DOI: 10.5194/tc-14-2819-2020
论文题名: A kinematic formalism for tracking ice-ocean mass exchange on the Earth's surface and estimating sea-level change
作者: Adhikari S. ; Ivins E.R. ; Larour E. ; Caron L. ; Seroussi H.
刊名: Cryosphere
ISSN: 19940416
出版年: 2020
卷: 14, 期: 9 起始页码: 2819
结束页码: 2833
语种: 英语
英文关键词: bedrock
; floating ice
; geophysics
; ice sheet
; ice thickness
; kinematics
; sea level
; sea level change
; solid Earth
; timescale
英文摘要: Polar ice sheets are important components of the Earth system. As the geometries of land, ocean and ice sheets evolve, they must be consistently captured within the lexicon of geodesy. Understanding the interplay between the processes such as ice-sheet dynamics, solid-Earth deformation, and sea-level adjustment requires both geodetically consistent and mass-conserving descriptions of evolving land and ocean domains, grounded ice sheets and floating ice shelves, and their respective interfaces. Here we present mathematical descriptions of a generic level set that can be used to track both the grounding lines and coastlines, in light of ice-ocean mass exchange and complex feedbacks from the solid Earth and sea level. We next present a unified method to accurately compute the sea-level contribution of evolving ice sheets based on the change in ice thickness, bedrock elevation and mean sea level caused by any geophysical processes. Our formalism can be applied to arbitrary geometries and at all timescales. While it can be used for applications with modeling, observations and the combination of two, it is best suited for Earth system models, comprising ice sheets, solid Earth and sea level, that seek to conserve mass. © 2020 Author(s). Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/164385
Appears in Collections: 气候变化与战略
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作者单位: Jet Propulsion Laboratory, California Institute of Technology, Pasadena, CA 91109, United States
Recommended Citation:
Adhikari S.,Ivins E.R.,Larour E.,et al. A kinematic formalism for tracking ice-ocean mass exchange on the Earth's surface and estimating sea-level change[J]. Cryosphere,2020-01-01,14(9)