DOI: 10.1002/2013GL057664
论文题名: Rapid earthquake rupture duration estimates from teleseismic energy rates, with application to real-time warning
作者: Convers J.A. ; Newman A.V.
刊名: Geophysical Research Letters
ISSN: 0094-8371
EISSN: 1944-8102
出版年: 2013
卷: 40, 期: 22 起始页码: 5844
结束页码: 5848
语种: 英语
英文关键词: earthquake duration
; earthquake energy
; real-time seismology
Scopus关键词: Broad-band seismometers
; Directivity effect
; Earthquake rupture
; High frequency HF
; Moment magnitudes
; Real-time observation
; Real-time seismology
; Rupture velocities
; Wave energy conversion
; Earthquakes
; earthquake rupture
; P-wave
; real time
; seismic moment
; seismograph
; seismology
; tsunami
英文摘要: We estimate the seismic rupture durations from global large earthquakes (moment magnitude ≥ 7.0) by characterizing changes in the radiated P-wave energy and by introducing the time-averaged cumulative energy rate (TACER), which approximates rupture duration based on the peak first local maximum of an earthquake's high-frequency energy measured at teleseismic broadband seismometers. TACER is particularly useful for real-time evaluations, including the identification of slow-rupturing tsunami earthquakes. In cases of long unilateral earthquake rupture and good azimuthal station distribution, the per-station behavior of TACER may identify the approximate rupture direction, rupture velocity, and length due to directivity effects. We retrospectively analyze 93 earthquakes between 2000 and 2009, and analyze another 65 earthquakes using real-time observations between January 2009 and December 2012. Real-time and retrospective results are comparable and similar to the duration expected from other studies where duration grows as the cubed-root of seismic moment. ©2013. American Geophysical Union. All Rights Reserved. URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-84887879563&doi=10.1002%2f2013GL057664&partnerID=40&md5=070f2698e4297a0b90fd17a2ea0b92da
Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/5635
Appears in Collections: 气候减缓与适应
There are no files associated with this item.
作者单位: School of Earth and Atmospheric Sciences, Georgia Institute of Technology, 311 Ferst Drive, Atlanta, GA 30332, United States
Recommended Citation:
Convers J.A.,Newman A.V.. Rapid earthquake rupture duration estimates from teleseismic energy rates, with application to real-time warning[J]. Geophysical Research Letters,2013-01-01,40(22).