High Frequency Field Measurements of an Undular Bore Using a 2D LiDAR Scanner
AbstractThe secondary wave field associated with undular tidal bores (known as whelps) has been barely studied in field conditions: the wave field can be strongly non-hydrostatic, and the turbidity is generally high. In situ measurements based on pressure or acoustic signals can therefore be limited or inadequate. The intermittent nature of this process in the field and the complications encountered in the downscaling to laboratory conditions also render its study difficult. Here, we present a new methodology based on LiDAR technology to provide high spatial and temporal resolution measurements of the free surface of an undular tidal bore. A wave-by-wave analysis is performed on the whelps, and comparisons between LiDAR, acoustic and pressure-derived measurements are used to quantify the non-hydrostatic nature of this phenomenon. A correction based on linear wave theory applied on individual wave properties improves the results from the pressure transducer (Root mean square error,
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Martins, K.; Bonneton, P.; Frappart, F.; Detandt, G.; Bonneton, N.; Blenkinsopp, C.E. High Frequency Field Measurements of an Undular Bore Using a 2D LiDAR Scanner. Remote Sens. 2017, 9, 462.
Martins K, Bonneton P, Frappart F, Detandt G, Bonneton N, Blenkinsopp CE. High Frequency Field Measurements of an Undular Bore Using a 2D LiDAR Scanner. Remote Sensing. 2017; 9(5):462.Chicago/Turabian Style
Martins, Kévin; Bonneton, Philippe; Frappart, Frédéric; Detandt, Guillaume; Bonneton, Natalie; Blenkinsopp, Chris E. 2017. "High Frequency Field Measurements of an Undular Bore Using a 2D LiDAR Scanner." Remote Sens. 9, no. 5: 462.
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