検索対象:     
報告書番号:
※ 半角英数字
 年 ~ 
 年

活断層地形が不明瞭なせん断帯における力学的影響範囲の検討; 南九州せん断帯の例

Investigation of dynamical influence range in shear zone for unclear active fault topography; Example of southern Kyushu

比嘉 咲希*; 照沢 秀司*; 丹羽 正和  ; 島田 耕史  ; 小松 哲也 

Higa, Saki*; Terusawa, Shuji*; Niwa, Masakazu; Shimada, Koji; Komatsu, Tetsuya

活断層地形が不明瞭な南九州せん断帯における1997年鹿児島県北西部地震の余震域に、南北約27kmの踏査範囲を設定し、小断層の分布、断層面に発達する線構造や変位センスデータを取得し、応力逆解析を行った結果、せん断帯中央部の南北幅2kmの範囲に限り、南九州せん断帯の左横ずれと調和的な北東-南西圧縮・北西-南東引張の応力場が卓越することが分かった。

In the southern Kyushu shear zone, geological investigation along north-south ca.27 km area near aftershock distributions of the 1997 Kagoshima-ken hokubu earthquake depict striation and sense of shear of small faults. As a result of stress inversion analysis, it was found that the NE-SW compression and NW-SE tension stress fields, consistent with the left-lateral shear of the southern Kyushu shear zone, is localized within central 2 km north-south width zone.

Access

:

- Accesses

InCites™

:

Altmetrics

:

[CLARIVATE ANALYTICS], [WEB OF SCIENCE], [HIGHLY CITED PAPER & CUP LOGO] and [HOT PAPER & FIRE LOGO] are trademarks of Clarivate Analytics, and/or its affiliated company or companies, and used herein by permission and/or license.