Statistical Regularity and Relation Between Small Earthquakes and Crustal Velocity Structure Beneath Bohai Sea and Its Surrounding Areas in China

Zhu Xinran; Xue Peng; Wang Wei; Ni Yingying; Pang Guanghua

doi:doi:10.11648/j.earth.20211006.13

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Statistical Regularity and Relation Between Small Earthquakes and Crustal Velocity Structure Beneath Bohai Sea and Its Surrounding Areas in China

Zhu Xinran, Xue Peng, Wang Wei, Ni Yingying, Pang Guanghua

Published in Earth Sciences (Volume 10, Issue 6)

Received: 4 October 2021 Accepted: 8 November 2021 Published: 12 November 2021

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Abstract

The Bohai Sea is a seismically active region in China, and the studying of the velocity structure of Bohai Sea and its relationship with earthquake may be helpful to the analysis and prediction of earthquakes. Now, ambient noise tomography is an effective tool to obtain crust and upmost mantle structure. In this paper, the S-wave velocity model of the crust beneath the Bohai Sea and its surrouding areas in China was constructed applying ambient noise tomography method, with steps of calculating cross correlations of all possible vertical-component data recorded in 2013 year, retrieving Empirical Green’s Functions (EGFs) for Rayleigh wave, measuring and assessing phase velocity-dispersion curves, creating the phase-velocity maps for the 8-35 s period of the Rayleigh wave, constructing the phase velocity maps and inverting the S-wave velocity structure. We work on the statistics and analysis of the characteristic relationship between crustal S-wave velocity and the temporal and spatial distribution of small earthquakes. The results from all available vertical profiles along different directions reveal that small earthquakes usually occur at the edge of the low-velocity anomaly within the shallow crust in a certain velocity range and, under special conditions, even in a distinct velocity contour. The locations of occurrence are closely related to undulating changes of the corresponding Moho morphology and the locally high Vs anomalies within the middle crust.

Published in	Earth Sciences (Volume 10, Issue 6)
DOI	10.11648/j.earth.20211006.13
Page(s)	275-280
Creative Commons	This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium or format, provided the original work is properly cited.
Copyright	Copyright © The Author(s), 2021. Published by Science Publishing Group

Keywords

Crust Structure, Small Earthquakes, Regularity, Relation, Bohai Sea

References

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APA Style

Zhu Xinran, Xue Peng, Wang Wei, Ni Yingying, Pang Guanghua. (2021). Statistical Regularity and Relation Between Small Earthquakes and Crustal Velocity Structure Beneath Bohai Sea and Its Surrounding Areas in China. Earth Sciences, 10(6), 275-280. https://doi.org/10.11648/j.earth.20211006.13

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ACS Style

Zhu Xinran; Xue Peng; Wang Wei; Ni Yingying; Pang Guanghua. Statistical Regularity and Relation Between Small Earthquakes and Crustal Velocity Structure Beneath Bohai Sea and Its Surrounding Areas in China. Earth Sci. 2021, 10(6), 275-280. doi: 10.11648/j.earth.20211006.13

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AMA Style

Zhu Xinran, Xue Peng, Wang Wei, Ni Yingying, Pang Guanghua. Statistical Regularity and Relation Between Small Earthquakes and Crustal Velocity Structure Beneath Bohai Sea and Its Surrounding Areas in China. Earth Sci. 2021;10(6):275-280. doi: 10.11648/j.earth.20211006.13

