# Broadband Wall-less Waveguide for Shallow Water Waves

## TL;DR

This paper introduces a broadband, wall-less waveguide for shallow water waves achieved by seabed property manipulation, enabling wave confinement without sidewalls, with potential applications in energy and shoreline protection.

## Contribution

It demonstrates a novel seabed-based method to control water waves broadband without physical barriers, expanding wave management techniques.

## Key findings

- Seabed viscoelasticity modifies effective gravity for water waves.
- Wave confinement achieved without sidewalls.
- Potential applications in wave energy and shoreline protection.

## Abstract

We present a broadband waveguide for water waves obtained through mere manipulation of seabed properties and without any need for sidewalls. Specifically, we show that a viscoelastic seabed results in a modified effective gravity term in the governing equations of water waves, which provides a generic broadband mechanism to control oceanic wave energy and enables confining surface waves inside a long narrow path without sidewalls. Our findings have promising applications in guiding and steering waves for oceanic wave energy farms or protecting shorelines.