DOI: 10.1016/j.epsl.2018.06.008
Scopus记录号: 2-s2.0-85049340124
论文题名: A 6000-year-long paleoseismologic record of earthquakes along the Xorkoli section of the Altyn Tagh fault, China
作者: Yuan Z. ; Liu-Zeng J. ; Wang W. ; Weldon R.J. ; II ; Oskin M.E. ; Shao Y. ; Li Z. ; Li Z. ; Wang P. ; Zhang J.
刊名: Earth and Planetary Science Letters
ISSN: 0012821X
出版年: 2018
卷: 497 起始页码: 193
结束页码: 203
语种: 英语
英文关键词: Altyn Tagh fault
; fault section
; paleoearthquake
; recurrence behavior
; strike-slip fault
Scopus关键词: Earthquakes
; Strike-slip faults
; Altyn Tagh fault
; Earthquake recurrence
; Fault sections
; Large surfaces
; Mean recurrence intervals
; Paleoearthquake
; recurrence behavior
; Seismic hazards
; Fault slips
; earthquake recurrence
; historical record
; paleoseismicity
; recurrence interval
; seismic data
; seismic hazard
; strike-slip fault
; Altyn Tagh Fault Zone
; China
英文摘要: Long records of paleoearthquakes are essential for understanding earthquake recurrence behavior of active faults and for evaluating regional seismic hazard. However, paleoseismic data on the Altyn Tagh fault (ATF), one of the longest strike-slip fault in Asia, are scarce. We document a long paleoseismic record along the Xorkoli section of the central ATF. Eight and probably nine earthquakes are identified based on event evidence in the form of open fissures, folds, unconformities, and upward fault terminations, with modeled mean (95% confidence) ages of A.D. 1598 (1491–1741) yr (event A), A.D. 797 (676–926) yr (B), B.C. 668 (732–589) yr (C), B.C. 956 (1206–715) yr (D), B.C. 1301 (1369–1235) yr (E), B.C. 2105 (2233–1987) yr (F, probable), B.C. 2663 (2731–2601) yr (G), B.C. 2818 (2878–2742) yr (H), B.C. 3396 (3522–3205) yr (I). The mean recurrence interval is 620 ± 410 yr with a coefficient of variation (COV) of 0.67, indicating that earthquake recurrence is weakly periodic, with individual intervals ranging from as short as 150 yr to as long as 1460 yr. A global compilation of 35 strike-slip paleoseismic sites yields a similar average COV of 0.69. Synthesis of paleoseismic sites from the central ATF indicates that not all earthquakes ruptured to the eastern end of the Xorkoli section, within the Aksay restraining bend. Given that the 420-yr elapsed time since the most recent event, well within a COV of mean interval, a large surface-rupturing earthquake could occur at any time along the central ATF. © 2018 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/109767
Appears in Collections: 影响、适应和脆弱性 气候变化事实与影响
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作者单位: State Key Laboratory of Earthquake Dynamics, Institute of Geology, China Earthquake Administration, Beijing, China; China Earthquake Disaster Prevention Center, Beijing, China; Department of Earth Sciences, University of Oregon, Eugene, OR, United States; Department of Earth and Planetary Sciences, University of California, Davis, CA, United States; School of Earth Sciences and Engineering, Sun Yat-Sen University, Guangzhou, China
Recommended Citation:
Yuan Z.,Liu-Zeng J.,Wang W.,et al. A 6000-year-long paleoseismologic record of earthquakes along the Xorkoli section of the Altyn Tagh fault, China[J]. Earth and Planetary Science Letters,2018-01-01,497