Observations of Ocean Surface Wave Attenuation in Sea Ice Using Seafloor Cables
Abstract
Abstract The attenuation of ocean surface waves during seasonal ice cover is an important control on the evolution of Arctic coastlines. The spatial and temporal variations in this process have been challenging to resolve with conventional sampling using sparse arrays of moorings or buoys. We demonstrate a novel method for persistent observation of wave‐ice interactions using distributed acoustic sensing (DAS) along existing seafloor fiber optic telecommunications cables. DAS measurements span a 36‐km cross‐shore cable on the Beaufort Shelf from Oliktok Point, Alaska. DAS optical sensing of fiber strain‐rate provides a proxy for seafloor pressure, which we calibrate with wave buoy measurements during the ice‐free season (August 2022). We apply this calibration during the ice formation season (November 2021) to obtain unprecedented resolution of variable wave attenuation rates in new, partial ice cover. The location and strength of wave attenuation serve as proxies for ice coverage and thickness, especially during rapidly evolving events.
- Authors:
-
- Woods Hole Oceanographic Institution Woods Hole MA USA
- Applied Physics Laboratory University of Washington Seattle WA USA
- Sandia National Laboratories Albequerque NM USA
- Publication Date:
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 2202340
- Alternate Identifier(s):
- OSTI ID: 2204326
- Resource Type:
- Published Article
- Journal Name:
- Geophysical Research Letters
- Additional Journal Information:
- Journal Name: Geophysical Research Letters Journal Volume: 50 Journal Issue: 20; Journal ID: ISSN 0094-8276
- Publisher:
- American Geophysical Union (AGU)
- Country of Publication:
- United States
- Language:
- English
Citation Formats
Smith, Madison M., Thomson, Jim, Baker, Michael G., Abbott, Robert E., and Davis, Jake. Observations of Ocean Surface Wave Attenuation in Sea Ice Using Seafloor Cables. United States: N. p., 2023.
Web. doi:10.1029/2023GL105243.
Smith, Madison M., Thomson, Jim, Baker, Michael G., Abbott, Robert E., & Davis, Jake. Observations of Ocean Surface Wave Attenuation in Sea Ice Using Seafloor Cables. United States. https://doi.org/10.1029/2023GL105243
Smith, Madison M., Thomson, Jim, Baker, Michael G., Abbott, Robert E., and Davis, Jake. Fri .
"Observations of Ocean Surface Wave Attenuation in Sea Ice Using Seafloor Cables". United States. https://doi.org/10.1029/2023GL105243.
@article{osti_2202340,
title = {Observations of Ocean Surface Wave Attenuation in Sea Ice Using Seafloor Cables},
author = {Smith, Madison M. and Thomson, Jim and Baker, Michael G. and Abbott, Robert E. and Davis, Jake},
abstractNote = {Abstract The attenuation of ocean surface waves during seasonal ice cover is an important control on the evolution of Arctic coastlines. The spatial and temporal variations in this process have been challenging to resolve with conventional sampling using sparse arrays of moorings or buoys. We demonstrate a novel method for persistent observation of wave‐ice interactions using distributed acoustic sensing (DAS) along existing seafloor fiber optic telecommunications cables. DAS measurements span a 36‐km cross‐shore cable on the Beaufort Shelf from Oliktok Point, Alaska. DAS optical sensing of fiber strain‐rate provides a proxy for seafloor pressure, which we calibrate with wave buoy measurements during the ice‐free season (August 2022). We apply this calibration during the ice formation season (November 2021) to obtain unprecedented resolution of variable wave attenuation rates in new, partial ice cover. The location and strength of wave attenuation serve as proxies for ice coverage and thickness, especially during rapidly evolving events.},
doi = {10.1029/2023GL105243},
journal = {Geophysical Research Letters},
number = 20,
volume = 50,
place = {United States},
year = {Fri Oct 13 00:00:00 EDT 2023},
month = {Fri Oct 13 00:00:00 EDT 2023}
}
https://doi.org/10.1029/2023GL105243
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