A new fifth parameter for transverse isotropy II: partial derivatives

A new fifth parameter for transverse isotropy II: partial derivatives
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横向各向同性 II 的新第五个参数:偏导数

DOI:
10.1093/gji/ggw152
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发表时间:
2016
期刊:
Geophys. Jour. Inter.
影响因子:
--
通讯作者:
H.
H.
中科院分区:
--
文献类型:
--
作者:
Kawakatsu;H.

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Kawakatsuet等人引入了新的第五个参数ηκ来描述横向各向同性(TI)。考虑到ηκ表征了TI模型体波相速度的入射角依赖性,其与体波地震学的相关性是明显的。在这里,我们导出了新的5个参数集的表面波相速度和正态特征频率的偏导数(灵敏度核)表达式。η - κ的偏导数约为常规η的两倍,表明η - κ更容易被分解。虽然速度的偏导数没有变化,但速度的偏导数有了显著的变化;对各向异性速度的灵敏度大大降低。与Dziewonski & Anderson和Anderson & Dziewonski的建议相反,对各向异性速度没有太多的控制。另一方面,ηκ对长周期地震学的意义也逐渐明确。
Kawakatsuet al.and Kawakatsu introduced a new fifth parameter, ηκ, to describe transverse isotropy (TI). Considering that ηκcharacterizes the incidence angle dependence of body wave phase velocities for TI models, its relevance for body wave seismology is obvious. Here, we derive expressions for partial derivatives (sensitivity kernels) of surface wave phase velocity and normal mode eigenfrequency for the new set of five parameters. The partial derivative for ηκis about twice as large as that for the conventional η, indicating that ηκshould be more readily resolved. While partial derivatives forSvelocities are not so changed, those forPvelocities are significantly modified; the sensitivity for anisotropicPvelocities is greatly reduced. In contrary to the suggestion by Dziewonski & Anderson and Anderson & Dziewonski, there is not much control on the anisotropicPvelocities. On the other hand, the significance of ηκfor long-period seismology has become clear.
全球地震学中的弱弹性各向异性
DOI: 10.1130/2015.2514(04
发表时间: 2014
影响因子: 5.3
作者:
L. Thomsen;D. L. Anderson
通讯作者: D. L. Anderson
横向各向同性的新第五参数
DOI: 10.1093/gji/ggv479
发表时间: 2016
影响因子: 2.8
作者:
Kawakatsu;H.
通讯作者: H.