Composition of the Mantle and Core
Composition of the Mantle and Core
复制标题
地幔和地核的组成
DOI:
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发表时间:
1977
期刊:
影响因子:
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通讯作者:
D. L. Anderson
中科院分区:
文献类型:
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作者:
D. L. Anderson
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.