DOI: 10.1002/2016GL070409
论文题名: Low stress drop earthquakes in the rupture zone of the 1992 Nicaragua tsunami earthquake
作者: Bilek S.L. ; Rotman H.M.M. ; Phillips W.S.
刊名: Geophysical Research Letters
ISSN: 0094-8534
EISSN: 1944-8265
出版年: 2016
卷: 43, 期: 19 起始页码: 10180
结束页码: 10188
语种: 英语
英文关键词: Nicaragua
; stress drop
; tsunami earthquake
Scopus关键词: Drops
; Geophysics
; Seismology
; Tsunamis
; Coastal population
; Earthquake rupture
; Earthquake source
; High frequency HF
; Nicaragua
; Seismic radiation
; Spatial variations
; Stress drop
; Earthquakes
英文摘要: Tsunami earthquakes, events that generate larger than expected tsunami and are deficient in high-frequency seismic radiation, are rare but hazardous to coastal populations. One model for these events is shallow rupture through low-strength materials. We calculate seismic moment, corner frequency, and stress drop for 216 earthquakes (2.1 < Mw < 4.7, November 2005 to June 2006) within and external to the 1992 Nicaragua tsunami earthquake rupture zone to test the hypothesis that differences in fault zone properties defined the limits of the 1992 tsunami rupture zone and continue to produce spatial variations in earthquake source properties. Mean stress drop of events within the rupture area is 1.2 MPa, and 5.5 MPa for events just outside of the rupture zone, with similar magnitude earthquakes in each group. Our results demonstrate different source parameter characteristics for microseismicity in the region of a past tsunami earthquake. ©2016. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84991058746&doi=10.1002%2f2016GL070409&partnerID=40&md5=0495171d1d189c4373301937495d8d0d
Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/9497
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: Earth and Environmental Science Department, New Mexico Tech, Socorro, NM, United States
Recommended Citation:
Bilek S.L.,Rotman H.M.M.,Phillips W.S.. Low stress drop earthquakes in the rupture zone of the 1992 Nicaragua tsunami earthquake[J]. Geophysical Research Letters,2016-01-01,43(19).