کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
4688747 | 1635810 | 2006 | 10 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Role of background viscosity in the investigation of postglacial rebound induced crustal motion in a laterally heterogeneous mantle
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
علوم زمین و سیارات
فرآیندهای سطح زمین
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
The effect of laterally homogeneous background viscosity profile on postglacial rebound induced surface motion on a laterally heterogeneous earth is investigated. The lateral viscosity perturbations are inferred from seismic tomography model S20A. Three different background viscosity models are investigated-they differ in lithospheric thickness and the viscosity jump across the 670Â km discontinuity. The coupled Laplace-finite-element method is used to calculate present-day crustal motion on a spherical, self-gravitating, incompressible, viscoelastic earth with self-gravitating oceans, induced by the ICE-4G deglaciation model. Results show that background viscosity significantly affects the magnitude of the uplift rate, and both direction and magnitude of the tangential velocity. Thus a good handle on the background viscosity is very important in the study and interpretation of glacial isostatic data.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Geodynamics - Volume 42, Issues 1â3, AugustâOctober 2006, Pages 85-94
Journal: Journal of Geodynamics - Volume 42, Issues 1â3, AugustâOctober 2006, Pages 85-94
نویسندگان
Hansheng Wang, Patrick Wu,