Thermal and compositional stratification of the inner core
نویسندگان
چکیده
منابع مشابه
Thermal and compositional evolution of the core
Synopsis This chapter examines the thermal and compositional evolution of the Earth’s core, from shortly after its formation to the present day. The initial state and composition of the core were determined mainly by the manner in which the Earth accreted. The initial core temperature was high enough to produce lower-mantle melting and may have dissolved substantial quantities of elements (such...
متن کاملCompositional instability of Earth’s solid inner core
[1] All models that invoke convection to explain the observed seismic variations in Earth’s inner core require unstable inner core stratification. Previous work has assumed that chemical effects are stabilizing and focused on thermal convection, but recent calculations indicate that the thermal conductivity at core temperatures and pressures is so large that the inner core must cool entirely by...
متن کاملthe analysis of the role of the speech acts theory in translating and dubbing hollywood films
از محوری ترین اثراتی که یک فیلم سینمایی ایجاد می کند دیالوگ هایی است که هنرپیش گان فیلم میگویند. به زعم یک فیلم ساز, یک شیوه متأثر نمودن مخاطب از اثر منظوره نیروی گفتارهای گوینده, مثل نیروی عاطفی, ترس آور, غم انگیز, هیجان انگیز و غیره, است. این مطالعه به بررسی این مسأله مبادرت کرده است که آیا نیروی فراگفتاری هنرپیش گان به مثابه ی اعمال گفتاری در پنج فیلم هالیوودی در نسخه های دوبله شده باز تولید...
15 صفحه اولThe inner inner core of Earth.
T solid inner core (Fig. 1) is the most remote and enigmatic part of our planet, and, next to the crust, is the smallest ‘‘official’’ subdivision of Earth’s interior. It was discovered in 1936 (1), and by 1972 it was established that it was solid, albeit with a very small rigidity (2–4). By 1993 it had been established that it was crystalline (5). The inner core is isolated from the rest of Ear...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Comptes Rendus Geoscience
سال: 2014
ISSN: 1631-0713
DOI: 10.1016/j.crte.2014.04.005