DOI: 10.1002/2014GL061153
论文题名: The 23 June 2014 M<inf>w</inf> 7.9 Rat Islands archipelago, Alaska, intermediate depth earthquake
作者: Ye L. ; Lay T. ; Kanamori H.
刊名: Geophysical Research Letters
ISSN: 0094-9793
EISSN: 1944-9524
出版年: 2014
卷: 41, 期: 18 起始页码: 6389
结束页码: 6395
语种: 英语
英文关键词: finite-fault model
; intermediate depth
; intraslab deformation
; Mw 7.9
; Rat Islands earthquake
; rupture process
Scopus关键词: Faulting
; Rats
; Seismology
; Aleutian islands
; Finite fault modeling
; Intermediate depths
; Intermediate-depth earthquakes
; Mw 7.9
; Radiated energies
; Rupture process
; Subduction zones
; Earthquakes
; deformation mechanism
; earthquake epicenter
; earthquake rupture
; plate motion
; seismic hazard
; seismic wave
; slab
; subduction zone
; Alaska
; Aleutian Islands
; Aleutian Islands
; Rat Island
; United States
; Rattus
英文摘要: On 23 June 2014, the largest intermediate depth earthquake (Mw 7.9) of the last 100 years ruptured within the subducting Pacific plate about 100 km below the Rat Islands archipelago of the Western Aleutian Islands, Alaska. The unusual faulting orientation, strike = 206°, dip = 24°, and rake = -14°, is possibly related to curvature of the underthrust slab and high obliquity of the relative plate motions. The first ~15 s of the rupture generated relatively weak seismic waves, followed by strong energy release for the next 25 s. The seismic moment is 1.0 × 1021 Nm, and slip of up to ~10 m is concentrated within a 50 km × 50 km region. The radiated energy is 1.1 to 2.7 × 1016 J, assuming attenuation t∗ of 0.4 to 0.7 s. This type of intraplate faulting can be very damaging for populated regions above subduction zones such as Japan, Taiwan, Chile, and Indonesia. Key Points The 2014 Rat Islands Mw 7.9 earthquake ruptured within the Pacific slabIt is the largest intermediate depth earthquake in 100 yearsThis category of event presents poorly recognized seismic hazard for some zones ©2014. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84911127011&doi=10.1002%2f2014GL061153&partnerID=40&md5=d85580b2d32194fe9c0a94af94a2eed7
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/7057
Appears in Collections: 气候减缓与适应
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作者单位: Department of Earth and Planetary Sciences, University of California, Santa Cruz, CA, United States
Recommended Citation:
Ye L.,Lay T.,Kanamori H.. The 23 June 2014 M<inf>w</inf> 7.9 Rat Islands archipelago, Alaska, intermediate depth earthquake[J]. Geophysical Research Letters,2014-01-01,41(18).