DOI: 10.1002/2014GL059824
论文题名: Decrypting geophysical signals at Stromboli Volcano (Italy): Integration of seismic and ground-based InSAR displacement data
作者: Di Traglia F. ; Cauchie L. ; Casagli N. ; Saccorotti G.
刊名: Geophysical Research Letters
ISSN: 0094-10148
EISSN: 1944-9879
出版年: 2014
卷: 41, 期: 8 起始页码: 2753
结束页码: 2761
语种: 英语
英文关键词: GBInSAR monitoring
; Strombolian explosions
; very long period activity
; volcanic tremor
Scopus关键词: Deformation
; Gases
; Integration
; Radar systems
; Seismology
; Synthetic aperture radar
; Volcanoes
; Conduit systems
; Cumulative amplitude
; Ground deformations
; Interferometric synthetic aperture radars
; Seismic tremor
; Stromboli volcano
; Volatile contents
; Volcanic tremor
; Data integration
; data interpretation
; deformation
; degassing
; explosion
; gas flow
; geophysical method
; magma
; seismic data
; slug flow
; synthetic aperture radar
; volcanology
; Italy
; Lipari Islands
; Messina [Sicily]
; Sicily
; Stromboli
英文摘要: We present the integration of seismic and Ground-Based Interferometric Synthetic Aperture Radar system (GBInSAR) displacement data at Stromboli Volcano. Ground deformation in the area of summit vents is positively correlated with both seismic tremor amplitude and cumulative amplitudes of very long period (VLP) signals associated with Strombolian explosions. Changes in VLP amplitudes precede by a few days the variations in ground deformation and seismic tremor. We propose a model where the arrival of fresh, gas-rich magma from depth enhances gas slug formation, promoting convection and gas transfer throughout the conduit system. At the shallowest portion of the conduit, an increase in volatile content causes a density decrease, expansion of the magmatic column and augmented degassing activity, which respectively induce inflation of the conduit, and increased tremor amplitudes. The temporal delay between increase of VLP and tremor amplitudes/conduit inflation can be interpreted in terms of the different timescales characterizing bulk gas transfer versus slug formation and ascent. Key Points Integration of seismic and Ground-Based InSAR displacement data at Stromboli Correlation between inflation, volcanic tremor, and rate of VLP events Passive gas transfer in the conduit is delayed with respect to slug formation ©2014. The Authors. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84899043038&doi=10.1002%2f2014GL059824&partnerID=40&md5=ac1da2f9d030e8aaf6b1cc82c6867e09
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/7412
Appears in Collections: 气候减缓与适应
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作者单位: Department of Earth Sciences, Università Degli Studi di Firenze, Firenze, Italy
Recommended Citation:
Di Traglia F.,Cauchie L.,Casagli N.,et al. Decrypting geophysical signals at Stromboli Volcano (Italy): Integration of seismic and ground-based InSAR displacement data[J]. Geophysical Research Letters,2014-01-01,41(8).