. We show that the root-mean-square error of important tides of M2S2N2K1 and O1 are 4.32cm, 3.64cm, 1.97 cm, 2.61cm and 1.83cm, respectively, by comparing the tidal distribution information from satellite altimeter and 31 inshore tide stations at 21 tide stations. The vector root-mean-square error of multi-point of M2 and S2 tides at the contrast point are about 11cm and 8cm from our results and previous numerical simulation results. In the end, this thesis presents a more precise and up-to-date cotidal chart of 5 major constituents (M2S2N2K1 and O1) on Zhejiang inshore and offshore areas.
Key words:  physical oceanography  satellite altimetry data  harmonic analysis of tide  empirical cotidal charts  Zhejiang offshore waters

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