Earth and Planetary Sciences
4 years ago

Tidal Resonance in Estuaries Threatens Flood Protection and Ecosystems

Water
Tidal Oscillation and Resonance in Semi-Closed Estuaries—Empirical Analyses from the Elbe Estuary, North Sea
Sebastian S. V. Hein, Vanessa Sohrt, Edgar Nehlsen, Thomas Strotmann, Peter Fröhle

Paper Summary

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Tidal waves in the Elbe estuary are getting stronger, affecting construction, navigation, flood protection, and ecosystems. Researchers used data from 25 gauges to study tidal behavior over 18 years. They found different tidal patterns and standing waves, with some areas amplifying tides more than others. The estuary does not show full resonance with tidal frequencies, but there are hints of increasing resonance in certain areas.