Three-dimensional imaging of waves and floes in the marginal ice zone during a cyclone

被引：33

作者：

Alberello, Alberto ^{[1
,2
,14
]}

Bennetts, Luke G. ^{[1
]}

Onorato, Miguel ^{[3
,4
]}

Vichi, Marcello ^{[5
,6
]}

MacHutchon, Keith ^{[7
]}

Eayrs, Clare ^{[8
]}

Ntamba, Butteur Ntamba ^{[9
]}

Benetazzo, Alvise ^{[10
]}

Bergamasco, Filippo ^{[11
]}

Nelli, Filippo ^{[12
]}

Pattani, Rohinee ^{[13
]}

Clarke, Hans ^{[2
]}

Tersigni, Ippolita ^{[2
]}

Toffoli, Alessandro ^{[2
]}

机构：

[1] Univ Adelaide, Adelaide, SA 5005, Australia

[2] Univ Melbourne, Parkville, Vic 3010, Australia

[3] Univ Torino, I-10125 Turin, Italy

[4] Ist Nazl Fis Nucl, I-10125 Turin, Italy

[5] Univ Cape Town, Dept Oceanog, ZA-7701 Rondebosch, South Africa

[6] Univ Cape Town, Marine & Antarctic Res Ctr Innovat & Sustainabil, ZA-7701 Rondebosch, South Africa

[7] Univ Cape Town, Dept Civil Engn, ZA-7701 Rondebosch, South Africa

[8] New York Univ Abu Dhabi, Abu Dhabi, U Arab Emirates

[9] Cape Peninsula Univ Technol, ZA-7535 Cape Town, South Africa

[10] CNR, Ist Sci Marine, I-30122 Venice, Italy

[11] Univ Ca Foscari, I-30123 Venice, Italy

[12] Swinburne Univ Technol, Hawthorn, Vic 3022, Australia

[13] Atkins, London SW1E 5BY, England

[14] Univ East Anglia, Norwich NR4 7TJ, Norfolk, England

来源：

NATURE COMMUNICATIONS | 2022年 / 13卷 / 01期

基金：

新加坡国家研究基金会; 澳大利亚研究理事会; 欧盟地平线“2020”;

关键词：

ANTARCTIC SEA-ICE; SIZE DISTRIBUTION; OCEAN WAVES; ATTENUATION; PROPAGATION; MODEL; TRANSECTS; SPECTRA; BREAKUP;

D O I：

10.1038/s41467-022-32036-2

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

Unprecedented 3D imaging of waves and sea ice floes from a moving icebreaker in the Antarctic marginal ice zone during a polar cyclone reveals a complex wind-plus-swell sea state, where contrasting ice-driven attenuation and wind forcing coexist. The marginal ice zone is the dynamic interface between the open ocean and consolidated inner pack ice. Surface gravity waves regulate marginal ice zone extent and properties, and, hence, atmosphere-ocean fluxes and ice advance/retreat. Over the past decade, seminal experimental campaigns have generated much needed measurements of wave evolution in the marginal ice zone, which, notwithstanding the prominent knowledge gaps that remain, are underpinning major advances in understanding the region's role in the climate system. Here, we report three-dimensional imaging of waves from a moving vessel and simultaneous imaging of floe sizes, with the potential to enhance the marginal ice zone database substantially. The images give the direction-frequency wave spectrum, which we combine with concurrent measurements of wind speeds and reanalysis products to reveal the complex multi-component wind-plus-swell nature of a cyclone-driven wave field, and quantify evolution of large-amplitude waves in sea ice.

引用

页数：11

共 73 条

[1] Drift of Pancake Ice Floes in the Winter Antarctic Marginal Ice Zone During Polar Cyclones [J].