Robust wavebuoys for the marginal ice zone: Experiences from a large persistent array in the Beaufort Sea

Martin J Doble, Jeremy Wilkinson, Lovro Valcic, Jeremy Robst, Andrew Tait, Mark Preston, Jean-Raymond Bidlot, Byonjun Hwang, Ted Maksym, Peter Wadhams

Research output: Contribution to journalArticle

3 Citations (Scopus)

Abstract

An array of novel directional wavebuoys was designed and deployed into the Beaufort Sea ice cover in March 2014, as part of the Office of Naval Research Marginal Ice Zone experiment. The buoys were designed to drift with the ice throughout the year and monitor the expected breakup and retreat of the ice cover, forced by waves travelling into the ice from open water. Buoys were deployed from fast-and-light air-supported ice camps, based out of Sachs Harbour on Canada’s Banks Island, and drifted westwards with the sea ice over the course of spring, summer and autumn, as the ice melted, broke up and finally re-froze. The buoys transmitted heave, roll and pitch timeseries at 1 Hz sample frequency over the course of up to eight months, surviving both convergent ice dynamics and significant waves-in-ice events. Twelve of the 19 buoys survived until their batteries were finally exhausted during freeze-up in late October/November. Ice impact was found to have contaminated a significant proportion of the Kalman-filter-derived heave records, and these bad records were removed with reference to raw x/y/z accelerations. The quality of magnetometer-derived buoy headings at the very high magnetic field inclinations close to the magnetic pole was found to be generally acceptable, except in the case of four buoys which had probably suffered rough handling during transport to the ice. In general, these new buoys performed as expected, though vigilance as to the veracity of the output is required.
LanguageEnglish
Article number47
Number of pages16
JournalElementa
Volume5
DOIs
Publication statusPublished - 21 Aug 2017
Externally publishedYes

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marginal ice zone
Ice
Buoys
ice
heave
ice cover
sea ice
Sea ice
ice breakup
vigilance
magnetometer
Kalman filter
sea
open water
Springs (water)
harbor
autumn
Magnetometers
Ports and harbors
magnetic field

Cite this

Doble, M. J., Wilkinson, J., Valcic, L., Robst, J., Tait, A., Preston, M., ... Wadhams, P. (2017). Robust wavebuoys for the marginal ice zone: Experiences from a large persistent array in the Beaufort Sea. Elementa, 5, [47]. https://doi.org/10.1525/elementa.233
Doble, Martin J ; Wilkinson, Jeremy ; Valcic, Lovro ; Robst, Jeremy ; Tait, Andrew ; Preston, Mark ; Bidlot, Jean-Raymond ; Hwang, Byonjun ; Maksym, Ted ; Wadhams, Peter. / Robust wavebuoys for the marginal ice zone : Experiences from a large persistent array in the Beaufort Sea. In: Elementa. 2017 ; Vol. 5.
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Doble, MJ, Wilkinson, J, Valcic, L, Robst, J, Tait, A, Preston, M, Bidlot, J-R, Hwang, B, Maksym, T & Wadhams, P 2017, 'Robust wavebuoys for the marginal ice zone: Experiences from a large persistent array in the Beaufort Sea', Elementa, vol. 5, 47. https://doi.org/10.1525/elementa.233

Robust wavebuoys for the marginal ice zone : Experiences from a large persistent array in the Beaufort Sea. / Doble, Martin J; Wilkinson, Jeremy; Valcic, Lovro; Robst, Jeremy; Tait, Andrew; Preston, Mark; Bidlot, Jean-Raymond; Hwang, Byonjun; Maksym, Ted; Wadhams, Peter.

In: Elementa, Vol. 5, 47, 21.08.2017.

Research output: Contribution to journalArticle

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T1 - Robust wavebuoys for the marginal ice zone

T2 - Elementa

AU - Doble, Martin J

AU - Wilkinson, Jeremy

AU - Valcic, Lovro

AU - Robst, Jeremy

AU - Tait, Andrew

AU - Preston, Mark

AU - Bidlot, Jean-Raymond

AU - Hwang, Byonjun

AU - Maksym, Ted

AU - Wadhams, Peter

PY - 2017/8/21

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N2 - An array of novel directional wavebuoys was designed and deployed into the Beaufort Sea ice cover in March 2014, as part of the Office of Naval Research Marginal Ice Zone experiment. The buoys were designed to drift with the ice throughout the year and monitor the expected breakup and retreat of the ice cover, forced by waves travelling into the ice from open water. Buoys were deployed from fast-and-light air-supported ice camps, based out of Sachs Harbour on Canada’s Banks Island, and drifted westwards with the sea ice over the course of spring, summer and autumn, as the ice melted, broke up and finally re-froze. The buoys transmitted heave, roll and pitch timeseries at 1 Hz sample frequency over the course of up to eight months, surviving both convergent ice dynamics and significant waves-in-ice events. Twelve of the 19 buoys survived until their batteries were finally exhausted during freeze-up in late October/November. Ice impact was found to have contaminated a significant proportion of the Kalman-filter-derived heave records, and these bad records were removed with reference to raw x/y/z accelerations. The quality of magnetometer-derived buoy headings at the very high magnetic field inclinations close to the magnetic pole was found to be generally acceptable, except in the case of four buoys which had probably suffered rough handling during transport to the ice. In general, these new buoys performed as expected, though vigilance as to the veracity of the output is required.

AB - An array of novel directional wavebuoys was designed and deployed into the Beaufort Sea ice cover in March 2014, as part of the Office of Naval Research Marginal Ice Zone experiment. The buoys were designed to drift with the ice throughout the year and monitor the expected breakup and retreat of the ice cover, forced by waves travelling into the ice from open water. Buoys were deployed from fast-and-light air-supported ice camps, based out of Sachs Harbour on Canada’s Banks Island, and drifted westwards with the sea ice over the course of spring, summer and autumn, as the ice melted, broke up and finally re-froze. The buoys transmitted heave, roll and pitch timeseries at 1 Hz sample frequency over the course of up to eight months, surviving both convergent ice dynamics and significant waves-in-ice events. Twelve of the 19 buoys survived until their batteries were finally exhausted during freeze-up in late October/November. Ice impact was found to have contaminated a significant proportion of the Kalman-filter-derived heave records, and these bad records were removed with reference to raw x/y/z accelerations. The quality of magnetometer-derived buoy headings at the very high magnetic field inclinations close to the magnetic pole was found to be generally acceptable, except in the case of four buoys which had probably suffered rough handling during transport to the ice. In general, these new buoys performed as expected, though vigilance as to the veracity of the output is required.

KW - sea-ice

KW - waves

KW - Arctic

U2 - 10.1525/elementa.233

DO - 10.1525/elementa.233

M3 - Article

VL - 5

JO - Elementa

JF - Elementa

SN - 2325-1026

M1 - 47

ER -