Coulomb stress change on inland faults during megathrust earthquake cycle in southwest Japan
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DOI[10.1186/s40623-020-01174-6]to the data of the same series
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- Material Type
- 記事
- Author/Editor
- Tsukasa MitogawaTakuya Nishimura
- Publication, Distribution, etc.
- Publication Date
- 2020-05-13
- Publication Date (W3CDTF)
- 2020-05-13
- Periodical title
- EPS : Earth, Planets and Space
- No. or year of volume/issue
- 72(66)
- Volume
- 72(66)
- ISSN (Periodical Title)
- 1880-5981
- ISSN-L (Periodical Title)
- 1343-8832
- Text Language Code
- eng
- DOI
- 10.1186/s40623-020-01174-6
- Persistent ID (NDL)
- info:ndljp/pid/11520520
- Collection
- Collection (Materials For Handicapped People:1)
- Collection (particular)
- 国立国会図書館デジタルコレクション > 電子書籍・電子雑誌 > その他
- Acquisition Basis
- オンライン資料収集制度
- Date Accepted (W3CDTF)
- 2020-08-03T12:00:21+09:00
- Date Captured (W3CDTF)
- 2020-08-03
- Format (IMT)
- application/pdf
- Access Restrictions
- 国立国会図書館内限定公開
- Service for the Digitized Contents Transmission Service
- 図書館・個人送信対象外
- Availability of remote photoduplication service
- 可
- Periodical Title (URI)
- Periodical Title (Persistent ID (NDL))
- info:ndljp/pid/11467692
- Data Provider (Database)
- 国立国会図書館 : 国立国会図書館デジタルコレクション
- Summary, etc.
- In the subduction zone, megathrust earthquakes may modulate the shallow crustal seismicity in the overriding plate. Historical documents indicate the frequent occurrence of large shallow crustal earthquakes in the overriding continental plate 50 years before and 10 years after the megathrust earthquakes along the Nankai trough in southwest Japan. In this study, we model megathrust earthquake cycles in a simple oblique subduction zone considering the viscoelasticity, and calculate the temporal evolution of the Coulomb failure stress changes (ΔCFS) on the crustal faults in the overriding plate. Further, we examine the variation of ΔCFS depending on the location and fault type, and the active period of crustal earthquakes in which ΔCFS exceeds the previous maximum. Our viscoelastic model suggests that the dependency of the active period on the distance from the megathrust fault is less when the intrinsic loading rate of the inland fault is low. Moreover, it suggests that the viscoelastic stress evolution on faults with negative coseismic ΔCFS renders the active period longer or shorter than those in a pure elastic medium. The temporal evolution of ΔCFS on most major active faults in southwest Japan can be categorized into two groups with the following different characteristics: one is that ΔCFS is positive coseismically and peaks 10 years after a megathrust earthquake. The other is that ΔCFS is negative coseismically, and does not recover to the preseismic one for more than 50 years after a megathrust earthquake. This can explain the temporal sequence of the historical earthquakes in southwest Japan. Our model which includes viscoelastic relaxation successfully expresses the activation of shallow crustal earthquakes in the overriding continental plate not only before the megathrust earthquake, but also after. If the apparent frictional coefficient is less than ~ 0.1, the coseismic ΔCFS on the source faults of the 1943 Mj7.3 Tottori earthquake, 1596 M7.0 Keicho Iyo earthquake, and 1596 M7.5 Keicho Fushimi earthquake that occurred within 10 years before the megathrust earthquake along the Nankai trough is negative. Therefore, to explain the occurrence of these historical earthquakes, our model suggests that the apparent frictional coefficient must be less than ~ 0.1.
- DOI
- 10.1186/s40623-020-01174-6
- Access Restrictions
- インターネット公開
- Rights (production)
- © The Author(s) 2020. This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/.
- Related Material (URI)
- Is Referenced By
- Stress change in southwest Japan due to the 1944–1946 Nankai megathrust rupture sequence based on a 3-D heterogeneous rheological modelSpecial issue "Crustal dynamics : toward integrated view of island arc seismogenesisDriving stress and seismotectonic implications of the 2013 Mw5.8 Awaji Island earthquake, southwestern Japan, based on earthquake focal mechanisms before and after the mainshock
- References
- Long‐term changes in the Coulomb failure function on inland active faults in southwest Japan due to east‐west compression and interplate earthquakesContinuous GPS Array and Present-day Crustal Deformation of JapanStrain partitioning and interplate coupling along the northern margin of the Philippine Sea plate, estimated from Global Navigation Satellite System and Global Positioning System-Acoustic dataGeneric Mapping Tools: Improved Version ReleasedGeologically current plate motionsThe 1995 Kobe, Japan, earthquake: A long-delayed aftershock of the offshore 1944 Tonankai and 1946 Nankaido earthquakesThe effect of mineral bond strength and adsorbed water on fault gouge frictional strengthA dislocation model for the earthquake cycle at convergent plate boundariesIntraplate deformation in the Japanese Islands: A kinematic study of intraplate deformation at a convergent plate margin42 A list of deadly earthquakes in the world: 1500–2000Introduction to Special Section: Stress Triggers, Stress Shadows, and Implications for Seismic HazardA dislocation model of strain accumulation and release at a subduction zoneFriction of rocksFrictional coefficient on faults in a seismogenic region inferred from earthquake mechanism solutionsA physical mechanism for temporal variation in seismicity in Southwest Japan related to the great interplate earthquakes along the Nankai troughConditions for fault-valve behaviourQuasi-static internal deformation due to a dislocation source in a multilayered elastic/viscoelastic half-space and an equivalence theoremA statistical model of temporal variation of seismicity in the inner zone of southwest Japan related to the great interplate earthquakes along the Nankai TroughA physical understanding of large interplate earthquakes
- References (URI)
- Data Provider (Database)
- 国立情報学研究所 : CiNii Research
- Original Data Provider (Database)
- 学術機関リポジトリデータベース雑誌記事索引データベースCrossref科学研究費助成事業データベースCrossrefCrossrefCrossref
- Bibliographic ID (NDL)
- 11520520