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

doi:10.1017/jog.2022.77

	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
刊名	JOURNAL OF GLACIOLOGY
	2022-10-03
页码	12
关键词	Glacier modeling glacier flow glaciological model experiments ice-sheet modeling ice dynamics
ISSN号	0022-1430
DOI	10.1017/jog.2022.77
英文摘要	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.
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
语种	英语
出版者	CAMBRIDGE UNIV PRESS
WOS记录号	WOS:000863531200001
内容类型	期刊论文
源URL	[http://ir.amss.ac.cn/handle/2S8OKBNM/60844]
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.