DOI: 10.1002/2015GL065023
论文题名: Evidence of Wadati-Benioff zone triggering following the M w 7.9 Little Sitkin, Alaska intermediate depth earthquake of 23 June 2014
作者: Macpherson K.A. ; Ruppert N.A.
刊名: Geophysical Research Letters
ISSN: 0094-8626
EISSN: 1944-8357
出版年: 2015
卷: 42, 期: 15 起始页码: 6269
结束页码: 6277
语种: 英语
英文关键词: aftershocks
; intermediate-depth earthquake
; triggering
Scopus关键词: Geophysics
; Aftershock sequence
; Aftershocks
; Centroid moment tensors
; Double differences
; Intermediate depths
; Intermediate-depth earthquakes
; Triggering
; Wadati-Benioff Zones
; Earthquakes
; aftershock
; earthquake event
; earthquake hypocenter
; earthquake rupture
; earthquake trigger
; numerical model
; seismicity
; slab
; Alaska
; Aleutian Islands
; Rat Island
; United States
; Rattus
英文摘要: The 23 June 2014 Mw=7.9 earthquake that struck the Rat Islands region of Alaska was a rare intermediate-depth event followed by a vigorous aftershock sequence. The earthquake's location within a regional network has allowed us to study it in rich detail. Double-difference relocations of aftershocks and static stress modeling reveal some intriguing features; most aftershocks are not located on the main shock rupture plane, but are concentrated in the adjacent Wadati-Benioff zone in areas of increased stress. Further, a secondary plane of seismicity aligns well with a moderately dipping nodal plane reported by the Global Centroid Moment Tensor Project, and the separation of these locations and the main shock hypocenter from the slab indicates that the main shock ruptured into the oceanic mantle. ©2015. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84940451525&doi=10.1002%2f2015GL065023&partnerID=40&md5=f45b7e7023007647b53e44f539a0ad6d
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/8242
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: Alaska Earthquake Center, University of Alaska Fairbanks, Fairbanks, AK, United States
Recommended Citation:
Macpherson K.A.,Ruppert N.A.. Evidence of Wadati-Benioff zone triggering following the M w 7.9 Little Sitkin, Alaska intermediate depth earthquake of 23 June 2014[J]. Geophysical Research Letters,2015-01-01,42(15).