气候变化领域集成服务门户(CCPortal): A Transient Coupled Ice Flow-Damage Model to Simulate Iceberg Calving From Tidewater Outlet Glaciers

CCPortal

DOI	10.1029/2018MS001567
	A Transient Coupled Ice Flow-Damage Model to Simulate Iceberg Calving From Tidewater Outlet Glaciers
	Mercenier R.; Lüthi M.P.; Vieli A.
发表日期	2019
ISSN	19422466
起始页码	3057
结束页码	3072
卷号	11 期号:9
英文摘要	Iceberg calving, the detachment of an ice block at the glacier front, is the main process responsible for the dynamic mass loss from the ice sheets to the ocean. Understanding this process is essential to accurately predict ice sheet response to the future climate. We present a transient multiphysics finite-element model to simulate iceberg break-off and geometry evolution of a marine-terminating glacier. The model solves the coupled equations of ice flow, damage mechanics, oceanic melt, and geometry evolution on the same Lagrangian computational grid. A modeling sensitivity analysis shows that the choice of stress measure used for damage evolution strongly influences the resulting calving front geometries. Our analysis suggests that the von Mises stress measures produce the most realistic calving front geometry evolutions for tidewater glaciers. Submarine frontal melt is shown to have a strong impact on the calving front geometry. The presented multiphysics model includes all processes thus far shown to be relevant for the evolution of tidewater glaciers and can be readily adapted for 3-D and arbitrary bedrock geometries. ©2019. The Authors.
语种	英语
scopus关键词	Computational geometry; Glaciers; Sea ice; Computational grids; Coupled equation; Damage evolution; Damage mechanics; Model sensitivity analysis; Multi-physics modeling; Tidewater glaciers; Von Mises stress; Sensitivity analysis; bedrock; computer simulation; finite element method; ice flow; ice sheet; iceberg calving; sensitivity analysis; tidewater glacier
来源期刊	Journal of Advances in Modeling Earth Systems
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/156856
作者单位	Department of Geography, University of Zurich, Zurich, Switzerland
推荐引用方式 GB/T 7714	Mercenier R.,Lüthi M.P.,Vieli A.. A Transient Coupled Ice Flow-Damage Model to Simulate Iceberg Calving From Tidewater Outlet Glaciers[J],2019,11(9).
APA	Mercenier R.,Lüthi M.P.,&Vieli A..(2019).A Transient Coupled Ice Flow-Damage Model to Simulate Iceberg Calving From Tidewater Outlet Glaciers.Journal of Advances in Modeling Earth Systems,11(9).
MLA	Mercenier R.,et al."A Transient Coupled Ice Flow-Damage Model to Simulate Iceberg Calving From Tidewater Outlet Glaciers".Journal of Advances in Modeling Earth Systems 11.9(2019).