A comparison between three-dimensional, transient, thermomechanically coupled first-order and Stokes ice flow models

doi:10.1017/jog.2022.77

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	A comparison between three-dimensional, transient, thermomechanically coupled first-order and Stokes ice flow models
	Yan, Zhan 1; Leng, Wei 2; Wang, Yuzhe 3; Xiao, Cunde 1; Zhang, Tong 1
	2022-10-03
发表期刊	JOURNAL OF GLACIOLOGY
ISSN	0022-1430
页码	12
摘要	In this study, we investigate the differences between two transient, three-dimensional, thermomechanically coupled ice-sheet models, namely, a first-order approximation model (FOM) and a 'full' Stokes ice-sheet model (FSM) under the same numerical framework. For all numerical experiments, we take the FSM outputs as the reference values and calculate the mean relative errors in the velocity and temperature fields for the FOM over 100 years. Four different boundary conditions (ice slope, geothermal heat flux, basal topography and basal sliding) are tested, and by changing these parameters, we verify the thermomechanical behavior of the FOM and discover that the velocity and temperature biases of the FOM generally increase with increases in the ice slope, geothermal heat flux, undulation amplitude of the ice base, and with the existence of basal sliding. In addition, the model difference between the FOM and FSM may accumulate over time, and the spatial distribution patterns of the relative velocity and temperature errors are in good agreement.
关键词	Glacier modeling glacier flow glaciological model experiments ice-sheet modeling ice dynamics
DOI	10.1017/jog.2022.77
收录类别	SCI
语种	英语
资助项目	National Key Research and Development Program of China[2018YFC1406104] ; State Key Laboratory of Earth Surface Processes and Resource Ecology[2021-TS-06] ; State Key Laboratory of Earth Surface Processes and Resource Ecology[2021-KF-06] ; State Key Laboratory of Earth Surface Processes and Resource Ecology[2022-ZD-05] ; Fundamental Research Funds for the Central Universities[2021NTST16]
WOS研究方向	Physical Geography ; Geology
WOS类目	Geography, Physical ; Geosciences, Multidisciplinary
WOS记录号	WOS:000863531200001
出版者	CAMBRIDGE UNIV PRESS
引用统计
文献类型	期刊论文
条目标识符	http://ir.amss.ac.cn/handle/2S8OKBNM/60845
专题	中国科学院数学与系统科学研究院
通讯作者	Yan, Zhan
作者单位	1.Beijing Normal Univ, State Key Lab Earth Surface Proc & Resource Ecol, Beijing 100875, Peoples R China 2.Chinese Acad Sci, State Key Lab Sci & Engn Comp, Beijing 100190, Peoples R China 3.Shandong Normal Univ, Coll Geog & Environm, Jinan 250014, Peoples R China
推荐引用方式 GB/T 7714	Yan, Zhan,Leng, Wei,Wang, Yuzhe,et al. A comparison between three-dimensional, transient, thermomechanically coupled first-order and Stokes ice flow models[J]. JOURNAL OF GLACIOLOGY,2022:12.
APA	Yan, Zhan,Leng, Wei,Wang, Yuzhe,Xiao, Cunde,&Zhang, Tong.(2022).A comparison between three-dimensional, transient, thermomechanically coupled first-order and Stokes ice flow models.JOURNAL OF GLACIOLOGY,12.
MLA	Yan, Zhan,et al."A comparison between three-dimensional, transient, thermomechanically coupled first-order and Stokes ice flow models".JOURNAL OF GLACIOLOGY (2022):12.