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DOI | 10.1002/2018GL077494 |
Seasonal Surface Loading Helps Constrain Short-Term Viscosity of the Asthenosphere | |
Clarke, Peter J. | |
2018-03-16 | |
发表期刊 | GEOPHYSICAL RESEARCH LETTERS
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ISSN | 0094-8276 |
EISSN | 1944-8007 |
出版年 | 2018 |
卷号 | 45期号:5页码:2349-2351 |
文章类型 | Article |
语种 | 英语 |
国家 | England |
英文摘要 | Earth materials may display a range of rheological behaviors at different depths and over different timescales. The situation is particularly complex for postseismic relaxation in the uppermost mantle and lower crust, where it can be difficult to distinguish widespread viscous behavior from earthquake afterslip or localized deformation in shear zones over timescales of weeks to decades. By analyzing geodetic observations of seasonal surface mass loads and Earth's surface deformation in response, Chanard et al. (2018, https://doi.org/10.1002/2017GL076451) have established a globally averaged lower bound of 5 x 10(17) Pa s for the transient viscosity of a Burgers-rheology asthenosphere. This implies that lower viscosities inferred by some studies of postseismic relaxation must result from local departures from this global value, or be an artifact of additional afterslip or shear zone deformation. |
英文关键词 | viscoelastic loading asthenosphere transient viscosity postseismic seasonal |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000428402400026 |
WOS关键词 | GLACIAL ISOSTATIC-ADJUSTMENT ; GEODETIC OBSERVATIONS |
WOS类目 | Geosciences, Multidisciplinary |
WOS研究方向 | Geology |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/25954 |
专题 | 气候变化 |
作者单位 | Newcastle Univ, Sch Engn, Newcastle Upon Tyne, Tyne & Wear, England |
推荐引用方式 GB/T 7714 | Clarke, Peter J.. Seasonal Surface Loading Helps Constrain Short-Term Viscosity of the Asthenosphere[J]. GEOPHYSICAL RESEARCH LETTERS,2018,45(5):2349-2351. |
APA | Clarke, Peter J..(2018).Seasonal Surface Loading Helps Constrain Short-Term Viscosity of the Asthenosphere.GEOPHYSICAL RESEARCH LETTERS,45(5),2349-2351. |
MLA | Clarke, Peter J.."Seasonal Surface Loading Helps Constrain Short-Term Viscosity of the Asthenosphere".GEOPHYSICAL RESEARCH LETTERS 45.5(2018):2349-2351. |
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