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@article{10.11648/j.earth.20211006.13,
  author = {Zhu Xinran and Xue Peng and Wang Wei and Ni Yingying and Pang Guanghua},
  title = {Statistical Regularity and Relation Between Small Earthquakes and Crustal Velocity Structure Beneath Bohai Sea and Its Surrounding Areas in China},
  journal = {Earth Sciences},
  volume = {10},
  number = {6},
  pages = {275-280},
  doi = {10.11648/j.earth.20211006.13},
  url = {https://doi.org/10.11648/j.earth.20211006.13},
  eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.earth.20211006.13},
  abstract = {The Bohai Sea is a seismically active region in China, and the studying of the velocity structure of Bohai Sea and its relationship with earthquake may be helpful to the analysis and prediction of earthquakes. Now, ambient noise tomography is an effective tool to obtain crust and upmost mantle structure. In this paper, the S-wave velocity model of the crust beneath the Bohai Sea and its surrouding areas in China was constructed applying ambient noise tomography method, with steps of calculating cross correlations of all possible vertical-component data recorded in 2013 year, retrieving Empirical Green’s Functions (EGFs) for Rayleigh wave, measuring and assessing phase velocity-dispersion curves, creating the phase-velocity maps for the 8-35 s period of the Rayleigh wave, constructing the phase velocity maps and inverting the S-wave velocity structure. We work on the statistics and analysis of the characteristic relationship between crustal S-wave velocity and the temporal and spatial distribution of small earthquakes. The results from all available vertical profiles along different directions reveal that small earthquakes usually occur at the edge of the low-velocity anomaly within the shallow crust in a certain velocity range and, under special conditions, even in a distinct velocity contour. The locations of occurrence are closely related to undulating changes of the corresponding Moho morphology and the locally high Vs anomalies within the middle crust.},
 year = {2021}
}

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TY  - JOUR
T1  - Statistical Regularity and Relation Between Small Earthquakes and Crustal Velocity Structure Beneath Bohai Sea and Its Surrounding Areas in China
AU  - Zhu Xinran
AU  - Xue Peng
AU  - Wang Wei
AU  - Ni Yingying
AU  - Pang Guanghua
Y1  - 2021/11/12
PY  - 2021
N1  - https://doi.org/10.11648/j.earth.20211006.13
DO  - 10.11648/j.earth.20211006.13
T2  - Earth Sciences
JF  - Earth Sciences
JO  - Earth Sciences
SP  - 275
EP  - 280
PB  - Science Publishing Group
SN  - 2328-5982
UR  - https://doi.org/10.11648/j.earth.20211006.13
AB  - The Bohai Sea is a seismically active region in China, and the studying of the velocity structure of Bohai Sea and its relationship with earthquake may be helpful to the analysis and prediction of earthquakes. Now, ambient noise tomography is an effective tool to obtain crust and upmost mantle structure. In this paper, the S-wave velocity model of the crust beneath the Bohai Sea and its surrouding areas in China was constructed applying ambient noise tomography method, with steps of calculating cross correlations of all possible vertical-component data recorded in 2013 year, retrieving Empirical Green’s Functions (EGFs) for Rayleigh wave, measuring and assessing phase velocity-dispersion curves, creating the phase-velocity maps for the 8-35 s period of the Rayleigh wave, constructing the phase velocity maps and inverting the S-wave velocity structure. We work on the statistics and analysis of the characteristic relationship between crustal S-wave velocity and the temporal and spatial distribution of small earthquakes. The results from all available vertical profiles along different directions reveal that small earthquakes usually occur at the edge of the low-velocity anomaly within the shallow crust in a certain velocity range and, under special conditions, even in a distinct velocity contour. The locations of occurrence are closely related to undulating changes of the corresponding Moho morphology and the locally high Vs anomalies within the middle crust.
VL  - 10
IS  - 6
ER  -

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Author Information

Zhu Xinran

College of Electrical and Electronic Engineering, Changchun University of Technology, Changchun, China
Xue Peng

College of Electrical and Electronic Engineering, Changchun University of Technology, Changchun, China
Wang Wei

College of Electrical and Electronic Engineering, Changchun University of Technology, Changchun, China
Ni Yingying

College of Electrical and Electronic Engineering, Changchun University of Technology, Changchun, China
Pang Guanghua

College of Electrical and Electronic Engineering, Changchun University of Technology, Changchun, China

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APA Style

Zhu Xinran, Xue Peng, Wang Wei, Ni Yingying, Pang Guanghua. (2021). Statistical Regularity and Relation Between Small Earthquakes and Crustal Velocity Structure Beneath Bohai Sea and Its Surrounding Areas in China. Earth Sciences, 10(6), 275-280. https://doi.org/10.11648/j.earth.20211006.13

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ACS Style

Zhu Xinran; Xue Peng; Wang Wei; Ni Yingying; Pang Guanghua. Statistical Regularity and Relation Between Small Earthquakes and Crustal Velocity Structure Beneath Bohai Sea and Its Surrounding Areas in China. Earth Sci. 2021, 10(6), 275-280. doi: 10.11648/j.earth.20211006.13

