Small-scale scattering heterogeneities beneath the northern Tien Shan from the teleseismic P wavefield
Small-scale scattering heterogeneities beneath the northern Tien Shan from the teleseismic P wavefield
复制标题
远震 P 波场显示北天山下方的小尺度散射不均匀性
DOI:
10.1186/s40623-020-1136-1
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发表时间:
2020-02
影响因子:
3
通讯作者:
Huang Zongying
中科院分区:
文献类型:
--
作者:
Ma Xiaolong;Huang Zongying
In order to investigate the small-scale scattering heterogeneities underneath the northern Tien Shan, we analyze the P wavefield from teleseismic events. By using the teleseismic fluctuation method, we separate the total wavefield into coherent and fluctuating parts in the frequency band of 0.1–8.0 Hz. Subsequently, we investigate the scattering characteristics by analyzing the frequency-dependent intensities of the coherent and fluctuating wavefield between 0.3 and 2.5 Hz. We further constrain the velocity perturbations and correlation lengths by modeling the P-wave coda envelope with the Monte Carlo simulation. Strong scattering heterogeneities are revealed beneath the northern Tien Shan. The preferred scattering model can be described as a ~ 55- to 130-km-thick randomly heterogeneous layer with velocity perturbations of 6–9% and correlation lengths on the order of 0.4 km. We attribute these small-scale scatterers to isolated melt pockets from the upwelling hot mantle materials.
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影响因子:
--
作者:
A. Frankel;R. Clayton
通讯作者:
A. Frankel;R. Clayton
影响因子:
2.8
作者:
S. Takemura;Manabu Kobayashi;K. Yoshimoto
通讯作者:
S. Takemura;Manabu Kobayashi;K. Yoshimoto
DOI:
10.1029/2018jb016642
发表时间:
2019-02
期刊:
Journal of Geophysical Research: Solid Earth
影响因子:
--
作者:
Y. Lai;Ling Chen;Tao Wang;Z. Zhan
通讯作者:
Y. Lai;Ling Chen;Tao Wang;Z. Zhan
影响因子:
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通讯作者:
S. Roecker;T. M. Sabitova;L. Vinnik;Y. Burmakov;M. I. Golvanov;R. Mamatkanova;L. Munirova
影响因子:
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作者:
R. Wu;K. Aki
通讯作者:
R. Wu;K. Aki