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DOI: 10.1002/2016GL069737
论文题名:
Role of mechanical erosion in controlling the effusion rate of basaltic eruptions
作者: Piombo A.; Tallarico A.; Dragoni M.
刊名: Geophysical Research Letters
ISSN: 0094-8695
EISSN: 1944-8426
出版年: 2016
卷: 43, 期:17
起始页码: 8970
结束页码: 8977
语种: 英语
英文关键词: basaltic eruption ; lava flow rate ; volcanology
Scopus关键词: Erosion ; Basaltic eruptions ; Effusion rates ; Elliptical cross section ; Eruption duration ; Lava flows ; Magma reservoirs ; Mechanical erosion ; volcanology ; Basalt
英文摘要: In many basaltic eruptions, observations show that the effusion rate of magma has a typical dependence on time: the effusion rate curves show first a period of increasing and later a decreasing phase by a maximum value. We present a model to explain this behavior by the emptying of a magma reservoir through a vertical cylindrical conduit with elliptical cross section, coupled with the its widening due to mechanical erosion, produced by the magma flow. The model can reproduce the observed dependence on time of effusion rate in basaltic eruptions. Eruption duration and the maximum value of effusion rate depend on the size of magma chamber, on lava viscosity and strongly on erosion rate per unit traction. ©2016. American Geophysical Union. All Rights Reserved.
URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84988980867&doi=10.1002%2f2016GL069737&partnerID=40&md5=678610ac62ed4468c39f3a5ad6ca0c44
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/9658
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: Dipartimento di Fisica e Astronomia, Alma Mater Studiorum–Università di Bologna, Bologna, Italy

Recommended Citation:
Piombo A.,Tallarico A.,Dragoni M.. Role of mechanical erosion in controlling the effusion rate of basaltic eruptions[J]. Geophysical Research Letters,2016-01-01,43(17).
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