Direct estimation of near-surface damping based on normalized energy density
Direct estimation of near-surface damping based on normalized energy density
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DOI：
10.1093/gji/ggt104
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发表时间：
2013-07
影响因子：
2.8
通讯作者：
H. Goto;Y. Kawamura;S. Sawada;Takashi Akazawa
中科院分区：
文献类型：
--
作者：
H. Goto;Y. Kawamura;S. Sawada;Takashi Akazawa
我们提出了一个直接估计的阻尼在表面层的归一化能量密度（NED）的基础上。NED之比（定义为最上层的NED除以基底的NED）与总阻尼t S相关性良好。我们应用NED比和总阻尼之间的关系来估计实际场地（日本片木原（KTG）场地）的总阻尼。KTG场地的总阻尼直接估算为t S = 0。038.该值与从常规方法确定的估计值一致，结合非线性反演方案。
We propose a direct estimation of dampings in surface layers based on the normalized energy density (NED). The ratio of the NED, defined as the NED for the uppermost layer divided by the NED for the basement, correlates well with the total damping, t ∗ S . We apply the relation between the NED ratio and the total damping to estimate the total damping at an actual site, Katagihara (KTG) site in Japan. The total damping at the KTG site is directly estimated as t ∗ S = 0 . 038. This value agrees well with the estimated values determined from a conventional method, incorporating the non-linear inversion scheme.