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タイトル: 2011年東北地方太平洋沖地震の津波高調査
その他のタイトル: Field Surveys of Tsunami Heights from the 2011 off the Pacific Coast of Tohoku, Japan Earthquake
著者: 都司, 嘉宣
佐竹, 健治
石辺, 岳男
楠本, 聡
原田, 智也
西山, 昭仁
金, 幸隆
上野, 俊洋
室谷, 智子
大木, 聖子
杉本, めぐみ
泊, 次郎
Heidarzadeh, Mohammad
綿田, 辰吾
今井, 健太郎
Choi, Byung Ho
Yoon, Sung Bum
Bae, Jae Seok
Kim, Kyeong Ok
Kim, Hyun Woo
著者(別言語): Tsuji, Yoshinobu
Satake, Kenji
Ishibe, Takeo
Kusumoto, Satoshi
Harada, Tomoya
Nishiyama, Akihito
Kim, Haeng Yoong
Ueno, Toshihiro
Murotani, Satoko
Oki, Satoko
Sugimoto, Megumi
Tomari, Jiro
Watada, Shingo
Imai, Kentaro
キーワード: the 2011 off the Pacific coast of Tohoku Earthquake
tsunami height
field survey
inundation height
runup height
tsunami height in port
発行日: 2012年3月16日
出版者: 東京大学地震研究所
掲載誌情報: 東京大学地震研究所彙報. 第86号第3/4冊, 2012.3.16, pp. 29-279
抄録: We report the results of field surveys conducted by the Earthquake Research Institute, to measure tsunami heights from the 2011 off the Pacific coast of Tohoku, Japan Earthquake (M 9.0), on March 11. Measurements were taken at 296 points on the Sanriku coasts of Aomori, Iwate, and Miyagi Prefectures, and the Pacific coasts of Ibaraki and Chiba Prefectures. The data are included in the results of the 2011 Tohoku Earthquake Tsunami Joint Survey Group. We did not cover the Sendai plain in the southern Miyagi Prefecture because other parties extensively measure there, nor Fukushima Prefecture because of the accident of the Fukushima Dai-ichi nuclear power plant. The twelve surveys first sought traces indicating tsunami runup or inundation heights. Reliability was classified into A (most reliable based on clear physical evidence and eyewitness accounts), B (mostly based on natural traces), and C (least reliable based on equivocal evidence). Most physical evidence obtained after June was not significant; therefore, reliance was mostly placed on eyewitness accounts. Locations and relative heights above sea level were measured using handheld GPS receivers, auto-level, or total station. The measured heights were corrected for differences in tide level between measurement time and tsunami arrival time. The results are shown on table and four regional maps; however, the details of each measurement, including locations shown on 1:25,000 maps and photographs of evidence are shown in the Appendix. Along the northern Sanriku coast (Aomori and Iwate), most of the 141 heights range between 10m and 30m. Runup heights exceeding 30m were measured at one location in Noda Village and nine locations in Miyako City. On the southern Sanriku coast in Miyagi, most of the 76 measurements range between 4 and 20 m. On the Ibaraki coast, 36 measurements range from 2.8 to 8.1 m, and the heights generally decease toward the south. On the Chiba coast, 43 measurements range from 0.7 to 7.9 m, with the maximum height near Iioka, Asahi City.
URI: http://hdl.handle.net/2261/51526
ISSN: 00408972
出現カテゴリ:東京大学地震研究所彙報
東京大学地震研究所彙報

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