15 research outputs found
Spatial distribution and focal mechanisms of aftershocks of the 2011 off the Pacific coast of Tohoku Earthquake
日本の本州中部山北地域の島弧―島弧衝突帯における深層掘削
We carried out borehole drilling in the Yamakita area near an active fault of the arc-arc collision zone in the western part of Kanagawa Prefecture. Slime and core samples were obtained. The borehole geology was established by examined them using petrographic analyses and geophysical logging data. We found that the southwestern slope of Mt. Maruyama was down-faulted from the northern slope of the mountain by an unknown fault. After drilling was completed, the borehole was established as a Hi-net seismic observation station. Data are collected by the Hi-net observation system and made available through the INTERNET
Recent progress of seismic observation networks in Japan —Hi-net, F-net, K-NET and KiK-net—
Initial-rupture fault, main-shock fault, and aftershock faults: Fault geometry and bends inferred from centroid moment tensor inversion of the 2005 west off Fukuoka prefecture earthquake
Initial-rupture fault, main-shock fault, and aftershock faults: Fault geometry and bends inferred from centroid moment tensor inversion of the 2005 west off Fukuoka prefecture earthquake
Deep Drilling at the Arc-arc Collision Zone in the Yamakita Area, Central Honshu, Japan
We carried out borehole drilling in the Yamakita area near an active fault of the arc-arc collision zone in the western part of Kanagawa Prefecture. Slime and core samples were obtained. The borehole geology was established by examined them using petrographic analyses and geophysical logging data. We found that the southwestern slope of Mt. Maruyama was down-faulted from the northern slope of the mountain by an unknown fault. After drilling was completed, the borehole was established as a Hi-net seismic observation station. Data are collected by the Hi-net observation system and made available through the INTERNET