Varying Shear Wave Splitting Parameters Suggest Interaction Between Lithosphere and Asthenosphere in Arxan‐Chaihe Volcanic Field, NE China
Abstract Over 2 years of broadband seismic data from 27 temporary stations deployed in the Arxan‐Chaihe Volcanic Field (ACVF) provides us a valued opportunity to study mantle deformation and related geodynamic processes in NE China intraplate region. We estimated 153 pairs of high‐quality teleseismi...
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| Format: | Article |
| Language: | English |
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Wiley
2022-07-01
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| Series: | Geophysical Research Letters |
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| Online Access: | https://doi.org/10.1029/2022GL099129 |
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| author | Zhengyang Qiang Qingju Wu Yonghua Li Fengxue Zhang |
| author_facet | Zhengyang Qiang Qingju Wu Yonghua Li Fengxue Zhang |
| author_sort | Zhengyang Qiang |
| collection | DOAJ |
| description | Abstract Over 2 years of broadband seismic data from 27 temporary stations deployed in the Arxan‐Chaihe Volcanic Field (ACVF) provides us a valued opportunity to study mantle deformation and related geodynamic processes in NE China intraplate region. We estimated 153 pairs of high‐quality teleseismic shear wave splitting parameters at 22 stations and 98 non‐splitting measurements at 19 stations. Most of the stations in ACVF are characterized by NNW–SSE trending fast directions with variable splitting delay times, suggesting the fossilized extensional deformation within the lithosphere is locally thermal erased by the hot mantle upwellings associated with the volcanism. In the region south of the 46.5°N, a sharp swing of fast polarization occurs, and both nearly NW‐SE and W‐E oriented fast directions are observed, which could be explained by small local mantle convection caused by the lithospheric delamination. |
| format | Article |
| id | doaj-art-db6d5ab8b3514cfab8e0acae15f8a575 |
| institution | OA Journals |
| issn | 0094-8276 1944-8007 |
| language | English |
| publishDate | 2022-07-01 |
| publisher | Wiley |
| record_format | Article |
| series | Geophysical Research Letters |
| spelling | doaj-art-db6d5ab8b3514cfab8e0acae15f8a5752025-08-20T02:17:21ZengWileyGeophysical Research Letters0094-82761944-80072022-07-014914n/an/a10.1029/2022GL099129Varying Shear Wave Splitting Parameters Suggest Interaction Between Lithosphere and Asthenosphere in Arxan‐Chaihe Volcanic Field, NE ChinaZhengyang Qiang0Qingju Wu1Yonghua Li2Fengxue Zhang3Institute of Geophysics Chinese Earthquake Administration Beijing ChinaInstitute of Geophysics Chinese Earthquake Administration Beijing ChinaInstitute of Geophysics Chinese Earthquake Administration Beijing ChinaInstitute of Geophysics Chinese Earthquake Administration Beijing ChinaAbstract Over 2 years of broadband seismic data from 27 temporary stations deployed in the Arxan‐Chaihe Volcanic Field (ACVF) provides us a valued opportunity to study mantle deformation and related geodynamic processes in NE China intraplate region. We estimated 153 pairs of high‐quality teleseismic shear wave splitting parameters at 22 stations and 98 non‐splitting measurements at 19 stations. Most of the stations in ACVF are characterized by NNW–SSE trending fast directions with variable splitting delay times, suggesting the fossilized extensional deformation within the lithosphere is locally thermal erased by the hot mantle upwellings associated with the volcanism. In the region south of the 46.5°N, a sharp swing of fast polarization occurs, and both nearly NW‐SE and W‐E oriented fast directions are observed, which could be explained by small local mantle convection caused by the lithospheric delamination.https://doi.org/10.1029/2022GL099129northeast Chinashear wave splittingupper mantle anisotropyfossilized lithosphere deformationmantle thermal erosionlocal mantle convection |
| spellingShingle | Zhengyang Qiang Qingju Wu Yonghua Li Fengxue Zhang Varying Shear Wave Splitting Parameters Suggest Interaction Between Lithosphere and Asthenosphere in Arxan‐Chaihe Volcanic Field, NE China Geophysical Research Letters northeast China shear wave splitting upper mantle anisotropy fossilized lithosphere deformation mantle thermal erosion local mantle convection |
| title | Varying Shear Wave Splitting Parameters Suggest Interaction Between Lithosphere and Asthenosphere in Arxan‐Chaihe Volcanic Field, NE China |
| title_full | Varying Shear Wave Splitting Parameters Suggest Interaction Between Lithosphere and Asthenosphere in Arxan‐Chaihe Volcanic Field, NE China |
| title_fullStr | Varying Shear Wave Splitting Parameters Suggest Interaction Between Lithosphere and Asthenosphere in Arxan‐Chaihe Volcanic Field, NE China |
| title_full_unstemmed | Varying Shear Wave Splitting Parameters Suggest Interaction Between Lithosphere and Asthenosphere in Arxan‐Chaihe Volcanic Field, NE China |
| title_short | Varying Shear Wave Splitting Parameters Suggest Interaction Between Lithosphere and Asthenosphere in Arxan‐Chaihe Volcanic Field, NE China |
| title_sort | varying shear wave splitting parameters suggest interaction between lithosphere and asthenosphere in arxan chaihe volcanic field ne china |
| topic | northeast China shear wave splitting upper mantle anisotropy fossilized lithosphere deformation mantle thermal erosion local mantle convection |
| url | https://doi.org/10.1029/2022GL099129 |
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