Sensor Misorientation of CHINArray-II in Northeastern Tibetan Plateau from P- and Rayleigh-Wave Polarization Analysis

Wu，Shanshan1,2,3; Guo，Zhen1,3; Luo，Bin1; Qin，Lei4; Wu，Chenglong5,6; Wei，Zigen7; Ren，Pengfei1; Yu，Haiying2,3

2024-05-01

10.1785/0220230328

Seismological Research Letters   影响因子和分区

0895-0695

1938-2057

Accurate sensor orientation is important in providing reliable data used for seismological analysis such as P-wave receiver function analysis, shear-wave splitting, and ambient noise analysis. In this study, we used three distinct P-wave and Rayleigh-wave polarization analysis methods to estimate actual sensor orientation of 660 stations from CHINArray-II in northeastern margin of Tibetan plateau. We found that ∼ 42.12%–45.76% of the stations are well oriented with the absolute misorientation angle < 3°, 42.42%–45.45% of the stations are fairly oriented with the absolute misorientation angle ranging from 3° to 10°, and 8.94%–11.82% of the stations are oriented with the absolute misorientation angle > 10°. We further compared the results of some seismological analyses before and after sensor misorientation correction, such as Rayleigh-wave ellipticity (horizontal-to-vertical ratio) and P-wave receiver functions analysis. We found that when the sensor misorientation angle is large, it may lead to incorrect seismological results. With the same sensor misorientation, its influence on different seismological analysis is also different.

SCI ; EI

英语

第一 ; 通讯

GEOSCIENCES

2-s2.0-85191991478

Scopus

1.Department of Ocean Science and Engineering,Southern University of Science and Technology,Shenzhen,China
2.Shanghai Earthquake Administration,Shanghai,China
3.Shanghai Sheshan National Geophysical Observatory and Research Station,Shanghai,China
4.International Business Center,Sinopec Geophysical Corporation,Beijing,China
5.Key Laboratory of Mineral Resources,Institute of Geology and Geophysics,Chinese Academy of Sciences,Beijing,China
6.Innovation Academy for Earth Science,Chinese Academy of Sciences,Beijing,China
7.State Key Laboratory of Geodesy and Earth’s Dynamics,Innovation Academy for Precision Measurement Science and Technology,Chinese Academy of Sciences,Wuhan,China

Wu，Shanshan,Guo，Zhen,Luo，Bin,et al. Sensor Misorientation of CHINArray-II in Northeastern Tibetan Plateau from P- and Rayleigh-Wave Polarization Analysis[J]. Seismological Research Letters,2024,95(3):1663-1674.

Wu，Shanshan.,Guo，Zhen.,Luo，Bin.,Qin，Lei.,Wu，Chenglong.,...&Yu，Haiying.(2024).Sensor Misorientation of CHINArray-II in Northeastern Tibetan Plateau from P- and Rayleigh-Wave Polarization Analysis.Seismological Research Letters,95(3),1663-1674.

Wu，Shanshan,et al."Sensor Misorientation of CHINArray-II in Northeastern Tibetan Plateau from P- and Rayleigh-Wave Polarization Analysis".Seismological Research Letters 95.3(2024):1663-1674.