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Related Experiment Video

Updated: Sep 17, 2025

Assessing Intertidal Populations of the Invasive European Green Crab

Assessing Intertidal Populations of the Invasive European Green Crab

Published on: September 16, 2020

Tidal bore revealed by SWOT: a case study from the Severn river.

R L Arildsen¹, O B Andersen², B Nilsson²

¹National Space Institute, Technical University of Denmark, Kongens Lyngby, Denmark. ralor@space.dtu.dk.

Scientific Reports

|July 1, 2025

Summary

The Surface Water and Ocean Topography (SWOT) satellite successfully captured a tidal bore in the Bristol Channel, providing unprecedented insights into these dynamic tidal waves and their inland interactions.

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Last Updated: Sep 17, 2025

Assessing Intertidal Populations of the Invasive European Green Crab

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Published on: September 16, 2020

Design and Use of an Apparatus for Quantifying Bivalve Suspension Feeding at Sea

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Published on: September 5, 2018

Watershed Planning within a Quantitative Scenario Analysis Framework

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Published on: July 24, 2016

Area of Science:

Earth Observation
Oceanography
Hydrology

Background:

Tidal bores are significant wave phenomena with ecological and cultural importance.
Understanding tidal bore hydrodynamics is crucial but remains incomplete.
Satellite data has not previously captured these events in detail.

Purpose of the Study:

To utilize Surface Water and Ocean Topography (SWOT) satellite data for detailed analysis of tidal waves and bores.
To assess the accuracy of SWOT high-rate data in complex coastal and intertidal zones.
To gain novel insights into tidal bore dynamics and interactions with inland waters.

Main Methods:

Deriving longitudinal profiles of water surface elevations using SWOT satellite data.
Analyzing high-rate SWOT data to capture a tidal bore and associated tidal waves.
Examining data from April 19-21, 2023, focusing on minimal data smoothing.

Main Results:

First-ever satellite observation of a tidal bore within the Bristol Channel and Severn River system.
Demonstrated high accuracy of SWOT high-rate data, even in challenging intertidal zones.
Captured detailed dynamics of tidal waves and their interaction with inland water systems.

Conclusions:

SWOT satellite data provides a valuable tool for bridging coastal knowledge gaps.
High-resolution altimetry data enhances the integration of hydrology and physical oceanography.
Findings contribute significantly to understanding the complex phenomena of tidal bores.