Enhancing the Frequency-Bessel Spectrogram of Ambient Noise Cross-Correlation Functions

Zhang, Gongheng1; Liu, Qi2; Chen, Xiaofei1,3

2023-02-01

10.1785/0120220124

BULLETIN OF THE SEISMOLOGICAL SOCIETY OF AMERICA   Impact Factor & Quartile

0037-1106

1943-3573

The frequency-Bessel (F-J) spectrogram has been used for the extraction of multimodal dispersion curves to constrain the fine crustal shear-wave velocity structure. The original F-J spectrogram was contaminated with curved as well as straight crossed artifacts, which hindered obtaining the dispersion curves, while introducing a considerable error in the inversion result. Curved crossed artifacts in the multicomponent F-J spectrogram are typ-ically removed using the modified F-J transform formulas; to remove straight crossed arti-facts, we used the so-called k -filtering method. Based on a synthetic test and field data from the central Asian orogenic belt, we show that our proposed methods can enhance the multicomponent F-J spectrograms by efficiently removing the two types of crossed artifacts, while identifying more higher modes dispersion curves, and the accuracy of pick-ing can also be improved.

SCI

English

First ; Corresponding

National Natural Science Foundation of China["U1901602","41790465"] ; Guangdong Provincial Key Laboratory of Geophysical High -resolution Imaging Technology[2022B1212010002] ; Shenzhen Science and Technology Program[KQTD20170810111725321] ; leading talents of Guangdong province program[2016LJ06N652]

Geochemistry & Geophysics

Geochemistry & Geophysics

WOS:000928818400005

SEISMOLOGICAL SOC AMER

GEOSCIENCES

Web of Science

1.Southern Univ Sci & Technol, Dept Earth & Space Sci, Shenzhen, Peoples R China
2.Univ Sci & Technol China, Sch Earth & Space Sci, Hefei, Peoples R China
3.Southern Univ Sci & Technol, Guangdong Prov Key Lab Geophys High resolut Imagin, Shenzhen, Peoples R China

Zhang, Gongheng,Liu, Qi,Chen, Xiaofei. Enhancing the Frequency-Bessel Spectrogram of Ambient Noise Cross-Correlation Functions[J]. BULLETIN OF THE SEISMOLOGICAL SOCIETY OF AMERICA,2023,113(1).

Zhang, Gongheng,Liu, Qi,&Chen, Xiaofei.(2023).Enhancing the Frequency-Bessel Spectrogram of Ambient Noise Cross-Correlation Functions.BULLETIN OF THE SEISMOLOGICAL SOCIETY OF AMERICA,113(1).

Zhang, Gongheng,et al."Enhancing the Frequency-Bessel Spectrogram of Ambient Noise Cross-Correlation Functions".BULLETIN OF THE SEISMOLOGICAL SOCIETY OF AMERICA 113.1(2023).