DOI: 10.1002/2016GL068809
论文题名: Mode switching in volcanic seismicity: El Hierro 2011-2013
作者: Roberts N.S. ; Bell A.F. ; Main I.G.
刊名: Geophysical Research Letters
ISSN: 0094-9063
EISSN: 1944-8794
出版年: 2016
卷: 43, 期: 9 起始页码: 4288
结束页码: 4296
语种: 英语
英文关键词: b value
; El Hierro
; mode switching
; probability
; volcano seismology
Scopus关键词: Probability
; Seismology
; Time switches
; Volcanoes
; B value
; El Hierro
; Mode-switching
; Seismic catalog
; Tectonic seismicity
; Volcanic eruptions
; Volcanic systems
; Volcano seismology
; Probability density function
英文摘要: The Gutenberg-Richter b value is commonly used in volcanic eruption forecasting to infer material or mechanical properties from earthquake distributions. Such studies typically analyze discrete time windows or phases, but the choice of such windows is subjective and can introduce significant bias. Here we minimize this sample bias by iteratively sampling catalogs with randomly chosen windows and then stack the resulting probability density functions for the estimated b value to determine a net probability density function. We examine data from the El Hierro seismic catalog during a period of unrest in 2011-2013 and demonstrate clear multimodal behavior. Individual modes are relatively stable in time, but the most probable b value intermittently switches between modes, one of which is similar to that of tectonic seismicity. Multimodality is primarily associated with intermittent activation and cessation of activity in different parts of the volcanic system rather than with respect to any systematic inferred underlying process. © 2016. The Authors. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84966655462&doi=10.1002%2f2016GL068809&partnerID=40&md5=1f3cb46e0f14f753b30fc2049b1e3463
Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/10026
Appears in Collections: 科学计划与规划 气候变化与战略
There are no files associated with this item.
作者单位: School of Geosciences, University of Edinburgh, Edinburgh, United Kingdom
Recommended Citation:
Roberts N.S.,Bell A.F.,Main I.G.. Mode switching in volcanic seismicity: El Hierro 2011-2013[J]. Geophysical Research Letters,2016-01-01,43(9).