Figure 4
From: Arc-arc collision caused the 2018 Eastern Iburi earthquake (M 6.7) in Hokkaido, Japan
A schematic diagram for the crustal and upper-mantle structure beneath the study region. (a) Subduction of the Pacific plate beneath the Okhotsk plate and collision of the Kuril arc with the NE Japan arc. (b) A NE-SW vertical cross-section showing the arc-arc collision and mechanism of the three large earthquakes in the Hidaka collision zone. Fluids from dehydration of the subducting Pacific slab also contribute to the generation of the large earthquakes.
