While the conventional philosophy of wave energy conversion is to target the large amounts of power in the peak of the input wave spectrum, this study proposes that for the application of powering marine sensor networks (MSNs), it is advantageous to target the high frequency tail of the wave spectrum. This strategy is predicated on two primary advantages: the spatial and temporal persistence of the wave energy resource in the high-frequency region and its compatibility with the resonance characteristics of smaller MSN devices. The research seeks to identify the frequency range in sea spectra which is temporally and spatially omnipresent in the marine environment, and quantify the energy content available within this range. Theoretical frameworks are combined with a detailed case study to analyse the temporal and spatial variations of the wave resource and the persistent energy content in the high-frequency tail. Results reveal a notable consistency in energy availability above 2.5 rad/s, highlighting the high-frequency tail's potential as a reliable energy resource for MSNs. The available power in the identi ed high-frequency range is quanti ed, providing valuable insights for the design and implementation of e cient wave energy harvesters speci cally tailored to the needs of diverse marine environments.

PRTR-C17.I1