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| DOI | 10.5194/tc-11-117-2017 |
| Semi-brittle rheology and ice dynamics in DynEarthSol3D | |
| Logan L.C.; Lavier L.L.; Choi E.; Tan E.; Catania G.A. | |
| 发表日期 | 2017 |
| ISSN | 19940416 |
| 卷号 | 11期号:1 |
| 英文摘要 | We present a semi-brittle rheology and explore its potential for simulating glacier and ice sheet deformation using a numerical model, DynEarthSol3D (DES), in simple, idealized experiments. DES is a finite-element solver for the dynamic and quasi-static simulation of continuous media. The experiments within demonstrate the potential for DES to simulate ice failure and deformation in dynamic regions of glaciers, especially at quickly changing boundaries like glacier termini in contact with the ocean. We explore the effect that different rheological assumptions have on the pattern of flow and failure. We find that the use of a semi-brittle constitutive law is a sufficient material condition to form the characteristic pattern of basal crevasse-aided pinch-and-swell geometry, which is observed globally in floating portions of ice and can often aid in eroding the ice sheet margins in direct contact with oceans. © Author(s) 2017. |
| 学科领域 | brittle deformation; constitutive equation; crevasse; finite element method; floating ice; flow pattern; glacier dynamics; ice mechanics; ice sheet; numerical model; rheology |
| 语种 | 英语 |
| scopus关键词 | brittle deformation; constitutive equation; crevasse; finite element method; floating ice; flow pattern; glacier dynamics; ice mechanics; ice sheet; numerical model; rheology |
| 来源期刊 | Cryosphere
 |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/119462 |
| 作者单位 | Institute for Computational and Engineering Science, University of Texas, Austin, 78712, United States; Department of Geological Science, University of Texas, Austin, 78712, United States; Institute for Geophysics, University of Texas, Austin, 78758, United States; Center for Earthquake Research and Information, University of Memphis, Memphis, 38152, United States; Institute of Earth Sciences, Academia Sinica, No. 128, Section 2, Taipei, Taiwan |
| 推荐引用方式 GB/T 7714 | Logan L.C.,Lavier L.L.,Choi E.,et al. Semi-brittle rheology and ice dynamics in DynEarthSol3D[J],2017,11(1). |
| APA | Logan L.C.,Lavier L.L.,Choi E.,Tan E.,&Catania G.A..(2017).Semi-brittle rheology and ice dynamics in DynEarthSol3D.Cryosphere,11(1). |
| MLA | Logan L.C.,et al."Semi-brittle rheology and ice dynamics in DynEarthSol3D".Cryosphere 11.1(2017). |
| 条目包含的文件 | 条目无相关文件。 | |||||
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