Shallow magma chamber under the Wudalianchi Volcanic Field unveiled by seismic imaging with dense array
Abstract The Wudalianchi Volcano Field (WDF) is a typical intraplate volcano in northeast China with generation mechanism not yet well understood. As its last eruption was around 300 years ago, the present risk for volcano eruption is of particular public interest. We have carried out a high‐resolut...
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| Format: | Article |
| Language: | English |
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Wiley
2016-05-01
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| Series: | Geophysical Research Letters |
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| Online Access: | https://doi.org/10.1002/2016GL068895 |
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| author | Zhiwei Li Sidao Ni Baolong Zhang Feng Bao Senqi Zhang Yang Deng David A. Yuen |
| author_facet | Zhiwei Li Sidao Ni Baolong Zhang Feng Bao Senqi Zhang Yang Deng David A. Yuen |
| author_sort | Zhiwei Li |
| collection | DOAJ |
| description | Abstract The Wudalianchi Volcano Field (WDF) is a typical intraplate volcano in northeast China with generation mechanism not yet well understood. As its last eruption was around 300 years ago, the present risk for volcano eruption is of particular public interest. We have carried out a high‐resolution ambient noise tomography to investigate the location of magma chambers beneath the volcanic cones with a dense seismic array of 43 seismometers and ~ 6 km spatial interval. Significant low‐velocity anomalies up to 10% are found at 7–13 km depth under the Weishan volcano, consistent with the pronounced high electrical‐conductivity anomalies from previous magnetotelluric survey. We propose these extremely low velocity anomalies can be interpreted as partial melting in a shallow magma chamber with volume at least 200 km3 which may be responsible for most of the recent volcanic eruptions in WDF. Therefore, this magma chamber may pose a serious hazard for northeast China. |
| format | Article |
| id | doaj-art-ecaae8aadffe4d47a4339e5b040a0e3e |
| institution | DOAJ |
| issn | 0094-8276 1944-8007 |
| language | English |
| publishDate | 2016-05-01 |
| publisher | Wiley |
| record_format | Article |
| series | Geophysical Research Letters |
| spelling | doaj-art-ecaae8aadffe4d47a4339e5b040a0e3e2025-08-20T03:10:24ZengWileyGeophysical Research Letters0094-82761944-80072016-05-0143104954496110.1002/2016GL068895Shallow magma chamber under the Wudalianchi Volcanic Field unveiled by seismic imaging with dense arrayZhiwei Li0Sidao Ni1Baolong Zhang2Feng Bao3Senqi Zhang4Yang Deng5David A. Yuen6State Key Laboratory of Geodesy and Earth's Dynamics Institute of Geodesy and Geophysics, Chinese Academy of Sciences Wuhan ChinaState Key Laboratory of Geodesy and Earth's Dynamics Institute of Geodesy and Geophysics, Chinese Academy of Sciences Wuhan ChinaState Key Laboratory of Geodesy and Earth's Dynamics Institute of Geodesy and Geophysics, Chinese Academy of Sciences Wuhan ChinaState Key Laboratory of Geodesy and Earth's Dynamics Institute of Geodesy and Geophysics, Chinese Academy of Sciences Wuhan ChinaCenter for hydrogeology and environmental geology survey China Geological Survey Baoding ChinaEarthquake Administration of Heilongjiang Province Harbin ChinaSchool of Environment Sciences China University of Geosciences Wuhan ChinaAbstract The Wudalianchi Volcano Field (WDF) is a typical intraplate volcano in northeast China with generation mechanism not yet well understood. As its last eruption was around 300 years ago, the present risk for volcano eruption is of particular public interest. We have carried out a high‐resolution ambient noise tomography to investigate the location of magma chambers beneath the volcanic cones with a dense seismic array of 43 seismometers and ~ 6 km spatial interval. Significant low‐velocity anomalies up to 10% are found at 7–13 km depth under the Weishan volcano, consistent with the pronounced high electrical‐conductivity anomalies from previous magnetotelluric survey. We propose these extremely low velocity anomalies can be interpreted as partial melting in a shallow magma chamber with volume at least 200 km3 which may be responsible for most of the recent volcanic eruptions in WDF. Therefore, this magma chamber may pose a serious hazard for northeast China.https://doi.org/10.1002/2016GL068895Wudalianchi Volcano Fielddense seismic arrayambient noise tomographyshear wave velocitymagma chamber |
| spellingShingle | Zhiwei Li Sidao Ni Baolong Zhang Feng Bao Senqi Zhang Yang Deng David A. Yuen Shallow magma chamber under the Wudalianchi Volcanic Field unveiled by seismic imaging with dense array Geophysical Research Letters Wudalianchi Volcano Field dense seismic array ambient noise tomography shear wave velocity magma chamber |
| title | Shallow magma chamber under the Wudalianchi Volcanic Field unveiled by seismic imaging with dense array |
| title_full | Shallow magma chamber under the Wudalianchi Volcanic Field unveiled by seismic imaging with dense array |
| title_fullStr | Shallow magma chamber under the Wudalianchi Volcanic Field unveiled by seismic imaging with dense array |
| title_full_unstemmed | Shallow magma chamber under the Wudalianchi Volcanic Field unveiled by seismic imaging with dense array |
| title_short | Shallow magma chamber under the Wudalianchi Volcanic Field unveiled by seismic imaging with dense array |
| title_sort | shallow magma chamber under the wudalianchi volcanic field unveiled by seismic imaging with dense array |
| topic | Wudalianchi Volcano Field dense seismic array ambient noise tomography shear wave velocity magma chamber |
| url | https://doi.org/10.1002/2016GL068895 |
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