| DOI: | 10.1002/2013GL059083
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| 论文题名: | Vertical ground displacement at Campi Flegrei (Italy) in the fifth century: Rapid subsidence driven by pore pressure drop |
| 作者: | Todesco M.; Costa A.; Comastri A.; Colleoni F.; Spada G.; Quareni F.
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| 刊名: | Geophysical Research Letters
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| ISSN: | 0094-10308
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| EISSN: | 1944-10039
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| 出版年: | 2014
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| 卷: | 41, 期:5 | | 起始页码: | 1471
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| 结束页码: | 1478
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| 语种: | 英语
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| 英文关键词: | caldera
; Campi Flegrei
; deformation
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| Scopus关键词: | Compaction
; Flexible couplings
; Hazards
; Porous materials
; Pressure drop
; Sea level
; Subsidence
; caldera
; Campi Flegrei
; Geological history
; Ground deformations
; Ground displacement
; Hydrothermal system
; Integrated approach
; Radiometric dating
; Deformation
; caldera
; compaction
; decompression
; deformation
; displacement
; historical record
; history of geology
; hydrothermal system
; integrated approach
; pore pressure
; pressure drop
; radiometric method
; Roman era
; sea level change
; subsidence
; tectonic evolution
; uplift
; volcanic eruption
; Campania [Italy]
; Campi Flegrei
; Italy
; Napoli [Campania]
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| 英文摘要: | Campi Flegrei (Italy) caldera has experienced episodes of ground deformation throughout its geological history, alternating between uplift and subsidence phases. Although uplift periods are typically more alarming, here we focus on subsidence, looking for its driving mechanisms and its role in the caldera evolution. Historical and archaeological records constrain ground deformation over the last two millennia. Here we revise such records and combine them with published radiometric dating and with the simulation of sea level change. The resulting analysis highlights for the first time a rapid subsidence during the fifth century. We show that rate and magnitude of this subsidence are consistent with the compaction of porous material caused by a pressure drop of ~ 1 MPa within the hydrothermal system. We interpret this event as the decompression of the hydrothermal system following an unrecognized episode of unrest, during Roman times. These findings redefine the pattern of ground deformation and bear important implications for volcanic hazard assessment. Key Points An integrated approach constrains fast subsidence at Campi Flegrei in the fifth century Fast subsidence can be caused by compaction due to decompression of hydrothermal system A sequence of unrest events preceded last eruption with no secular subsidence ©2014. American Geophysical Union. All Rights Reserved. |
| URL: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-84895110355&doi=10.1002%2f2013GL059083&partnerID=40&md5=8104ebd9470ba3a4b81489de435c681b
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| Citation statistics: |
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| 资源类型: | 期刊论文
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| 标识符: | http://119.78.100.158/handle/2HF3EXSE/7572
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| Appears in Collections: | 气候减缓与适应
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作者单位: | Istituto Nazionale di Geofisica e Vulcanologia, Sezione di Bologna, Bologna, Italy
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| Recommended Citation: | |
Todesco M.,Costa A.,Comastri A.,et al. Vertical ground displacement at Campi Flegrei (Italy) in the fifth century: Rapid subsidence driven by pore pressure drop[J]. Geophysical Research Letters,2014-01-01,41(5).
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