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A preliminary tidal analysis of ICESat laser altimetry: Southern Ross Ice Shelf

机译:ICESat激光测高的初步潮汐分析:Southern Ross冰架

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摘要

Satellite laser altimetry could soon play a key role in mapping poorly known ocean tides underneath Antarctic ice shelves. The amount of ICESat data now collected over the southernmost part of the Ross Ice Shelf is sufficient to warrant direct tidal analysis. Tides are estimated here from ten operational ICESat periods, totaling 363 days. A response analysis helps overcome unfavorable tidal sampling, especially an S-2 correlation with the annual cycle. Comparisons of tidal estimates against independent station data show RMS constituent differences around 3 cm - still somewhat large, but an encouraging result for such a challenging region.
机译:卫星激光测高仪可能很快将在绘制南极冰架下面未知的海潮中发挥关键作用。现在,在罗斯冰架最南端收集的ICESat数据量足以保证直接进行潮汐分析。根据十个运行的ICES周期估算的潮汐,总计363天。响应分析有助于克服不利的潮汐采样,尤其是与年度周期的S-2相关性。潮汐估计值与独立站点数据的比较结果表明,RMS分量差大约为3 cm-仍然有些大,但是对于这样一个充满挑战的地区,结果令人鼓舞。

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