globalchange  > 气候减缓与适应
DOI: 10.1038/ngeo2796
论文题名:
Earthquake potential revealed by tidal influence on earthquake size-frequency statistics
作者: Ide S.; Yabe S.; Tanaka Y.
刊名: Nature Geoscience
ISSN: 17520894
出版年: 2016
卷: 9, 期:11
起始页码: 834
结束页码: 837
语种: 英语
Scopus关键词: Chile earthquake 2010 ; deformation mechanism ; earthquake catalogue ; earthquake magnitude ; earthquake rupture ; environmental stress ; fault plane ; frequency analysis ; geostatistics ; microtremor ; plate boundary ; probability ; shear stress ; subduction zone ; Sumatra earthquake 2004 ; Tohoku earthquake 2011 ; Chile ; Greater Sunda Islands ; Honshu ; Japan ; Maule ; Sumatra ; Sunda Isles ; Tohoku
英文摘要: The possibility that tidal stress can trigger earthquakes is long debated. In particular, a clear causal relationship between small earthquakes and the phase of tidal stress is elusive. However, tectonic tremors deep within subduction zones are highly sensitive to tidal stress levels, with tremor rate increasing at an exponential rate with rising tidal stress. Thus, slow deformation and the possibility of earthquakes at subduction plate boundaries may be enhanced during periods of large tidal stress. Here we calculate the tidal stress history, and specifically the amplitude of tidal stress, on a fault plane in the two weeks before large earthquakes globally, based on data from the global, Japanese, and Californian earthquake catalogues. We find that very large earthquakes, including the 2004 Sumatran, 2010 Maule earthquake in Chile and the 2011 Tohoku-Oki earthquake in Japan, tend to occur near the time of maximum tidal stress amplitude. This tendency is not obvious for small earthquakes. However, we also find that the fraction of large earthquakes increases (the b-value of the Gutenberg-Richter relation decreases) as the amplitude of tidal shear stress increases. The relationship is also reasonable, considering the well-known relationship between stress and the b-value. This suggests that the probability of a tiny rock failure expanding to a gigantic rupture increases with increasing tidal stress levels. We conclude that large earthquakes are more probable during periods of high tidal stress. © 2016 Macmillan Publishers Limited, part of Springer Nature. All rights reserved.
Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/105891
Appears in Collections:气候减缓与适应
科学计划与规划

Files in This Item:

There are no files associated with this item.


作者单位: Department of Earth and Planetary Science, University of Tokyo, 7-3-1 Hongo, Bunkyo, Tokyo, Japan; Earthquake Research Institute, University of Tokyo, 1-1-1 Yayoi, Bunkyo, Tokyo, Japan

Recommended Citation:
Ide S.,Yabe S.,Tanaka Y.. Earthquake potential revealed by tidal influence on earthquake size-frequency statistics[J]. Nature Geoscience,2016-01-01,9(11)
Service
Recommend this item
Sava as my favorate item
Show this item's statistics
Export Endnote File
Google Scholar
Similar articles in Google Scholar
[Ide S.]'s Articles
[Yabe S.]'s Articles
[Tanaka Y.]'s Articles
百度学术
Similar articles in Baidu Scholar
[Ide S.]'s Articles
[Yabe S.]'s Articles
[Tanaka Y.]'s Articles
CSDL cross search
Similar articles in CSDL Cross Search
[Ide S.]‘s Articles
[Yabe S.]‘s Articles
[Tanaka Y.]‘s Articles
Related Copyright Policies
Null
收藏/分享
所有评论 (0)
暂无评论
 

Items in IR are protected by copyright, with all rights reserved, unless otherwise indicated.