DOI: 10.1016/j.earscirev.2019.01.002
论文题名: Dynamics of Vulcano Island (Tyrrhenian Sea, Italy) investigated by long-term (40 years) geophysical data
作者: Alparone S. ; Bonforte A. ; Gambino S. ; Guglielmino F. ; Obrizzo F. ; Velardita R.
刊名: Earth Science Reviews
ISSN: 00128252
出版年: 2019
卷: 190 起始页码: 521
结束页码: 535
语种: 英语
中文关键词: Earthquakes
; Ground deformation
; Hazard
; Monitoring
; Volcanic unrest
英文关键词: data inversion
; deformation mechanism
; earthquake event
; fumarole
; geophysical survey
; ground motion
; seismic data
; seismic hazard
; volcanic eruption
; Italy
; Lipari Islands
; Messina [Sicily]
; Sicily
; Vulcano
英文摘要: Vulcano Island is a composite volcanic edifice located in the south-central sector of the Aeolian Archipelago (Tyrrhenian Sea, Italy). Historic activity has been characterized by frequent transitions from phreatomagmatic to minor magmatic activity. The last eruption in 1888–90 saw powerful explosive pulses and this eruption defines what we call ‘vulcanian’ also for other volcanoes. Since then, volcanic activity has been in the form of fumarolic emanations of variable intensity and temperature, mainly concentrated at “La Fossa” crater. We investigated Vulcano dynamics through ca. 40 years of ground deformation and seismicity data collected by the discrete and continuous INGV monitoring networks. We considered levelling, GPS, EDM, seismic and tilt data. EDM and levelling measurements began in the middle of the 1970s; since the late 1990s, the EDM benchmarks have been measured using GPS. We performed a data inversion identifying, for the 1999–2013 period, the action of a deflating magmatic source, located under Vulcanello at 4–5 km a.s.l, just at the top of a wide regional tectonic tabular source. We analyzed data on different time-space scales, distinguishing the dynamics of different sectors of Vulcano (Piano, Vulcanello, La Fossa cone and Caldera) and three periods (1974–1984, 1984–1999, 1999–2013) and the time evolution of the dynamics of the island. We also show how the regional tectonic stress plays an important role in the transition of the volcanic system from a phase of stability to one of unrest, inducing the heating and expansion of shallow hydrothermal fluids. © 2019 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/165759
Appears in Collections: 气候变化与战略
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作者单位: Istituto Nazionale di Geofisica e Vulcanologia, Sezione di Catania – Osservatorio Etneo, P.zza Roma 2, Catania, 95123, Italy; Istituto Nazionale di Geofisica e Vulcanologia, Sezione di Napoli - Osservatorio Vesuviano, Via Diocleziano, 328, Napoli, 80124, Italy
Recommended Citation:
Alparone S.,Bonforte A.,Gambino S.,et al. Dynamics of Vulcano Island (Tyrrhenian Sea, Italy) investigated by long-term (40 years) geophysical data[J]. Earth Science Reviews,2019-01-01,190