DOI: 10.1007/s11069-019-03833-8
论文题名: Contribution to knowledge regarding the sources of earthquakes on the island of Ischia (Southern Italy)
作者: Cubellis E. ; Luongo G. ; Obrizzo F. ; Sepe V. ; Tammaro U.
刊名: Natural Hazards
ISSN: 0921030X
出版年: 2020
卷: 100, 期: 3 起始页码: 955
结束页码: 994
语种: 英语
中文关键词: Coseismic and historical ground deformations
; Gravitational and thermal loading
; Rheology of shallow crust
英文关键词: coseismic process
; deformation mechanism
; earthquake event
; gravity field
; knowledge
; paleoseismicity
; rheology
; seismic source
; Campania [Italy]
; Ischia
; Italy
; Mediterranean Sea
; Mount Epomeo
; Napoli [Campania]
; Tyrrhenian Sea
英文摘要: This paper analyses data regarding the seismicity and ground deformations of the island of Ischia. The goal is to describe these phenomena as a space–time process, exploring the mechanism as a whole in order to answer questions concerning why and how historical earthquakes occurred and the geological constrains at the time of the earthquake of 21 August 2017. According to our analysis, the genesis of earthquakes in the island may be due either to regional tensile tectonics or to increased pressure in a shallow magma source. The eruptive rest following the 1302 Arso lava flow, the seismic silence from 1883 and the ground sinking recorded at least from the end of the nineteenth century suggest a decline of pressure in the shallow magma source and in the action of the stress field generated by the spreading of the Tyrrhenian Basin. The mechanism that can generate the observed ground deformation field and seismicity is the gravitational and thermal loading of the island, because the load of the massif of Mt. Epomeo onto its hot substratum may induce the gravitational spreading that would have produced its sliding southwards and its rotation northwards. The surface of detachment plunges towards the south and emerges at a high angle at the northern edge of Mt. Epomeo, where coseismic ground effects and the greatest damage have been observed. This mechanism that generated the 21 August 2017 earthquake could be extended to historical seismicity. © 2020, Springer Nature B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/168438
Appears in Collections: 气候变化与战略
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作者单位: Istituto Nazionale di Geofisica e Vulcanologia, Osservatorio Vesuviano, Naples, Italy; Emeritus, University of Naples “Federico II”, Naples, Italy; Istituto Nazionale di Geofisica e Vulcanologia, Osservatorio Nazionale Terremoti, Rome, Italy
Recommended Citation:
Cubellis E.,Luongo G.,Obrizzo F.,et al. Contribution to knowledge regarding the sources of earthquakes on the island of Ischia (Southern Italy)[J]. Natural Hazards,2020-01-01,100(3)