Zisin Ser 2(60):1–20 (in Japanese with English abstract) Hirose F, Nakajima J, Hasegawa A (2007) Three-dimensional velocity structure and configuration of the Philippine Sea slab beneath Southwestern Japan, estimated by double-difference tomography. Hasegawa (2008), Three-dimensional seismic velocity structure and configuration of the Philippine Sea slab in southwestern Japan estimated by double-difference tomography, J.

Hasegawa (2009), Seismotectonics beneath the Tokyo metropolitan area, Japan: Effect of slab-slab contact and overlap on seismicity, J. Hasegawa (2006), Anomalous low-velocity zone and linear alignment of seismicity along it in the subducted Pacific slab beneath Kanto, Japan: Reactivation of subducted fracture zone?, Geophys. Matsuzawa (2010), Anomalous deepening of a seismic belt in the upper-plane of the double seismic zone in the Pacific slab beneath the Hokkaido corner: Possible evidence for thermal shielding caused by subducted forearc crust materials, Earth Planet. Yellow:Earthquakes from March 14 to August 31Point:Earthquakes from March 9 to August 31 over magnitude 1.0Īlso available for scaling, viewing section by arbitrary clipping plane, and so on. Orange:Surface of Philippine Sea plateSphere:Earthquakes over magnitude 6.0 Screen shot (added over magnitude 1.0 ver). If you use this data, show source as “” and link to this page.DownloadĪdded Hypocenters over Magnitude 1.0 Ver.: You can see that spread of hypocenters stops where Pacific Plate is sinking under Philippine Sea plate.Īdditionally, 8 earthquakes over magnitude 6.0 occurred on March 9 and 10 just before the main earthquake at the northeast of the epicenter. The point is bounds of Pacific Plate and Eurasian plate.Īfter the main earthquake, 66 earthquakes over magnitude 6.0 occurred nearby the epicenter until March 13.įrom March 14 to end of August, 51 earthquakes over magnitude 6.0 occurred mainly around outer edge of the epicenter. DescriptionĢ011 Tohoku earthquake and tsunami, marked magnitude 9.0, occurred on March 11 at the depth of 23.7 km offshore Miyagi prefecture. You can see positional relation between hypocenters and plates, time course of earthquakes. 3D model of 2011 Tohoku earthquake’s hypocenter disposition.Įarthquakes over magnitude 6.0 are showed by spheres.

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