Composition of the Mantle and Core

Composition of the Mantle and Core
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地幔和地核的组成

DOI:
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发表时间:
1977
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影响因子:
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通讯作者:
D. L. Anderson
D. L. Anderson
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文献类型:
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作者:
D. L. Anderson

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自由振荡、面波频散、旅行时和高分辨率天体 波浪数据与实验室数据相结合,提供了对成分的限制 以及地球上不同地区的状况。Anderson&Hart(1976)最近 提出了一个基于大体自由振动和旅行时的地球模型。 数据。这个模型被命名为C2,合并了地幔和地核的结构 使用特殊的高分辨率体波技术发现的。大部分结构都是 超出了地球总数据的分辨率,如自由振荡周期和 不同的旅行时间。该模型,如图1所示,提供了适当的 为讨论地球各地区的组成奠定了基础。型号 Gilbert&Dziewonski(1975)的1066A,基于更多的正常模式数据,但更少 体波数据,也显示了。
Free oscillations, surface wave dispersion, travel times, and high-resolution body wave data, combined with laboratory data, provide constraints on the composition and state of the various regions of the earth. Anderson & Hart (1976) have recently presented an earth model based on a large body of free oscillation and travel time data. This model, designated C2, incorporates structure in both the mantle and core found using special high-resolution body wave techniques. Much of the structure is beyond the resolving power of such gross earth data as free oscillation periods and differential travel times. This model, shown in Figure 1, provides an appropriate basis for a discussion of the composition of the various regions of the earth. Model 1066A of Gilbert & Dziewonski (1975), based on more normal mode data but less body wave data, is also shown.