Evaluation of global ocean tide models based on tidal gravity observations in China

Autor: Hongbo Tan, Olivier Francis, Guiju Wu, Guangliang Yang, Jiapei Wang, Xiaotong Zhang, Jinshui Huang, Chongyang Shen
Jazyk: angličtina
Rok vydání: 2021
Předmět:
Zdroj: Geodesy and Geodynamics, Vol 12, Iss 6, Pp 451-458 (2021)
Druh dokumentu: article
ISSN: 1674-9847
DOI: 10.1016/j.geog.2021.08.001
Popis: Previous studies show that the calculated loading effects from global ocean tide models do not match actual measurements of gravity attraction and loading effects in Southeast Asia. In this paper, taking advantage of a unique network of gravity tidal stations all over the Chinese mainland, we compare the observed and modeled tidal loading effects on the basis of the most recent global ocean tide models. The results show that the average efficiencies of the ocean tidal loading correction for O1, K1, M2 are 77%, 73% and 59%, respectively. The loading correction efficiencies using recent ocean tidal models are better than the 40 years old Schwiderskis model at coastal stations, but relative worse at stations far from ocean.
Databáze: Directory of Open Access Journals