Source parameters and site amplifcations estimated by generalized inversion technique : focusing on the 2018 Hokkaido Iburi-Tobu earthquake

• 資料種別: 記事
• タイトル: Source parameters and site amplifcations estimated by generalized inversion technique : focusing on the 2018 Hokkaido Iburi-Tobu earthquake
• 著者・編者: Kenichi Nakano; Hiroshi Kawase
• 出版事項: 日本 : Springer Nature
• 出版年月日等: 2019-06-13
• 出版年（W3CDTF）: 2019-06-13
• タイトル（掲載誌）: EPS : Earth, Planets and Space
• 巻号年月日等（掲載誌）: 71(66)
• 掲載巻: 71(66)
• ISSN（掲載誌）: 1880-5981
• ISSN-L（掲載誌）: 1343-8832
• 本文の言語コード: eng
• DOI: 10.1186/s40623-019-1047-1; https://doi.org/10.1186/s40623-019-1047-1
• 国立国会図書館永続的識別子: info:ndljp/pid/11377491; https://dl.ndl.go.jp/pid/11377491
• コレクション（共通）: 障害者向け資料
• コレクション（障害者向け資料：レベル1）: テキストデータ
• コレクション（個別）: 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; https://dl.ndl.go.jp/collections/B00035
• 収集根拠: オンライン資料収集制度
• 受理日（W3CDTF）: 2019-10-28T20:45:15+09:00
• 保存日（W3CDTF）: 2019-10-28
• 記録形式（IMT）: application/pdf
• オンライン閲覧公開範囲: 国立国会図書館内限定公開
• デジタル化資料送信: 図書館・個人送信対象外
• 遠隔複写可否（NDL）: 可
• 掲載誌（URI）: https://earth-planets-space.springeropen.com/articles
• 掲載誌（国立国会図書館永続的識別子）: info:ndljp/pid/11245705; https://dl.ndl.go.jp/pid/11245705
• 連携機関・データベース: 国立国会図書館 : 国立国会図書館デジタルコレクション; https://dl.ndl.go.jp

• 要約等: The 2018 Hokkaido Iburi-Tobu earthquake occurred on September 6. In this earthquake, seismic intensity 7 was measured at Shikanuma, Atsuma Town, and severe damage occurred in Hokkaido. The strong motions were recorded at observation stations including those nearby the epicenter, and the seismograms at a few stations close to the epicenter showed pulse-like waveforms. In the region called Yufutsu Plain, the underground structure is quite complex because Yufutsu Plain is located at the western margin of the Hidaka collision zone. Thus, the mechanism of generating the observed high-amplitude ground motions in this area has not been clarified yet. We performed the generalized inversion technique to estimate the fundamental characteristics of source terms and site amplifications at Yufutsu area to investigate the mechanism mentioned above. We found that the stress drop of the mainshock of the 2018 Hokkaido Iburi-Tobu earthquake was approximately 10Mpa, which corresponds to the upper limit of the crustal earthquakes in the past, and that the short-period level A was approximately 1.17 × 1019 N·m. We also evaluated the site amplification at sites close to the aftershock zone. We found that the sites in the north with relatively high altitudes showed dominant frequencies above several Hz, while the sites in the south with relatively low altitudes showed dominant frequencies of approximately 1 Hz or lower. We also found that the site amplifications were quite large at three sites (BBC, HKD126 and IBUH03) where we observed clear pulse-like waveforms, and confirmed that they all showed dominant frequencies at approximately 1 Hz.
• DOI: 10.1186/s40623-019-1047-1; https://doi.org/10.1186/s40623-019-1047-1
• オンライン閲覧公開範囲: インターネット公開
• 著作権情報: © The Author(s) 2019. 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.
• 関連情報（URI）: http://hdl.handle.net/2433/254107; http://id.ndl.go.jp/digimeta/11377491; https://dl.ndl.go.jp/pid/11377491; http://link.springer.com/content/pdf/10.1186/s40623-019-1047-1.pdf; http://link.springer.com/article/10.1186/s40623-019-1047-1/fulltext.html
• 参照: Strong-motion simulation for the 1944 Tonankai earthquake based on the statistical green’s function method and stochastic representation of complex source process; https://cir.nii.ac.jp/crid/1360302865736598272; 強震記録や木造被害分布に基づく，M7クラスの内陸地殻内地震で震度7が発生しやすい場所の整理; https://cir.nii.ac.jp/crid/1390021868461651968; 2018年北海道胆振東部地震の広帯域震源モデルの改良と水平・上下動の再現; https://cir.nii.ac.jp/crid/1390848250132601216; Three-dimensional S-wave attenuation structure in and around source area of the 2018 Hokkaido Eastern Iburi Earthquake, Japan; https://cir.nii.ac.jp/crid/2051433317024394496; Special issue “The 2018 Hokkaido Eastern Iburi Earthquake and Hidaka arc–arc collision system”; https://cir.nii.ac.jp/crid/2051714792003419776
• 連携機関・データベース: 国立情報学研究所 : CiNii Research; https://cir.nii.ac.jp/
• 提供元機関・データベース: 学術機関リポジトリデータベース; https://irdb.nii.ac.jp; 雑誌記事索引データベース; https://ndlsearch.ndl.go.jp; Crossref; https://www.crossref.org; CiNii Articles
• 書誌ID（NDLBibID）: 11377491; http://id.ndl.go.jp/bib/11377491
• NII論文ID: 120006879510