Short-term ocean tidal parameters estimated from high-rate buoy GNSS data

IF 2.8 3区地球科学 Q2 ASTRONOMY & ASTROPHYSICS

Advances in Space Research Pub Date : 2025-03-24 DOI:10.1016/j.asr.2025.03.045

Zhifan Yan , Jinyun Guo , Maosheng Zhou , Jingwen Zong

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引用次数: 0

Abstract

Ocean tides are significant factors affecting sea surface fluctuations and changes in ocean circulation. Real-time and accurate estimation of tidal parameters is crucial. This paper presents a convenient, fast, accurate, and low-cost method for short-term tidal parameter estimation. The methodology utilizes kinematic Precise Point Positioning (PPP) to determine the height of Global Navigation Satellite System (GNSS) antennas mounted on buoys, integrating the XGM2019e_2159 model and wavelet analysis for baseline transformation and denoising. This process yields the orthometric height sequence of the measurement point’s water level. Subsequently, harmonic analysis is employed to estimate ocean tidal parameters over periods of 16, 8, and 4 days. In addition, the 16-day period ocean tidal parameters are used to predict water levels. Finally, the results are compared with the pressure tide gauge, the FES2022 model and the EOT20 model, indicating that the ocean tidal parameters and predicted water levels closely match the reference values, with differences in amplitudes and phases within ± 5 cm and ± 8° for the 8-day and 4-day periods. This demonstrates that the proposed method effectively reflects short-term tidal information and characteristics.

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基于高速率浮标GNSS数据估算的短期海洋潮汐参数

海潮是影响海面波动和海洋环流变化的重要因素。潮汐参数的实时准确估计是至关重要的。本文提出了一种方便、快速、准确、低成本的短期潮汐参数估计方法。该方法利用运动精确点定位（PPP）来确定安装在浮标上的全球导航卫星系统（GNSS）天线的高度，结合XGM2019e_2159模型和小波分析进行基线转换和去噪。这个过程产生测量点的水位的正交高度序列。随后，利用调和分析方法估计了16、8和4天周期的潮汐参数。此外，16天周期的海潮参数被用来预测水位。最后，将结果与压力潮汐计、FES2022模型和EOT20模型进行了比较，结果表明，8 d和4 d周期的潮汐参数和预测水位与参考值吻合较好，振幅和相位的差异在±5 cm和±8°范围内。结果表明，该方法有效地反映了短期潮汐信息和特征。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Advances in Space Research 地学天文-地球科学综合

CiteScore

5.20

自引率

11.50%

发文量

800

审稿时长

5.8 months

期刊介绍： The COSPAR publication Advances in Space Research (ASR) is an open journal covering all areas of space research including: space studies of the Earth''s surface, meteorology, climate, the Earth-Moon system, planets and small bodies of the solar system, upper atmospheres, ionospheres and magnetospheres of the Earth and planets including reference atmospheres, space plasmas in the solar system, astrophysics from space, materials sciences in space, fundamental physics in space, space debris, space weather, Earth observations of space phenomena, etc. NB: Please note that manuscripts related to life sciences as related to space are no more accepted for submission to Advances in Space Research. Such manuscripts should now be submitted to the new COSPAR Journal Life Sciences in Space Research (LSSR). All submissions are reviewed by two scientists in the field. COSPAR is an interdisciplinary scientific organization concerned with the progress of space research on an international scale. Operating under the rules of ICSU, COSPAR ignores political considerations and considers all questions solely from the scientific viewpoint.