Measuring sea−level with GPS−equipped buoys : a multi−instruments experiment at Aix Island
Measuring sea−level with GPS−equipped buoys : a multi−instruments experiment at Aix Island
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使用配备 GPS 的浮标测量海平面：艾克斯岛的多仪器实验
DOI：
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发表时间：
2013
期刊：
影响因子：
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通讯作者：
G. Wöppelmann
中科院分区：
文献类型：
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作者：
G. André;B. M. Míguez;V. Ballu;L. Testut;G. Wöppelmann
在当前全球变暖和相关海平面上升的背景下，以亚厘米精度测量全球参照系中的海平面是一项相关的挑战。全球导航卫星系统(GNSS)可以提供在绝对地心坐标系中直接参考的海平面测量结果。本文介绍了用三个装有全球定位系统(GPS)的浮标、一个雷达验潮仪和一个潮汐杆进行的多仪器实验结果。这项实验于2012年3月27-28日在法国西海岸的艾克斯岛进行。GPS浮标通过Van de Casteele测试与传统的验潮仪测量结果进行了对比评估。由GPS浮标和雷达验潮仪数据的差值计算的均方根误差(RMSE)在1 cm到2.2 cm之间，适合于潮汐应用，并为未来海平面变化研究提供了有趣的前景。
Measuring sea-level in a global reference frame with sub-centimeter accuracy is a relevant challenge in the context of current global warming and associated sea-level rise. Global Navigation Satellite Systems (GNSS) can provide sea-level measurements directly referenced in an absolute geocentric frame. We present here the results of a multi-instruments experiment with three buoys equipped with Global Positioning System (GPS), a radar tide gauge and a tide pole. This experiment was carried out at Aix Island (West coast of France) on the 27-28 March 2012. The GPS buoys were evaluated against conventional tide gauge measurements through a Van de Casteele test. The Root Mean Square Error (RMSE) computed from the difference between the GPS-buoys and radar tide gauge data ranges from 1 cm to 2.2 cm, which is suitable for tidal applications and offers interesting perspectives for future sea-level variations studies.