Despite considerable progress in seismology, mineral physics, geodynamics, paleomagnetism, and mathematical geophysics, Earth’s inner core structure and evolution remain enigmatic. One of the most significant issues is its thermal history and the curren
The structure of iron under the conditions of the Earth's inner core, Geophys. Res. Lett., 26, 1231-1234.Voˇcadlo, L., Brodholt, J., Alf`e, D., Price, G. D. & Gillan, M. J. 1999 The structure of iron under the conditions of the Earth's inner core. Geophys. Res. Lett...
However, computational simulations of such conditions are extremely challenging, and more attention has, therefore, been paid to the study of reactions between solid iron and elements depleted in the silicate earth, e.g. Xe, which is relevant to the understanding of the inner core crystallization ...
Finally, there is a solid innercore, which is mostly made of iron and is responsiblefor our planet's magnetic field(磁场)Since collecting samples from the core isimpossible, scientists study signals from seismicwaves as they pass through the Earth's structure.The waves of energy are caused by...
The Earth's Inner Core The Earth's inner core, whose temperatures go beyond 5,000 degrees, may not present images of a winter wonderland.1_ Before you rush to pack your skis, be aware that the "snowflakes (雪花)" are just composed of small pieces of iron!2 The crust is the outermos...
A. molten rock B. solid iron and nickel C. gas D. water 相关知识点: 试题来源: 解析 B。解析:地球的内核主要由固态的铁和镍组成。选项A,熔融的岩石主要存在于地幔中,而非内核;选项C,地球内核不是由气体组成的;选项D,水不可能是地球内核的主要组成部分。反馈...
A. iron and nickel B. rock and soil C. water and gas D. ice and snow 相关知识点: 试题来源: 解析 A。本题考查地球内部结构的知识。地球的内核主要由铁和镍组成,选项 B 岩石和土壤主要存在于地壳,选项 C 水和气体通常不在地球内核,选项 D 冰雪更不可能在内核。反馈...
The structure of Earth can be defined intwo ways: bymechanical propertiessuch as rheology, orchemically. 1. Mechanically, it can be divided intolithosphere,asthenosphere, mesospheric mantle, outer core, and the inner core. 2. Chemically, Earth can be divided into thecrust, upper mantle, lower...
In other words,we may live on top of a gigantic, “natural”nuclear power plant. A.size B. originC. structure D. shape 答案 B本文主要谈地球起源问题,故此处应填ongm。 结果二 题目 Earth’s Inner Core Scientists have long struggled to understand what lies at the planet’s center. Direct ...
The Earth's inner core plays a vital role in the dynamics of our planet and is itself strongly exposed to dynamic processes as evidenced by a complex pattern of elastic structure. To gain deeper insight into the nature of these processes we rely on a characterization of the physical properties...