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AMA Style

Zhu Xinran, Xue Peng, Wang Wei, Ni Yingying, Pang Guanghua. Statistical Regularity and Relation Between Small Earthquakes and Crustal Velocity Structure Beneath Bohai Sea and Its Surrounding Areas in China. Earth Sci. 2021;10(6):275-280. doi: 10.11648/j.earth.20211006.13

Copy | Download

@article{10.11648/j.earth.20211006.13,
  author = {Zhu Xinran and Xue Peng and Wang Wei and Ni Yingying and Pang Guanghua},
  title = {Statistical Regularity and Relation Between Small Earthquakes and Crustal Velocity Structure Beneath Bohai Sea and Its Surrounding Areas in China},
  journal = {Earth Sciences},
  volume = {10},
  number = {6},
  pages = {275-280},
  doi = {10.11648/j.earth.20211006.13},
  url = {https://doi.org/10.11648/j.earth.20211006.13},
  eprint = {https://article.sciencepublishinggroup.com/pdf/10.11648.j.earth.20211006.13},
  abstract = {The Bohai Sea is a seismically active region in China, and the studying of the velocity structure of Bohai Sea and its relationship with earthquake may be helpful to the analysis and prediction of earthquakes. Now, ambient noise tomography is an effective tool to obtain crust and upmost mantle structure. In this paper, the S-wave velocity model of the crust beneath the Bohai Sea and its surrouding areas in China was constructed applying ambient noise tomography method, with steps of calculating cross correlations of all possible vertical-component data recorded in 2013 year, retrieving Empirical Green’s Functions (EGFs) for Rayleigh wave, measuring and assessing phase velocity-dispersion curves, creating the phase-velocity maps for the 8-35 s period of the Rayleigh wave, constructing the phase velocity maps and inverting the S-wave velocity structure. We work on the statistics and analysis of the characteristic relationship between crustal S-wave velocity and the temporal and spatial distribution of small earthquakes. The results from all available vertical profiles along different directions reveal that small earthquakes usually occur at the edge of the low-velocity anomaly within the shallow crust in a certain velocity range and, under special conditions, even in a distinct velocity contour. The locations of occurrence are closely related to undulating changes of the corresponding Moho morphology and the locally high Vs anomalies within the middle crust.},
 year = {2021}
}

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TY  - JOUR
T1  - Statistical Regularity and Relation Between Small Earthquakes and Crustal Velocity Structure Beneath Bohai Sea and Its Surrounding Areas in China
AU  - Zhu Xinran
AU  - Xue Peng
AU  - Wang Wei
AU  - Ni Yingying
AU  - Pang Guanghua
Y1  - 2021/11/12
PY  - 2021
N1  - https://doi.org/10.11648/j.earth.20211006.13
DO  - 10.11648/j.earth.20211006.13
T2  - Earth Sciences
JF  - Earth Sciences
JO  - Earth Sciences
SP  - 275
EP  - 280
PB  - Science Publishing Group
SN  - 2328-5982
UR  - https://doi.org/10.11648/j.earth.20211006.13
AB  - The Bohai Sea is a seismically active region in China, and the studying of the velocity structure of Bohai Sea and its relationship with earthquake may be helpful to the analysis and prediction of earthquakes. Now, ambient noise tomography is an effective tool to obtain crust and upmost mantle structure. In this paper, the S-wave velocity model of the crust beneath the Bohai Sea and its surrouding areas in China was constructed applying ambient noise tomography method, with steps of calculating cross correlations of all possible vertical-component data recorded in 2013 year, retrieving Empirical Green’s Functions (EGFs) for Rayleigh wave, measuring and assessing phase velocity-dispersion curves, creating the phase-velocity maps for the 8-35 s period of the Rayleigh wave, constructing the phase velocity maps and inverting the S-wave velocity structure. We work on the statistics and analysis of the characteristic relationship between crustal S-wave velocity and the temporal and spatial distribution of small earthquakes. The results from all available vertical profiles along different directions reveal that small earthquakes usually occur at the edge of the low-velocity anomaly within the shallow crust in a certain velocity range and, under special conditions, even in a distinct velocity contour. The locations of occurrence are closely related to undulating changes of the corresponding Moho morphology and the locally high Vs anomalies within the middle crust.
VL  - 10
IS  - 6
ER  -

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