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Seismic Noise H/V Spectral Ratio Can Be Inverted Jointly with Receiver Functions
Izvestiya, Physics of the Solid Earth ( IF 1 ) Pub Date : 2021-08-25 , DOI: 10.1134/s1069351321040017
I. M. Aleshin 1 , G. L. Kosarev 1 , D. A. Presnov 1 , A. G. Goev 2
Affiliation  

The possibility of jointly inverting the receiver function waveforms and the seismic noise horizontal-to-vertical spectral ratio to study the Earth’s structure is substantiated. Both data types are widely used for constructing a velocity model beneath a single seismic station. The main difference between the methods is associated with the different frequency content of input data which is 0.02–0.2 Hz in receiver functions and 0.5–20 Hz in seismic noise. It is shown that notwithstanding these differences, the joint inversion approach more effectively reconstructs the model of the medium in case when a station is underlain by a complexly structured sedimentary cover. In the practical implementation, the parameters of both seismic methods are described in a flat-layer representation of the medium. Besides, both methods are most sensitive to the depth distribution of S-wave velocities. In this work, we use records from the Monakovo seismic station, Nizhny Novgorod region, Russia, to construct a model of the medium consistent with both data types. It is shown that the allowance for the H/V spectral curve in the receiver function interpretation provides additional constraints on the small-scale structure of the upper part of the velocity section thus stabilizing the reconstruction procedure.



中文翻译:

地震噪声 H/V 频谱比可以与接收器功能联合反演

证实了联合反演接收函数波形和地震噪声水平垂直谱比以研究地球结构的可能性。这两种数据类型都广泛用于构建单个地震台站下的速度模型。方法之间的主要区别与输入数据的不同频率内容有关,接收器函数为 0.02–0.2 Hz,地震噪声为 0.5–20 Hz。结果表明,尽管存在这些差异,但联合反演方法可以更有效地重建介质模型,以防台站下伏结构复杂的沉积盖层。在实际实施中,两种地震方法的参数都在介质的平层表示中描述。除了,S波速度。在这项工作中,我们使用来自俄罗斯下诺夫哥罗德地区 Monakovo 地震台的记录来构建与两种数据类型一致的介质模型。结果表明,接收函数解释中H / V谱曲线的容限为速度部分上部的小尺度结构提供了额外的约束,从而稳定了重建过程。

更新日期:2021-08-26
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