Scaled Energy Estimation for Shallow Slow Earthquakes
Scaled Energy Estimation for Shallow Slow Earthquakes
复制标题
浅层慢地震的按比例能量估算
DOI：
10.1029/2018jb016815
复制
发表时间：
2019
期刊：
影响因子：
--
通讯作者：
Nakano Masaru
中科院分区：
文献类型：
--
作者：
Yabe Suguru;Tonegawa Takashi;Nakano Masaru
南海俯冲带孕震带边缘有深、浅源慢震。深部慢地震发生在高温高压条件下，而浅层慢地震发生在较低的温度和压力下。虽然这两种类型的慢地震在性质上表现出相似的行为，例如缓慢的变形和高频地震信号的衰减，但它们的相似性尚未得到定量的评估。在这项工作中，我们分析了浅层构造震颤伴随着非常低频地震的纪伊半岛，日本。我们通过校正海底地震台站的场地放大和浅加积棱镜中的地震衰减来估计浅构造地震的地震能量。将这些构造地震的估计地震能量率与伴随的甚低频地震的地震矩率进行比较，发现浅源慢地震的标度能量大致恒定，约为10− 9 ~ 10−8，比深源慢地震的典型标度能量大0 ~ 1个数量级。
Deep and shallow slow earthquakes occur at the edge of the seismogenic zone in the Nankai subduction zone. Deep slow earthquakes occur under high‐temperature and high‐pressure conditions, whereas shallow slow earthquakes occur at lower temperatures and pressures. Although these two types of slow earthquake show qualitatively similar behaviors, such as slow deformation and depleted high‐frequency seismic signals, their similarities have not yet been evaluated in quantitative ways. In this work, we analyze shallow tectonic tremors accompanied by very low frequency earthquakes off Kii Peninsula, Japan. We estimate the seismic energy of the shallow tectonic tremors by correcting for the site amplifications of ocean bottom seismic stations and seismic attenuation in the shallow accretionary prism. The estimated seismic energy rates of these tectonic tremors are compared with seismic moment rates of accompanying very low frequency earthquakes, revealing that the scaled energy of shallow slow earthquakes is roughly constant, ~10−9to 10−8, which is 0 to 1 order of magnitude larger than the typical scaled energy of deep slow earthquakes.
登录
查看更多内容
影响因子：
3.9
作者：
Frank, William B.;Shapiro, Nikolai M.;Campillo, Michel
通讯作者：
Campillo, Michel
影响因子：
3
作者：
Asano, Youichi;Obara, Kazushige;Ito, Yoshihiro
通讯作者：
Ito, Yoshihiro
俯冲带构造震动地震能量率空间分布
影响因子：
--
作者：
K. Sadakane;Y. Horikawa;M. Nagao;and H. Seto;S. Yabe and S. Ide
通讯作者：
S. Yabe and S. Ide
影响因子：
--
作者：
M. Nakano;T. Hori;E. Araki;N. Takahashi;S. Kodaira
通讯作者：
S. Kodaira
日本三重县东南部南海海槽轴线附近发生浅层阵发性震颤
影响因子：
5.2
作者：
S. Annoura;T. Hashimoto;Noriko Kamaya;A. Katsumata
通讯作者：
A. Katsumata