活断層の活動開始時期を対象とした調査・解析手法にかかわる既存情報の収集・整理

Collection and analysis of existing information on applicability of investigation methods for estimation of beginning age of faulting in present faulting pattern

道家 涼介; 安江 健一; 中安 昭夫; 新里 忠史  ; 谷川 晋一; 田中 竹延*; 青木 道範*; 関谷 亜矢子*

Doke, Ryosuke; Yasue, Kenichi; Nakayasu, Akio; Niizato, Tadafumi; Tanikawa, Shinichi; Tanaka, Takenobu*; Aoki, Michinori*; Sekiya, Ayako*

本研究では、活断層の活動開始時期を推定するための調査手法について、既存情報の収集・整理を行い、それぞれの調査手法の原理や適用する際の留意点,不確実性などを抽出し、適切に作業を実施する手順をタスクフローとして整理した。加えて、各調査手法の国内における適用事例を整理し、活断層の活動開始時期及びその正確度を示した空間分布図を作成した。

In this study, existing information related to methods for the estimation of the beginning age of the faulting in the present faulting pattern on the active fault were collected and reviewed. A principle of method, noticing points and technical know-hows in the application of the methods, data uncertainty, and so on were extracted from the existing information. Based on these extracted information, task-flows indicating working process on the estimation of the beginning age for the faulting of the active fault were illustrated on each method. Additionally, the distribution map of the beginning age with accuracy of faulting in the present faulting pattern on the active fault was illustrated.