DOI: 10.1002/2015GL066852
论文题名: The propagation and seismicity of dyke injection, new experimental evidence
作者: Bakker R.R. ; Fazio M. ; Benson P.M. ; Hess K.-U. ; Dingwell D.B.
刊名: Geophysical Research Letters
ISSN: 0094-9260
EISSN: 1944-8991
出版年: 2016
卷: 43, 期: 5 起始页码: 1876
结束页码: 1883
语种: 英语
英文关键词: basalt
; deformation
; dyke formation
; HPT experiments
; limestone
; volcanic basement
Scopus关键词: Basalt
; Deformation
; Flow of fluids
; Fracture
; Limestone
; Seismology
; Tensile strength
; Volcanoes
; Confining pressures
; Different frequency
; Dominant frequency
; Dyke formation
; Experimental evidence
; Seismic monitoring
; Viscous fluid flow
; Volcanic basement
; Acoustic emission testing
英文摘要: To reach the surface, dykes must overcome the inherent tensile strength of the country rock. As they do, they generate swarms of seismic signals, frequently used for forecasting. In this study we pressurize and inject molten acrylic into an encapsulating host rocks of (1) Etna basalt and (2) Comiso limestone, at 30 MPa of confining pressure. Fracture was achieved at 12 MPa for Etna basalt and 7.2 MPa for Comiso limestone. The generation of radial fractures was accompanied by acoustic emissions (AE) at a dominant frequency of 600 kHz. During "magma" movement in the dykes, AE events of approximately 150 kHz dominant frequency were recorded. We interpret our data using AE location and dominant frequency analysis, concluding that the seismicity associated with magma transport in dykes peaks during initial dyke creation but remains significant as long as magma movement continues. These results have important implications for seismic monitoring of active volcanoes. © 2016. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84959531362&doi=10.1002%2f2015GL066852&partnerID=40&md5=3e26b7884ec44b26f227ecca3f59e88f
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/10223
Appears in Collections: 科学计划与规划 气候变化与战略
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作者单位: Geological Institute, ETH Zürich, Swiss Federal Institute of Technology, Zürich, Switzerland
Recommended Citation:
Bakker R.R.,Fazio M.,Benson P.M.,et al. The propagation and seismicity of dyke injection, new experimental evidence[J]. Geophysical Research Letters,2016-01-01,43(5).