Importance of global spherical geometry for studying slab dynamics and evolution in models with data assimilation
文献类型：期刊论文
| 作者 | Peng, Diandian2,3; Liu, Lijun1,2 |
| 刊名 | EARTH-SCIENCE REVIEWS
 |
| 出版日期 | 2023-06-01 |
| 卷号 | 241页码:17 |
| 关键词 | Subduction Mantle flow Global model Regional model Data assimilation |
| ISSN号 | 0012-8252 |
| DOI | 10.1016/j.earscirev.2023.104414 |
| 英文摘要 | Numerical modeling of subduction has proved increasingly important in understanding the evolution of Earth's internal dynamics and surface tectonic responses. A key criterion in judging models is their capability in matching both past plate tectonic constraints and the present-day mantle structures. In the past decades, most such models covered a regional mantle domain due to computational costs, while only recently sophisticated global spherical simulations became possible. Here we evaluate the effects of chosen model domain and applied boundary conditions in regional simulations on their resulting model results, by comparing them with more natural global simulations. All these models are based on the same sequential data-assimilation method and adopt the same plate tectonic history as surface boundary conditions. The only difference is that the regional models cover different geographic regions, representing a subset of the global one that covers the entire Earth. Besides illustrating the general impacts of chosen model setup on the resulting mantle evolution, we also make suggestions on the applicability of using regional models to replicate past subduction in four major circumPacific regions. The results show that the slabs from the global model match seismic tomography much better than the regional results in East Asia and South America; the main reason is that the regional models prohibit large-scale mantle flow as that in the global case, due to the non-penetrating side walls cutting off far-field forces. This limitation of regional models cannot be resolved by varying the model domain. In contrast, for North America and Fiji-Tonga, global and regional models produce similar slab structures, both matching tomography. This reflects that their fast-retreating overriding plates play an important role on the regional mantle flow and slab dynamics. |
| WOS关键词 | MANTLE FLOW ; VERTICAL MOTION ; PLATE-MOTION ; SUBDUCTION ; CONVECTION ; TECTONICS ; TOMOGRAPHY ; TOPOGRAPHY ; SEGMENTATION ; PENETRATION |
| 资助项目 | NSF[EAR1554554] ; Green Postdoctoral Scholarship |
| WOS研究方向 | Geology |
| 语种 | 英语 |
| WOS记录号 | WOS:000982145600001 |
| 出版者 | ELSEVIER |
| 资助机构 | NSF ; NSF ; NSF ; NSF ; Green Postdoctoral Scholarship ; Green Postdoctoral Scholarship ; Green Postdoctoral Scholarship ; Green Postdoctoral Scholarship ; NSF ; NSF ; NSF ; NSF ; Green Postdoctoral Scholarship ; Green Postdoctoral Scholarship ; Green Postdoctoral Scholarship ; Green Postdoctoral Scholarship ; NSF ; NSF ; NSF ; NSF ; Green Postdoctoral Scholarship ; Green Postdoctoral Scholarship ; Green Postdoctoral Scholarship ; Green Postdoctoral Scholarship ; NSF ; NSF ; NSF ; NSF ; Green Postdoctoral Scholarship ; Green Postdoctoral Scholarship ; Green Postdoctoral Scholarship ; Green Postdoctoral Scholarship |
| 源URL | [http://ir.iggcas.ac.cn/handle/132A11/110924]  |
| 专题 | 地质与地球物理研究所_岩石圈演化国家重点实验室 |
| 通讯作者 | Peng, Diandian; Liu, Lijun |
| 作者单位 | 1.Chinese Acad Sci, Inst Geol & Geophys, State Key Lab Lithospher Evolut, Beijing, Peoples R China 2.Univ Illinois, Dept Geol, Urbana, IL 61820 USA 3.Univ Calif San Diego, Scripps Inst Oceanog, Inst Geophys & Planetary Phys, La Jolla, CA 92093 USA |
| 推荐引用方式 GB/T 7714 | Peng, Diandian,Liu, Lijun. Importance of global spherical geometry for studying slab dynamics and evolution in models with data assimilation[J]. EARTH-SCIENCE REVIEWS,2023,241:17. |
| APA | Peng, Diandian,&Liu, Lijun.(2023).Importance of global spherical geometry for studying slab dynamics and evolution in models with data assimilation.EARTH-SCIENCE REVIEWS,241,17. |
| MLA | Peng, Diandian,et al."Importance of global spherical geometry for studying slab dynamics and evolution in models with data assimilation".EARTH-SCIENCE REVIEWS 241(2023):17. |
入库方式： OAI收割
来源：地质与地球物理研究所
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