报告人：Anna Wåhlin（瑞典哥德堡大学，特聘教授）

时间：2024年6月3日（周一）13:30-15:00

地点：测绘馆401会议室

报告简介：

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. In this lecture basic physics of ice-ocean interaction inside the ice cavities will be explained and some new results from Dotson ice shelf, using high-resolution maps of the ice-base, will be shown. In Dotson ice shelf, convection and intermittent warm-water intrusions form widespread terraced forms 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.

报告人简介：

Anna Wåhlin (ORCID: https://orcid.org/0000-0003-1799-6476) is a Professor of Physical Oceanography at the Department of Marine Sciences, University of Gothenburg. Her research focus is in the field of Polar Oceanography, mostly in the Southern Ocean, and focused on dynamics of polar seas including physical oceanography, ocean circulation, topographic effects, ice shelf melt processes and air-sea-ice interaction. When Wåhlin was appointed professor in 2015 she became Sweden's first female full Professor of Oceanography.  Wåhlin is project leader for Sweden's national AUV infrastructure funded by the Knut and Alice Wallenberg Foundation. This AUV became the world's first to venture under Thwaites glacier, Antarctica, in 2019. Wåhlin was between 2015-2017 co-chair of the joint Scientific Committee on Antarctic Research (SCAR) and SCOR initiative Southern Ocean Observing System (SOOS). She is since 2021 an editor for the AGU journal Journal of Geophysical Research - Oceans, and served as Associate Editor for the journal Advances in Polar Science during 2016 - 2021. Her awards include receiving the Albert Wallin science prize from the Royal Society of Arts and Sciences (KKVS) in Gothenburg 2018, being a Fulbright Scholar (2007-2008),receiving a Crafoord Research Stipend from the Swedish Royal Academy of Science (2010), being a SCAR visiting professor (2013). In 2021 she was appointed Distinguished Professor by the Swedish Research Council, which will fund research about Antarctic ice shelves at the University of Gothenburg until 2031.