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首页> 外文期刊>Geophysical Research Letters >Ocean tidal solutions in Antarctica from GRACE inter-satellite tracking data
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Ocean tidal solutions in Antarctica from GRACE inter-satellite tracking data

机译:GRACE卫星间跟踪数据在南极海洋潮汐解决方案

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摘要

Long-wavelength components of the oceanic tides surrounding Antarctica are estimated directly from three years of GRACE satellite-to-satellite ranging measurements. An inversion is performed for the major constituents M-2, O-1, and S-2, with K-1 excluded because of inadequate phase sampling. The tides are parameterized as localized average mass anomalies over areas approximately 300(2) km(2); other parameters, including satellite state adjustments, are estimated simultaneously with the tides. Qualitative comparison of our solutions with in situ tide measurements shows agreement in spatial pattern, clearly indicating regions where our adopted prior model is inadequate. To exploit these solutions, follow-on work must assimilate these long-wavelength components into a high-resolution numerical tidal model.
机译:南极洲周围海潮的长波分量是直接从GRACE卫星到卫星的三年测距中直接估算得出的。对主要成分M-2,O-1和S-2进行了反演,但由于相位采样不足而排除了K-1。将潮汐参数化为大约300(2)km(2)区域上的局部平​​均质量异常;与潮汐同时估计其他参数,包括卫星状态调整。我们的解决方案与原位潮汐测量结果的定性比较表明,空间模式具有一致性,清楚地表明了我们采用的先前模型不足的区域。为了利用这些解决方案,后续工作必须将这些长波长分量吸收到高分辨率的数值潮汐模型中。

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