DOI: 10.1002/grl.50906
论文题名: Two-dimensional viscosity structure of the northeastern Japan islands arc-trench system
作者: Muto J. ; Shibazaki B. ; Ito Y. ; Iinuma T. ; Ohzono M. ; Matsumoto T. ; Okada T.
刊名: Geophysical Research Letters
ISSN: 0094-8581
EISSN: 1944-8312
出版年: 2013
卷: 40, 期: 17 起始页码: 4604
结束页码: 4608
语种: 英语
英文关键词: postseismic deformation
; Tohoku-Oki earthquake
Scopus关键词: 2011 Tohoku-Oki earthquakes
; Geothermal gradients
; Lithospheric structure
; Postseismic deformation
; Spatial and temporal resolutions
; Structural heterogeneity
; Tohoku-Oki earthquakes
; Viscoelastic relaxation
; Deformation
; Earthquakes
; Two dimensional
; Viscosity
; deformation
; earthquake
; geothermal gradient
; lithospheric structure
; steady-state equilibrium
; subduction zone
; Tohoku earthquake 2011
; trench
; viscosity
; Japan
英文摘要: Two-dimensional viscosity profiles were constructed for the northeastern Japan islands arc-trench system covering the source area of the 2011 Tohoku-Oki earthquake. From seismologically determined models of lithospheric structure, experimentally derived constitutive laws of various rocks, and densely measured geothermal gradient data, we have predicted the steady state effective viscosity across the subduction zone. The profile reveals strong lateral viscosity gradients both parallel and normal to the trench axis. The detailed viscosity structures presented here contribute to accurate evaluation of viscoelastic relaxation components when modeling geodetically measured postseismic deformation at high spatial and temporal resolution. Key Points Two-dimensional realistic viscosity profiles of the NE Japan were proposed Profiles include thermal and structural heterogeneities of the NE Japan Evaluation of viscous relaxation component requires realistic viscosity structure ©2013. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84883686557&doi=10.1002%2fgrl.50906&partnerID=40&md5=d544fd130f9396ff8b1358e5a0ae313c
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/5845
Appears in Collections: 气候减缓与适应
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作者单位: Tohoku University, Aramaki 6-3, Aoba-ku, Sendai 980-8577, Miyagi, Japan
Recommended Citation:
Muto J.,Shibazaki B.,Ito Y.,et al. Two-dimensional viscosity structure of the northeastern Japan islands arc-trench system[J]. Geophysical Research Letters,2013-01-01,40(17).