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DOI | 10.1002/2017GL074455 |
Decadal Modulation of Repeating Slow Slip Event Activity in the Southwestern Ryukyu Arc Possibly Driven by Rifting Episodes at the Okinawa Trough | |
Tu, Yoko; Heki, Kosuke | |
2017-09-28 | |
发表期刊 | GEOPHYSICAL RESEARCH LETTERS |
ISSN | 0094-8276 |
EISSN | 1944-8007 |
出版年 | 2017 |
卷号 | 44期号:18 |
文章类型 | Article |
语种 | 英语 |
国家 | Japan |
英文摘要 | We studied 38 slow slip events (SSEs) in 1997-2016 beneath the Iriomote Island, southwestern Ryukyu Arc, Japan, using continuous Global Navigation Satellite Systems data. These SSEs occur biannually on the same fault patch at a depth of similar to 30km on the subducting Philippine Sea Plate slab with average moment magnitudes (M-w) of similar to 6.6. Here we show that the slip accumulation rate (cumulative slip/lapse time) of these SSEs fluctuated over a decadal time scale. The rate increased twice around 2002 and 2013 concurrently with earthquake swarms in the Okinawa Trough. This suggests that episodic activations of the back-arc spreading at the Okinawa Trough caused extra southward movement of the block south of the trough and accelerated convergence at the Ryukyu Trench. |
英文关键词 | slow slip event GNSS slip accumulation rate Ryukyu subduction zone Okinawa Trough back-arc spreading |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000413148100024 |
WOS关键词 | 2011 TOHOKU EARTHQUAKE ; SUBDUCTION ZONE ; CRUSTAL DEFORMATION ; JAPAN ; ICELAND |
WOS类目 | Geosciences, Multidisciplinary |
WOS研究方向 | Geology |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/27978 |
专题 | 气候变化 |
作者单位 | Hokkaido Univ, Dept Nat Hist Sci, Sapporo, Hokkaido, Japan |
推荐引用方式 GB/T 7714 | Tu, Yoko,Heki, Kosuke. Decadal Modulation of Repeating Slow Slip Event Activity in the Southwestern Ryukyu Arc Possibly Driven by Rifting Episodes at the Okinawa Trough[J]. GEOPHYSICAL RESEARCH LETTERS,2017,44(18). |
APA | Tu, Yoko,&Heki, Kosuke.(2017).Decadal Modulation of Repeating Slow Slip Event Activity in the Southwestern Ryukyu Arc Possibly Driven by Rifting Episodes at the Okinawa Trough.GEOPHYSICAL RESEARCH LETTERS,44(18). |
MLA | Tu, Yoko,et al."Decadal Modulation of Repeating Slow Slip Event Activity in the Southwestern Ryukyu Arc Possibly Driven by Rifting Episodes at the Okinawa Trough".GEOPHYSICAL RESEARCH LETTERS 44.18(2017). |
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