| DOI: | 10.1002/2013GL058935
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| 论文题名: | Tracking high-frequency seismic source evolution: 2004 Mw 8.1 Macquarie event |
| 作者: | Kennett B.L.N.; Gorbatov A.; Spiliopoulos S.
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| 刊名: | Geophysical Research Letters
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| ISSN: | 0094-10367
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| EISSN: | 1944-10098
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| 出版年: | 2014
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| 卷: | 41, 期:4 | | 起始页码: | 1187
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| 结束页码: | 1193
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| 语种: | 英语
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| 英文关键词: | earthquake sources
; energy projection
; source evolution
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| Scopus关键词: | Geophysics
; Azimuthal distributions
; Earthquake source
; Energy emissions
; Energy projections
; High frequency HF
; High-frequency radiation
; Radiation energy
; source evolution
; Earth sciences
; array
; azimuth
; energy efficiency
; estimation method
; fracture zone
; frequency analysis
; radiation balance
; seismic source
; Macquarie Ridge
; Pacific Ocean
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| 英文摘要: | The 2004 Mw 8.1 event on 23 December 2004 near the Macquarie Ridge is a very large intraplate event that has been overshadowed by the M w 9.3 Sumatra-Andaman event only 3 days later. We are able to track the progress of source evolution by estimating the progression of the points of energy emission, exploiting the good azimuthal distribution of available stations. The results indicate that this event ruptured on two nearby fault systems reactivating fossil fracture zones, with the second subevent to the west triggered by the first. The total duration of high-frequency radiation is quite short, about 60 s, for such a large event. Much of the high-frequency radiation occurs on a fault subparallel to that inferred from long-period studies. This composite fault behavior with displaced triggered failure appears to be a characteristic of large intraplate events beneath the oceans. Key Points M w 8.1 2004 Macquarie event triggers secondary event Separation of high-frequency and low-frequency radiation Energy projection without use of large arrays ©2014 Commonwealth of Australia. |
| URL: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-84894239831&doi=10.1002%2f2013GL058935&partnerID=40&md5=fe60570d91d2be75d3afd5384f471e23
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| 资源类型: | 期刊论文
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| 标识符: | http://119.78.100.158/handle/2HF3EXSE/7631
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| Appears in Collections: | 气候减缓与适应
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作者单位: | Research School of Earth Sciences, Australian National University, Canberra ACT, Australia
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| Recommended Citation: | |
Kennett B.L.N.,Gorbatov A.,Spiliopoulos S.. Tracking high-frequency seismic source evolution: 2004 Mw 8.1 Macquarie event[J]. Geophysical Research Letters,2014-01-01,41(4).
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