Beach Deployment of a Low-Cost GNSS Buoy for Determining Sea-Level and Wave Characteristics



Knight, Philip J, Bird, Cai O, Sinclair, Alex, Higham, Jonathan ORCID: 0000-0001-7577-0913 and Plater, Andrew J ORCID: 0000-0001-7043-227X
(2021) Beach Deployment of a Low-Cost GNSS Buoy for Determining Sea-Level and Wave Characteristics. GEOSCIENCES, 11 (12). p. 494.

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Abstract

<jats:p>Spatially explicit data on tidal and waves are required as part of coastal monitoring applications (e.g., radar monitoring of coastal change) for the design of interventions to mitigate the impacts of climate change. A deployment over two tidal cycles of a low-cost Global Navigation Satellite System (GNSS) buoy at Rossall (near Fleetwood), UK demonstrated the potential to record good quality sea level and wave data within the intertidal zone. During each slack water and the following ebb tide, the sea level data were of good quality and comparable with data from nearby tide gauges on the national tide gauge network. Moreover, the GNSS receiver was able to capture wave information and these compared well with data from a commercial wave buoy situated 9.5 km offshore. Discontinuities were observed in the elevation data during flood tide, coincident with high accelerations and losing satellite signal lock. These were probably due to strong tidal currents, which, combined with spilling waves, would put the mooring line under tension and allow white water to spill over the antenna resulting in the periodic loss of GNSS signals, hence degrading the vertical solutions.</jats:p>

Item Type: Article
Uncontrolled Keywords: sea-level, waves, intertidal zone
Divisions: Faculty of Science and Engineering > School of Environmental Sciences
Depositing User: Symplectic Admin
Date Deposited: 02 Dec 2021 08:07
Last Modified: 15 Mar 2024 01:52
DOI: 10.3390/geosciences11120494
Open Access URL: https://www.mdpi.com/2076-3263/11/12/494
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URI: https://livrepository.liverpool.ac.uk/id/eprint/3144342