Pineau-Guillou Lucia, Lazure Pascal
IFREMER, Laboratoire d'Océanographie Physique et Spatiale, UMR 6523 (IFREMER, CNRS, IRD, UBO), IUEM, Brest, France.
Sci Data. 2025 Jun 13;12(1):999. doi: 10.1038/s41597-025-05342-9.
A total of 30 low-cost bottom pressure sensors sampling at 2 Hz were developed and deployed in a nearshore environment during 4.2 months. The experiment took place in Blancs Sablons, a sandy bay near Le Conquet (France), during 2023-2024 winter. All the 30 sensors were successfully recovered. Among them, 22 sensors functioned properly recording full data, 5 sensors partially recorded data due to battery failure or malfunctioning, and only 3 sensors did not work, due to small holes in their plastic protection. Comparison with a commercial pressure gauge revealed the good performance of the low-cost sensor, with a large autonomy, few missing data, and a robust wave-to-wave comparison. However, a small drift of around -0.001 bar/month was detected. Pressure data were converted into sea levels, related to Chart Datum, and validated against permanent instruments (wave buoy and tide gauge) located close to the site. The high-frequency dataset can now be used to validate ocean and wave models, or fine scale altimetry missions such as SWOT (Surface Water and Ocean Topography).
共研发了30个低成本底部压力传感器，采样频率为2赫兹，并在近岸环境中部署了4.2个月。该实验于2023 - 2024年冬季在法国勒孔克附近的一个名为布兰克斯萨布隆的沙质海湾进行。所有30个传感器均成功回收。其中，22个传感器正常运行，记录了完整数据；5个传感器由于电池故障或故障部分记录了数据；只有3个传感器因塑料保护罩上有小孔而无法工作。与商业压力计的比较显示，低成本传感器性能良好，自主性强，缺失数据少，且逐波比较稳健。然而，检测到约-0.001巴/月的小漂移。压力数据被转换为相对于海图基准面的海平面，并与位于该地点附近的永久性仪器（波浪浮标和潮汐计）进行了验证。高频数据集现在可用于验证海洋和波浪模型，或用于诸如SWOT（地表水和海洋地形）等精细尺度的测高任务。
