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| DOI | 10.1093/gji/ggae149 |
| Surface loading on a self-gravitating, linear viscoelastic Earth: moving beyond Maxwell | |
| Lau, H. C. P. | |
| 发表日期 | 2024 |
| ISSN | 0956-540X |
| EISSN | 1365-246X |
| 起始页码 | 237 |
| 结束页码 | 3 |
| 卷号 | 237期号:3 |
| 英文摘要 | Constitutive laws are a necessary ingredient in calculations of glacial isostatic adjustment (GIA) or other surface loading problems (e.g. loading by ocean tides). An idealized constitutive law governed by the Maxwell viscoelastic model is widely used but increasing attention is being directed towards more intricate constitutive laws that, in particular, include transient rheology. In this context, transient rheology collectively refers to dissipative mechanisms activated in addition to creep modelled by the Maxwell viscoelastic model. Consideration of such viscoelastic models in GIA is in its infancy and to encourage their wider use, we present constitutive laws for several experimentally derived transient rheologies and outline a flexible method in which to incorporate them into geophysical problems, such as the viscoelastic deformation of the Earth induced by surface loading. To further motivate this need, we demonstrate, via the Love number collocation method, how predictions of crustal displacement depart significantly between Earth models that adopt only Maxwell viscoelasticity and those with transient rheology. Throughout this paper, we highlight the differences in terminology and emphases between the rock mechanics, seismology and GIA communities, which have perhaps contributed towards the relative scarcity in integrating this broader and more realistic class of constitutive laws within GIA. We focus on transient rheology since the associated deformation has been demonstrated to operate on timescales that range from hours to decades. With ice mass loss enhanced at similar timescales as a consequence of anthropogenically caused climate change, the ability to model GIA with more accurate constitutive laws is an important tool to investigate such problems. |
| 英文关键词 | Elasticity and anelasticity; Loading of the Earth; Sea level change; Transient deformation; Rheology: mantle |
| 语种 | 英语 |
| WOS研究方向 | Geochemistry & Geophysics |
| WOS类目 | Geochemistry & Geophysics |
| WOS记录号 | WOS:001214436500001 |
| 来源期刊 | GEOPHYSICAL JOURNAL INTERNATIONAL
 |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/301330 |
| 作者单位 | Brown University |
| 推荐引用方式 GB/T 7714 | Lau, H. C. P.. Surface loading on a self-gravitating, linear viscoelastic Earth: moving beyond Maxwell[J],2024,237(3). |
| APA | Lau, H. C. P..(2024).Surface loading on a self-gravitating, linear viscoelastic Earth: moving beyond Maxwell.GEOPHYSICAL JOURNAL INTERNATIONAL,237(3). |
| MLA | Lau, H. C. P.."Surface loading on a self-gravitating, linear viscoelastic Earth: moving beyond Maxwell".GEOPHYSICAL JOURNAL INTERNATIONAL 237.3(2024). |
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