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Swirls and scoops: Ice base melt revealed by multibeam imagery of an Antarctic ice shelf.
Wåhlin, Anna; Alley, Karen E; Begeman, Carolyn; Hegrenæs, Øyvind; Yuan, Xiaohan; Graham, Alastair G C; Hogan, Kelly; Davis, Peter E D; Dotto, Tiago S; Eayrs, Clare; Hall, Robert A; Holland, David M; Kim, Tae Wan; Larter, Robert D; Ling, Li; Muto, Atsuhiro; Pettit, Erin C; Schmidt, Britney E; Snow, Tasha; Stedt, Filip; Washam, Peter M; Wahlgren, Stina; Wild, Christian; Wellner, Julia; Zheng, Yixi; Heywood, Karen J.
Afiliación
  • Wåhlin A; Department of Marine Sciences, University of Gothenburg, Gothenburg, Sweden.
  • Alley KE; Centre for Earth Observation Science, University of Manitoba, Winnipeg, Canada.
  • Begeman C; Fluid Dynamics and Solid Mechanics, Los Alamos National Laboratory, Los Alamos, NM, USA.
  • Hegrenæs Ø; Department of Uncrewed Platforms, Kongsberg Discovery, Horten, Norway.
  • Yuan X; Department of Marine Sciences, University of Gothenburg, Gothenburg, Sweden.
  • Graham AGC; College of Surveying and Geo-Informatics, Tongji University, Shanghai, China.
  • Hogan K; School of Earth and Environmental Sciences, Cardiff University, Main Building, Park Place, Cardiff CF10 3AT, Wales, UK.
  • Davis PED; British Antarctic Survey, Cambridge, UK.
  • Dotto TS; British Antarctic Survey, Cambridge, UK.
  • Eayrs C; National Oceanography Centre, Southampton, UK.
  • Hall RA; Korea Polar Research Institute, Incheon, Republic of Korea.
  • Holland DM; Centre for Ocean and Atmospheric Sciences, School of Environmental Sciences, University of East Anglia, Norwich, UK.
  • Kim TW; Environmental Fluid Dynamics Laboratory, New York University, New York, NY, USA.
  • Larter RD; Korea Polar Research Institute, Incheon, Republic of Korea.
  • Ling L; British Antarctic Survey, Cambridge, UK.
  • Muto A; Division of Robotics, Perception and Learning, KTH Royal Institute of Technology, Stockholm, Sweden.
  • Pettit EC; Department of Earth and Environmental Science, Temple University, Philadelphia, PA, USA.
  • Schmidt BE; College of Earth, Ocean, and Atmospheric Sciences, Oregon State University, Corvallis, OR, USA.
  • Snow T; Departments of Astronomy and of Earth and Atmospheric Sciences, Cornell University, Ithaca, NY, USA.
  • Stedt F; Department of Geophysics, Colorado School of Mines, 1500 Illinois St, Golden, CO, USA.
  • Washam PM; Department of Marine Sciences, University of Gothenburg, Gothenburg, Sweden.
  • Wahlgren S; Departments of Astronomy and of Earth and Atmospheric Sciences, Cornell University, Ithaca, NY, USA.
  • Wild C; Department of Marine Sciences, University of Gothenburg, Gothenburg, Sweden.
  • Wellner J; Department for Geoscience, University of Tübingen, Tübingen, Germany.
  • Zheng Y; Department of Earth and Atmospheric Sciences, University of Houston, Houston, TX, USA.
  • Heywood KJ; Centre for Ocean and Atmospheric Sciences, School of Environmental Sciences, University of East Anglia, Norwich, UK.
Sci Adv ; 10(31): eadn9188, 2024 Aug 02.
Article en En | MEDLINE | ID: mdl-39083596
ABSTRACT
Knowledge gaps about how the ocean melts Antarctica's ice shelves, borne from a lack of observations, lead to large uncertainties in sea level predictions. Using high-resolution maps of the underside of Dotson Ice Shelf, West Antarctica, we reveal the imprint that ice shelf basal melting leaves on the ice. Convection and intermittent warm water intrusions form widespread terraced features through slow melting in quiescent areas, while shear-driven turbulence rapidly melts smooth, eroded topographies in outflow areas, as well as enigmatic teardrop-shaped indentations that result from boundary-layer flow rotation. Full-thickness ice fractures, with bases modified by basal melting and convective processes, are observed throughout the area. This new wealth of processes, all active under a single ice shelf, must be considered to accurately predict future Antarctic ice shelf melt.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Sci Adv Año: 2024 Tipo del documento: Article País de afiliación: Suecia Pais de publicación: Estados Unidos
Texto completo
Añadir a Mi BVS
Imprimir
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: Sci Adv Año: 2024 Tipo del documento: Article País de afiliación: Suecia Pais de publicación: Estados Unidos