عنوان ترجمه فایل فارسی: رابطه سرعت برشی,درجه حرارت ،روابط کاهندگی و ویسکوزیته در قسمت کم عمق از گوشته
عنوان نسخه انگلیسی: The Relationship Between Shear Wave
Velocity,temperature,attenuation and viscosity in the shallow part the
mantle
مرتبط با رشته های : عمران – زمین شناسی
تعداد صفحات مقاله فارسی: ۳۰ صفحه
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قسمتی از متن انگلیسی:
Fig. 1. (a) Sketch to show the model used
to determine the lithospheric thickness. Heat transport in the
mechanical boundary layer is entirely by conduction, and heat generated
by radioactive decay in the crust causes the temperature gradient to
decrease with depth. Heat transport within the thermal boundary layer
changes from being conductive at its top to being convective at its base
at 162 km. At greater depths the temperature gradient is isentropic
with a potential temperature of 1315 ◦C. The base of the lithosphere is
defined as the depth (126 km) at which the temperature on the conductive
geothermal would have a potential temperature of 1315 ◦C. The geotherm
that takes account of convection is shown as a thin dashed line, which
only differs appreciably from the conductive profile, shown as the heavy
solid line, near the base of the lithosphere. (b) and (c) show
temperature estimates from PM_v2_2012 at two locations in western
Africa. Only the estimates in the shaded regions are used to fit
geotherms and hence determine the lithospheric thicknesses using the
model in (a). The corresponding SV profiles are shown in (d) and (e)
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