Evolution of crustal deformation in the northeast–central Japanese island arc: Insights from fault activity. (8th February 2017)

• Record Type: Journal Article
• Authors: Miyakawa, Ayumu; Otsubo, Makoto
• Is Part Of: Island arc. Volume 26:Number 2(2017)
• Page Start: n/a
• Page End: n/a
• Publication Date: 2017-02-08
• Subjects: active fault -- eastern margin of the Japan Sea -- Niigata–Kobe Tectonic Zone -- non‐active fault -- slip tendency -- stress inversion; Plate tectonics -- Periodicals; Island arcs -- Periodicals; Geodynamics -- Periodicals; 551.136
• DOI: 10.1111/iar.12179
• Languages: English
• ISSNs: 1038-4871

Abstract

Abstract: We evaluated fault activity in northeast–central Japan based on fault orientation, regional stress field, and slip tendency analysis for active and non‐active faults (i.e. faults for which Quaternary activity has not been identified). Slip tendency is generally higher along active faults than non‐active faults, although a high slip tendency was observed along some non‐active faults, indicating their potential to become active. The potential for fault activity along non‐active faults can be modeled using the temporal evolution from non‐active to active during long‐term crustal deformation. The density of potentially active faults varies spatially across the study areas and reflects the temporal evolution of crustal deformation in northeast–central Japan. Abstract : We evaluated fault activity in northeast–central Japan based on fault orientation, regional stress field, and slip tendency analysis for active and non‐active faults (i.e., faults for which Quaternary activity has not been identified). Slip tendency is generally higher along active faults than non‐active faults, although a high slip tendency was observed along some non‐active faults, indicating their potential to become active. The density of potentially active faults varies spatially across the study area and reflects the temporal evolution of crustal deformation in northeast–central Japan.