Wave energy resource characterization employing joint distributions in frequency-direction-time domain

Ahn, Seongho; Neary, Vincent S.

doi:10.1016/j.apenergy.2020.116407

Wave energy resource characterization employing joint distributions in frequency-direction-time domain

Journal Article · Fri Jan 08 00:00:00 EST 2021 · Applied Energy

DOI:https://doi.org/10.1016/j.apenergy.2020.116407· OSTI ID:1769931

Ahn, Seongho ^[1]; Neary, Vincent S. ^[1]

Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)

Joint and marginal distributions in the frequency, direction, and time domain are employed to demonstrate their value for wave energy resource characterization when full spectra are available. Insights gained through analysis of these distributions support wave energy converter concept design, operation and maintenance. Spatial trends in the wave energy resource and contributing wave energy systems along the continental shelf of the West Coast of the United States are investigated using the most recent two-dimensional wave spectra measurements at four buoys over an eleven year period (2008 to 2018). Resource hot spots and dominant resolved energy resource bands in the frequency-direction-time domain are delineated. Resource attributes, including frequency and directional spreading, and seasonal variability, are characterized using joint distributions and marginal distributions of wave power spectra. North Pacific westerly swells in the winter season, augmented by Aleutian low-pressure southwesterly swells, are the principal suppliers of the dominant resource and main drivers influencing resource attributes. In conclusion, the modification of these systems southward, especially the North Pacific westerly swells, explains the observed spatial resource trends. The dominant resource wave period shifts two seconds to higher wave periods, thirty degrees in the dominant direction band to a more northward orientation, and forward by one month.

View Accepted Manuscript (DOE)

Research Organization:: Sandia National Laboratories (SNL-NM), Albuquerque, NM (United States)

Sponsoring Organization:: USDOE; USDOE Office of Energy Efficiency and Renewable Energy (EERE)

Grant/Contract Number:: AC04-94AL85000

OSTI ID:: 1769931

Alternate ID(s):: OSTI ID: 1778628
OSTI ID: 23187527

Report Number(s):: SAND--2021-1889J; 694143

Journal Information:: Applied Energy, Journal Name: Applied Energy Vol. 285; ISSN 0306-2619

Publisher:: ElsevierCopyright Statement

Country of Publication:: United States

Language:: English

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