Estimating global subduction mass transport

GSTDTAP

项目编号	1720839
	Estimating global subduction mass transport
	Thorsten Becker
主持机构	University of Texas at Austin
项目开始年	2016
	2016-11-23
项目结束日期	2017-08-31
资助机构	US-NSF
项目类别	Standard Grant
项目经费	85972(USD)
国家	美国
语种	英语
英文摘要	This project focuses on slab mass transport into the lower mantle. It will, 1), expand the range of constraints on the degree of slab stagnation, e.g. by detailed analysis of transition zone thickness as well as hypothesis-driven reinversion of seismological data; 2), construct, by means of further software development, regional dynamic models and simplified global parameterizations for stagnation systematics in a thermo-chemical, multi-phase transition mantle system; and, 3), benchmark these computational convection models for vertical and horizontal transport. A graduate student from an under-represented group will be trained in interdisciplinary research. All project software will be developed openly and shared freely online. The tomographic inversion and modeling tools will be implemented into the Solid Earth Teaching and Research Environment software framework, allowing data-driven hypothesis testing for entirely different geodynamic questions and facilitating the training of Earth science students in interdisciplinary research. Better estimates of the slab flux, over time and with error bars, will help to constrain geochemical mixing and thermal Earth evolution models. The study will contribute to the use of slabs for absolute plate-tectonic reference frames, and slab dynamics has other, broad implications such as on net rotations of the lithosphere with respect to the lower mantle, interactions with the super-continental cycle, and sealevel variations.
来源学科分类	Geosciences - Earth Sciences
文献类型	项目
条目标识符	http://119.78.100.173/C666/handle/2XK7JSWQ/70596
专题	环境与发展全球科技态势
推荐引用方式 GB/T 7714	Thorsten Becker.Estimating global subduction mass transport.2016.