Shallow Magmatic System of Arxan Volcano Revealed by Ambient Noise Tomography with Dense Array
The Arxan Volcanic Field (AVF) is an active volcanic region in Northeast Asia, and its last eruption occurred approximately 2000 years ago. Its eruption mechanism remains unknown. To investigate the shallow magma system beneath the volcanic cones in the AVF, we deployed a dense seismic array consist...
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MDPI AG
2024-11-01
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| author | Lijuan Qu You Tian Cai Liu Hongli Li |
| author_facet | Lijuan Qu You Tian Cai Liu Hongli Li |
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| description | The Arxan Volcanic Field (AVF) is an active volcanic region in Northeast Asia, and its last eruption occurred approximately 2000 years ago. Its eruption mechanism remains unknown. To investigate the shallow magma system beneath the volcanic cones in the AVF, we deployed a dense seismic array consisting of 227 portable seismographs and conducted high-resolution ambient noise tomography (ANT). The results of checkerboard test (CRT) and restoring resolution test (RRT) demonstrate that our imaging results are reliable. These results reveale significant slow-velocity anomalies at depths of 5~9 km below the Tianchi caldera and GD1213 volcano in Arxan, with the highest anomaly reaching up to approximately 15%. These anomalies suggest partial melting in a shallow magma chamber, indicating ongoing volcanic activity in the AVF. The velocity of the magma chamber corresponding to a melt fraction of approximately 7.4~12.9%. Therefore, the presence of the magma chamber poses potential hazards to the Arxan region, including volcanic eruptions and their associated risks. |
| format | Article |
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| issn | 2076-3417 |
| language | English |
| publishDate | 2024-11-01 |
| publisher | MDPI AG |
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| series | Applied Sciences |
| spelling | doaj-art-a2d2c778a86c44958c24f3fbb124479e2025-08-20T02:26:54ZengMDPI AGApplied Sciences2076-34172024-11-0114221059610.3390/app142210596Shallow Magmatic System of Arxan Volcano Revealed by Ambient Noise Tomography with Dense ArrayLijuan Qu0You Tian1Cai Liu2Hongli Li3College of Geoexploration Science and Technology, Jilin University, Changchun 130026, ChinaCollege of Geoexploration Science and Technology, Jilin University, Changchun 130026, ChinaCollege of Geoexploration Science and Technology, Jilin University, Changchun 130026, ChinaCollege of Geoexploration Science and Technology, Jilin University, Changchun 130026, ChinaThe Arxan Volcanic Field (AVF) is an active volcanic region in Northeast Asia, and its last eruption occurred approximately 2000 years ago. Its eruption mechanism remains unknown. To investigate the shallow magma system beneath the volcanic cones in the AVF, we deployed a dense seismic array consisting of 227 portable seismographs and conducted high-resolution ambient noise tomography (ANT). The results of checkerboard test (CRT) and restoring resolution test (RRT) demonstrate that our imaging results are reliable. These results reveale significant slow-velocity anomalies at depths of 5~9 km below the Tianchi caldera and GD1213 volcano in Arxan, with the highest anomaly reaching up to approximately 15%. These anomalies suggest partial melting in a shallow magma chamber, indicating ongoing volcanic activity in the AVF. The velocity of the magma chamber corresponding to a melt fraction of approximately 7.4~12.9%. Therefore, the presence of the magma chamber poses potential hazards to the Arxan region, including volcanic eruptions and their associated risks.https://www.mdpi.com/2076-3417/14/22/10596dense seismic arraymagmatic systemmagma chamberupper crustS-velocity modelactive volcanoes |
| spellingShingle | Lijuan Qu You Tian Cai Liu Hongli Li Shallow Magmatic System of Arxan Volcano Revealed by Ambient Noise Tomography with Dense Array Applied Sciences dense seismic array magmatic system magma chamber upper crust S-velocity model active volcanoes |
| title | Shallow Magmatic System of Arxan Volcano Revealed by Ambient Noise Tomography with Dense Array |
| title_full | Shallow Magmatic System of Arxan Volcano Revealed by Ambient Noise Tomography with Dense Array |
| title_fullStr | Shallow Magmatic System of Arxan Volcano Revealed by Ambient Noise Tomography with Dense Array |
| title_full_unstemmed | Shallow Magmatic System of Arxan Volcano Revealed by Ambient Noise Tomography with Dense Array |
| title_short | Shallow Magmatic System of Arxan Volcano Revealed by Ambient Noise Tomography with Dense Array |
| title_sort | shallow magmatic system of arxan volcano revealed by ambient noise tomography with dense array |
| topic | dense seismic array magmatic system magma chamber upper crust S-velocity model active volcanoes |
| url | https://www.mdpi.com/2076-3417/14/22/10596 |
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