Figure 1
From: Arc-arc collision caused the 2018 Eastern Iburi earthquake (M 6.7) in Hokkaido, Japan
Tectonic settings and seismic stations used in this study. (a) Tectonic settings of the study region. The red dashed line denotes the location of the present study area. The red star and the red beach ball represent the epicenter and focal mechanism of the 2018 Eastern Iburi earthquake (M 6.7). The black solid and dashed lines show the plate boundaries. The thin dashed lines denote depth contours of the upper boundary of the subducting Pacific slab, which is modified from refs56,59. The pink zone shows the Kuril forearc sliver. The red triangles denote active volcanoes. (b) Distribution of 136 seismic stations (blue squares) used in this study. The black solid lines denote major active faults. The blue and purple stars denote epicenters of the 1982 Urakawa-oki earthquake (M 7.1) and the 1970 Hidaka earthquake (M 6.7), respectively. The yellow and blue patches denote the Kamuikatan metamorphic belt and the Hidaka metamorphic belt, respectively. This figure was generated using the Generic Mapping Tools58 version 5.4.3 (http://gmt.soest.hawaii.edu).
