我国东部海域高精度地转流的确定方法The determination method of high precision geostrophic currents in East China Sea
王文超,文汉江,刘焕玲,陈柏含,贾旭
摘要(Abstract):
针对目前带有高频信息的全球稳态海面地形模型的计算过程比较复杂的问题,该文采用移去恢复法,对由全球海面高模型得到稳态海面地形模型添加高频信息,并用新模型计算我国东部海域的地转流,分析其精度。结果表明:使用卫星重力场模型GOCE_TIM5,全球平均海面高模型CNES-CLS15,计算出分辨率为15′×15′我国东部海域的地转流,高频信息不明显;采用移去恢复法,利用GOCE_TIM5模型、CNES-CLS15模型、全球稳态海面地形模型CNES-CLS13,得到相同分辨率我国东部海域的地转流,与未采用移去恢复法相比,其结果中细节信息明显,与全球实测浮标数据更为接近,其精度与由全球稳态海面地形模型CNES-CLS13得到结果相当。
关键词(KeyWords): GOCE;卫星测高;MDT;地转流
基金项目(Foundation): 民用航天预先研究项目;; 高分对地观测系统重大专项;; 高分遥感测绘应用示范系统(一期);; 中国测绘科学研究院基本科研业务费资助项目(7771811)
作者(Author): 王文超,文汉江,刘焕玲,陈柏含,贾旭
DOI: 10.16251/j.cnki.1009-2307.2019.08.006
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