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- W4220818716 abstract "<p>Constraining the dynamic topography of Antarctica and its surrounding seas is required in order to gauge the pattern of mantle convection beneath this continent. However, such studies are limited by this continent&#8217;s geographical remoteness, by the lack of bedrock exposure and by extensive glaciation. Oceanic residual depth measurements provide a well-established proxy for offshore dynamic topography. Here, over 400 seismic reflection profiles have been interpreted to calculate residual depth measurements throughout the oceans that surround Antarctica. These measurements have been carefully corrected for sedimentary loading and, where possible, for crustal thickness variations. When combined with previous global compilations, these new residual depths significantly improve spatial resolution across the region, providing excellent constraints on dynamic topographic basins and swells. In the continental realm, an improved understanding of dynamic topography will help to quantify temporal and spatial variations in ice sheet stability. Volcanism and slow shear wave velocity anomalies beneath the continent indicate dynamic support. &#160;By mapping offshore dynamic topography to a higher resolution, greater context is provided for future onshore studies.</p>" @default.
- W4220818716 created "2022-04-03" @default.
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- W4220818716 date "2022-03-28" @default.
- W4220818716 modified "2023-09-29" @default.
- W4220818716 title "Dynamic topographic observations of Antarctica and its fringing oceanic basins" @default.
- W4220818716 doi "https://doi.org/10.5194/egusphere-egu22-13092" @default.
- W4220818716 hasPublicationYear "2022" @default.
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