DOI: 10.1002/2015GL064848
论文题名: Automated detection and location of microseismicity at Mount St. Helens with a large-N geophone array
作者: Hansen S.M. ; Schmandt B.
刊名: Geophysical Research Letters
ISSN: 0094-9345
EISSN: 1944-9076
出版年: 2015
卷: 42, 期: 18 起始页码: 7390
结束页码: 7397
语种: 英语
英文关键词: earthquake detection
; Mount St. Helens
Scopus关键词: Geophysics
; Seismic waves
; Seismology
; Active volcanoes
; Automated detection
; Earthquake detection
; Earthquake location
; Fracture network
; Mount St. Helens
; Pacific Northwest
; Seismic observation
; Earthquakes
; automation
; earthquake intensity
; fracture network
; geophone
; seismic design
; volcano
; Cascade Range
; Mount Saint Helens
; Pacific Northwest
; United States
; Washington [United States]
英文摘要: In the summer of 2014 a dense array of 904 geophones was deployed at Mount St. Helens along the road and trail system within 15-km distance of the summit crater. The array recorded continuous data for approximately 2-weeks and presents an unprecedented seismic observation of an active volcano. A reverse-time imaging method is applied to short-term-average over long-term-average time series data to automatically detect and locate microseismicity. These efforts resulted in an order of magnitude increase in earthquake detections over the normal monitoring operations of the Pacific Northwest Seismic Network. Earthquake locations resolve a narrow, ≤1-km wide, vertical lineament of seismicity which extends from the surface to 4-km depth directly beneath the summit crater. This feature is interpreted as a fracture network that acts as a conduit connecting an underlying magma chamber to the surface. © 2015 American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84945477693&doi=10.1002%2f2015GL064848&partnerID=40&md5=ef7e35acee1e8dc0c57ac1ef7e8d28c3
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/8960
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: Department of Earth and Planetary Sciences, University of New Mexico, Albuquerque, NM, United States
Recommended Citation:
Hansen S.M.,Schmandt B.. Automated detection and location of microseismicity at Mount St. Helens with a large-N geophone array[J]. Geophysical Research Letters,2015-01-01,42(18).