Surface fault ruptures associated with the 14 April foreshock (Mj 6.5) of the 2016 Kumamoto earthquake sequence, southwest Japan

• Material Type: 記事
• Title: Surface fault ruptures associated with the 14 April foreshock (Mj 6.5) of the 2016 Kumamoto earthquake sequence, southwest Japan
• Author/Editor: Nobuhiko Sugito; Hideaki Goto; Yasuhiro Kumahara
• Publication, Distribution, etc.: 日本 : Springer science+business media
• Publication Date: 2016-11-03
• Publication Date (W3CDTF): 2016-11-03
• Periodical title: EPS : Earth, Planets and Space
• No. or year of volume/issue: 68(170)
• Volume: 68(170)
• ISSN (Periodical Title): 1880-5981
• ISSN-L (Periodical Title): 1343-8832
• Text Language Code: eng
• DOI: 10.1186/s40623-016-0547-5; https://doi.org/10.1186/s40623-016-0547-5
• Persistent ID (NDL): info:ndljp/pid/10267441; https://dl.ndl.go.jp/pid/10267441
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• Date Accepted (W3CDTF): 2017-01-25T12:55:04+09:00
• Date Captured (W3CDTF): 2017-01-13
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• Periodical Title (URI): http://earth-planets-space.springeropen.com/articles?searchType=journalSearch&sort=PubDate&page=3
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• Summary, etc.: The 2016 Kumamoto earthquake sequence was a rare event worldwide in that the surface ruptures associated with the largest foreshock (Mj 6.5) of 21:26 (JST), 14 April ruptured again during the mainshock (Mj 7.3) of 01:25 (JST), 16 April. The 14 April Mj 6.5 earthquake produced 6-km-long surface ruptures along the central portion of the Futagawa–Hinagu fault zone (FHFZ). The mainshock produced 31-km-long surface ruptures along the central to northeastern part of the FHFZ. Field observations and eyewitness accounts documented that the offsets of the ruptures associated with the 14 April foreshock became larger after the 16 April mainshock, suggesting that the same portion of the fault ruptured to the surface twice in the Kumamoto earthquake sequence. The 6-km-long surface ruptures associated with the largest foreshock are located near a geometric bend of the FHFZ characterized by ~50° change in strike. The epicenter of the mainshock is also located near the bend. These observations imply that the Kumamoto earthquake sequence was initiated due to a stress concentration on the bend of the FHFZ, and the mainshock was initiated approximately at the same place about 28 h after the largest foreshock. This foreshock/mainshock sequence of the Kumamoto earthquake is not successive events on the adjacent different fault zones, because the 6-km-long surface ruptures of the largest foreshock are part of the 31-km-long surface ruptures of the mainshock.
• DOI: 10.1186/s40623-016-0547-5; https://doi.org/10.1186/s40623-016-0547-5
• Access Restrictions: インターネット公開
• Rights (production): © 2016 The Author(s). This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.
• Related Material (URI): http://hdl.handle.net/2433/218895; http://id.ndl.go.jp/digimeta/10267441; https://dl.ndl.go.jp/pid/10267441; http://link.springer.com/content/pdf/10.1186/s40623-016-0547-5.pdf; http://link.springer.com/article/10.1186/s40623-016-0547-5/fulltext.html
• Is Referenced By: Landslide detection using polarimetric ALOS-2/PALSAR-2 data: a case study of 2016 Kumamoto earthquake in Japan; https://cir.nii.ac.jp/crid/1360004235887501824; Ecosystem changes following the 2016 Kumamoto earthquakes in Japan: Future perspectives; https://cir.nii.ac.jp/crid/1360285706539836544; Building damage mapping of 2016 Kumamoto, Japan, earthquake using ALOS-2/PALSAR-2 interferometric coherence; https://cir.nii.ac.jp/crid/1360285710861723008; Strong ground motion simulations of the 2016 Kumamoto earthquakes using corrected empirical Green’s functions: methods and results for ESG6 blind prediction Steps 2 and 3 with improved parameters; https://cir.nii.ac.jp/crid/1360584340723916928; Has 20 Years of Japanese Earthquake Research Enhanced Seismic Disaster Resilience in Kumamoto?; https://cir.nii.ac.jp/crid/1390001288084794112; 航空レーザ測量と地表踏査を併用した平成28年熊本地震の地表地震断層調査; https://cir.nii.ac.jp/crid/1390564238111792128; 2016年熊本地震と布田川断層，地震地質災害; https://cir.nii.ac.jp/crid/1390587506250862080
• References: Role of Fault Bends in the Initiation and Termination of Earthquake Rupture; https://cir.nii.ac.jp/crid/1363951795383185664; 阿そカルデラ西ろくの活断層群と側火口の位置; https://cir.nii.ac.jp/crid/1390001206496840448
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• Bibliographic ID (NDL): 10267441; http://id.ndl.go.jp/bib/10267441
• NAID: 120005997868