DOI: 10.1002/2015GL063987
论文题名: Surface motions and intraplate continental deformation in Alaska driven by mantle flow
作者: Finzel E.S. ; Flesch L.M. ; Ridgway K.D. ; Holt W.E. ; Ghosh A.
刊名: Geophysical Research Letters
ISSN: 0094-9179
EISSN: 1944-8910
出版年: 2015
卷: 42, 期: 11 起始页码: 4350
结束页码: 4358
语种: 英语
英文关键词: Alaska
; continental deformation
; geodynamics
; mantle tractions
Scopus关键词: Deformation
; Digital storage
; Alaska
; Continental deformation
; Convergent plate boundaries
; Geodynamic modeling
; Mantle convection
; North american plates
; Plate boundaries
; Surface deformation
; Geodynamics
英文摘要: The degree to which the lithosphere and mantle are coupled and contribute to surface deformation beneath continental regions remains a fundamental question in the field of geodynamics. Here we use a new approach with a surface deformation field constrained by GPS, geologic, and seismicity data, together with a lithospheric geodynamic model, to solve for tractions inferred to be generated by mantle convection that (1) drive extension within interior Alaska generating southward directed surface motions toward the southern convergent plate boundary, (2) result in accommodation of the relative motions between the Pacific and North America in a comparatively small zone near the plate boundary, and (3) generate the observed convergence within the North American plate interior in the Mackenzie mountains in northwestern Canada. The evidence for deeper mantle influence on surface deformation beneath a continental region suggests that this mechanism may be an important contributing driver to continental plate assemblage and breakup. ©2015. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84934434908&doi=10.1002%2f2015GL063987&partnerID=40&md5=03cdec96de30cca5ef3b33e807f7d092
Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/8795
Appears in Collections: 科学计划与规划 气候变化与战略
There are no files associated with this item.
作者单位: Department of Earth and Environmental Sciences, University of Iowa, Iowa City, IA, United States
Recommended Citation:
Finzel E.S.,Flesch L.M.,Ridgway K.D.,et al. Surface motions and intraplate continental deformation in Alaska driven by mantle flow[J]. Geophysical Research Letters,2015-01-01,42(11).