Cooperative P-Wave Velocity Measurement with Full Waveform Moment Tensor Inversion in Transversely Anisotropic Media
Precise stochastic approaches to quantitatively calculate the source uncertainties offers the opportunity to eliminate the influence of anisotropy on moment tensor inversion. The effects of ignoring anisotropy were tested by using homogeneous Green’s functions. Results indicate the influence of anis...
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2022-03-01
|
| Series: | Sensors |
| Subjects: | |
| Online Access: | https://www.mdpi.com/1424-8220/22/5/1935 |
| _version_ | 1797473708033441792 |
|---|---|
| author | Ju Ma Shuang Wu Yuan Zhao Guoyan Zhao |
| author_facet | Ju Ma Shuang Wu Yuan Zhao Guoyan Zhao |
| author_sort | Ju Ma |
| collection | DOAJ |
| description | Precise stochastic approaches to quantitatively calculate the source uncertainties offers the opportunity to eliminate the influence of anisotropy on moment tensor inversion. The effects of ignoring anisotropy were tested by using homogeneous Green’s functions. Results indicate the influence of anisotropy and noise on fault plane rotation is very small for a pure shear source whether it is restricted to double couple solution or full moment tensor solution. Green’s functions with different prior rough anisotropy information were tested, indicating that the complex source is more sensitive to velocity models than the pure shear source and the fault plane rotation caused by full moment tensor solution is larger than the pure double couple solution. Collaborative P-wave velocity inversion with active measurements and passive acoustic emission data using the fast-marching method were conducted, and new Green’s functions established based on the tomography results. The resolved fault plane solution rotated only 3.5° when using the new Green’s functions, but the presence of spurious isotropic and compensated linear vector dipole components was not completely eliminated. It is concluded that the cooperative inversion is capable of greatly improving the accuracy of the fault plane solutions and reducing the spurious components in the full moment tensor solution. |
| first_indexed | 2024-03-09T20:21:14Z |
| format | Article |
| id | doaj.art-48c831daa3d145808c3586ac844999bb |
| institution | Directory Open Access Journal |
| issn | 1424-8220 |
| language | English |
| last_indexed | 2024-03-09T20:21:14Z |
| publishDate | 2022-03-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Sensors |
| spelling | doaj.art-48c831daa3d145808c3586ac844999bb2023-11-23T23:48:36ZengMDPI AGSensors1424-82202022-03-01225193510.3390/s22051935Cooperative P-Wave Velocity Measurement with Full Waveform Moment Tensor Inversion in Transversely Anisotropic MediaJu Ma0Shuang Wu1Yuan Zhao2Guoyan Zhao3School of Resources and Safety Engineering, Central South University, Changsha 410083, ChinaSchool of Resources and Safety Engineering, Central South University, Changsha 410083, ChinaSchool of Resources and Safety Engineering, Central South University, Changsha 410083, ChinaSchool of Resources and Safety Engineering, Central South University, Changsha 410083, ChinaPrecise stochastic approaches to quantitatively calculate the source uncertainties offers the opportunity to eliminate the influence of anisotropy on moment tensor inversion. The effects of ignoring anisotropy were tested by using homogeneous Green’s functions. Results indicate the influence of anisotropy and noise on fault plane rotation is very small for a pure shear source whether it is restricted to double couple solution or full moment tensor solution. Green’s functions with different prior rough anisotropy information were tested, indicating that the complex source is more sensitive to velocity models than the pure shear source and the fault plane rotation caused by full moment tensor solution is larger than the pure double couple solution. Collaborative P-wave velocity inversion with active measurements and passive acoustic emission data using the fast-marching method were conducted, and new Green’s functions established based on the tomography results. The resolved fault plane solution rotated only 3.5° when using the new Green’s functions, but the presence of spurious isotropic and compensated linear vector dipole components was not completely eliminated. It is concluded that the cooperative inversion is capable of greatly improving the accuracy of the fault plane solutions and reducing the spurious components in the full moment tensor solution.https://www.mdpi.com/1424-8220/22/5/1935moment tensor inversiontomographyfull waveformtransversely anisotropic |
| spellingShingle | Ju Ma Shuang Wu Yuan Zhao Guoyan Zhao Cooperative P-Wave Velocity Measurement with Full Waveform Moment Tensor Inversion in Transversely Anisotropic Media Sensors moment tensor inversion tomography full waveform transversely anisotropic |
| title | Cooperative P-Wave Velocity Measurement with Full Waveform Moment Tensor Inversion in Transversely Anisotropic Media |
| title_full | Cooperative P-Wave Velocity Measurement with Full Waveform Moment Tensor Inversion in Transversely Anisotropic Media |
| title_fullStr | Cooperative P-Wave Velocity Measurement with Full Waveform Moment Tensor Inversion in Transversely Anisotropic Media |
| title_full_unstemmed | Cooperative P-Wave Velocity Measurement with Full Waveform Moment Tensor Inversion in Transversely Anisotropic Media |
| title_short | Cooperative P-Wave Velocity Measurement with Full Waveform Moment Tensor Inversion in Transversely Anisotropic Media |
| title_sort | cooperative p wave velocity measurement with full waveform moment tensor inversion in transversely anisotropic media |
| topic | moment tensor inversion tomography full waveform transversely anisotropic |
| url | https://www.mdpi.com/1424-8220/22/5/1935 |
| work_keys_str_mv | AT juma cooperativepwavevelocitymeasurementwithfullwaveformmomenttensorinversionintransverselyanisotropicmedia AT shuangwu cooperativepwavevelocitymeasurementwithfullwaveformmomenttensorinversionintransverselyanisotropicmedia AT yuanzhao cooperativepwavevelocitymeasurementwithfullwaveformmomenttensorinversionintransverselyanisotropicmedia AT guoyanzhao cooperativepwavevelocitymeasurementwithfullwaveformmomenttensorinversionintransverselyanisotropicmedia |