Tracking shifting estuaries with remote sensing techniques to aid lifeboat rescue services

Belén López Pardo; Ruaridh A. Clark; Gwilym Gibbons; Malcolm Macdonald; Ciara N. McGrath

doi:10.1117/12.2678946

17 October 2023 Tracking shifting estuaries with remote sensing techniques to aid lifeboat rescue services

Belén López Pardo, Ruaridh A. Clark, Gwilym Gibbons, Malcolm Macdonald, Ciara N. McGrath

Proceedings Volume 12728, Remote Sensing of the Ocean, Sea Ice, Coastal Waters, and Large Water Regions 2023; 1272808 (2023) https://doi.org/10.1117/12.2678946
Event: SPIE Remote Sensing, 2023, Amsterdam, Netherlands

Abstract

In certain areas of the world with large tidal ranges, rain and wind can cause the path of channels and estuaries to shift dramatically. Lifeboat rescue services must navigate through these areas in spite of the dangers it can entail. This work investigates the alternatives to provide regular mapping of the seabed, enabling these teams to reach casualties without becoming casualties themselves. Underwater Vehicles, SONAR systems and Unmanned Aerial Vehicles are all considered viable options but satellites equipped with synthetic aperture radar are proven to be the most advantageous. To map the path of the estuary, images must be taken during low tide, therefore, data availability is assessed by studying the revisit time and matching this to the tidal status of the area of interest. Different satellite options are examined, including commercial and non-commercial but a specific focus is given to Sentinel-1 due to its free accessibility. The periodicity of the satellite coupled with the tidal behaviour causes intervals during the month where no usable images can be taken. The maximum number of days between consecutive useful images is found to be 12, with an average of 6 useful images per month. The periods where these intervals happen are also identified. Therefore, to meet the user needs, an auxiliary system must be implemented to assist the satellite and increase the number of useful images taken per month. The area of interest of this study is the Solway Firth due to its fast tidal movements and ranges.

Conference Presentation

(2023) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Belén López Pardo, Ruaridh A. Clark, Gwilym Gibbons, Malcolm Macdonald, and Ciara N. McGrath "Tracking shifting estuaries with remote sensing techniques to aid lifeboat rescue services", Proc. SPIE 12728, Remote Sensing of the Ocean, Sea Ice, Coastal Waters, and Large Water Regions 2023, 1272808 (17 October 2023); https://doi.org/10.1117/12.2678946

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