DOI: 10.1002/2016GL068895
论文题名: Shallow magma chamber under the Wudalianchi Volcanic Field unveiled by seismic imaging with dense array
作者: Li Z. ; Ni S. ; Zhang B. ; Bao F. ; Zhang S. ; Deng Y. ; Yuen D.A.
刊名: Geophysical Research Letters
ISSN: 0094-9596
EISSN: 1944-9327
出版年: 2016
卷: 43, 期: 10 起始页码: 4954
结束页码: 4961
语种: 英语
英文关键词: ambient noise tomography
; dense seismic array
; magma chamber
; shear wave velocity
; Wudalianchi Volcano Field
Scopus关键词: Acoustic noise
; Seismology
; Shear flow
; Shear waves
; Tomography
; Wave propagation
; Ambient noise tomographies
; Magma chamber
; Seismic arrays
; Shear wave velocity
; Wudalianchi Volcano Field
; Volcanoes
; acoustic array
; acoustic tomography
; ambient noise
; electrical conductivity
; imaging method
; magma chamber
; partial melting
; S-wave
; seismic method
; seismic noise
; volcanic eruption
; wave velocity
; China
; Heilongjiang
; Wudalianchi
英文摘要: 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. ©2016. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84971201950&doi=10.1002%2f2016GL068895&partnerID=40&md5=dcced02dd6af75eb9b0abee506c9f114
Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/10559
Appears in Collections: 科学计划与规划 气候变化与战略
There are no files associated with this item.
作者单位: State Key Laboratory of Geodesy and Earth's Dynamics, Institute of Geodesy and Geophysics, Chinese Academy of Sciences, Wuhan, China
Recommended Citation:
Li Z.,Ni S.,Zhang B.,et al. Shallow magma chamber under the Wudalianchi Volcanic Field unveiled by seismic imaging with dense array[J]. Geophysical Research Letters,2016-01-01,43(10).