DOI: 10.1002/2015GL065638
论文题名: How the differential load induced by normal fault scarps controls the distribution of monogenic volcanism
作者: Maccaferri F. ; Acocella V. ; Rivalta E.
刊名: Geophysical Research Letters
ISSN: 0094-9575
EISSN: 1944-9306
出版年: 2015
卷: 42, 期: 18 起始页码: 7507
结束页码: 7512
语种: 英语
英文关键词: dyke propagation
; fault scarp
; monogenic volcanism
; unloading
Scopus关键词: Faulting
; Hazards
; Unloading
; Volcanoes
; East African Rift
; Fault scarp
; Magma transfers
; Mass redistribution
; monogenic volcanism
; Plate boundaries
; Topographic scarps
; Volcanic hazards
; Fault slips
; dike
; fault scarp
; hazard assessment
; numerical model
; rift zone
; topography
; volcanism
; Afar
; Iceland
英文摘要: Understanding shallow magma transfer and the related vent distribution is crucial for volcanic hazard. Here we investigate how the stress induced by topographic scarps linked to normal faults affects the distribution of monogenic volcanoes at divergent plate boundaries. Our numerical models of dyke propagation below a fault scarp show that the dykes tend to propagate toward and erupt on the footwall side. This effect, increasing with the scarp height, is stronger for dykes propagating underneath the hanging wall side and decreases with the distance from the scarp. A comparison to the East African Rift System, Afar and Iceland shows that (1) the inner rift structure, which shapes the topography, controls shallow dyke propagation; (2) differential loading due to mass redistribution affects magma propagation over a broad scale range (100-105-m). Our results find application to any volcanic field with tectonics- or erosion-induced topographic variations and should be considered in any volcanic hazard assessment. © 2015 American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84945236937&doi=10.1002%2f2015GL065638&partnerID=40&md5=992414250bcf088c129ab961719cb3b4
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/9190
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: Helmholtz-Zentrum Potsdam Deutsches GeoForschungsZentrum GFZ, Potsdam, Germany
Recommended Citation:
Maccaferri F.,Acocella V.,Rivalta E.. How the differential load induced by normal fault scarps controls the distribution of monogenic volcanism[J]. Geophysical Research Letters,2015-01-01,42(18).