Fig. 8

The slip distributions of the Hyuga-nada L-SSEs in previous studies, which are also summarized in Table 1. The pink line represents the location of the mantle wedge corner (MWC), which coincides with the isodepth contour of 30 km. (a) Slip distribution by Yarai and Ozawa (2013). The dark red line represents the slip distribution of an L-SSE from January 1, 2005 to January 1, 2006, the red line represents the slip distribution of an L-SSE from January 1, 2007 to January 1, 2008, and the bright red line represents the slip distribution of an L-SSE from January 1, 2009 to July 20, 2010. The contour intervals of the slip amounts are 2 cm. (b) Slip distribution of L-SSEs by Ozawa (2017). The dark blue line represents the slip distribution of an L-SSE from October 1, 2013 to May 1, 2014, the blue line represents the slip distribution of an L-SSE from July 1, 2015 to February 1, 2016, and the light blue line represents the slip distribution of an L-SSE from February 1, 2016 to April 10, 2016. The contour intervals of the slip amounts are 4 cm. (c) Locations of L-SSEs represented by rectangular faults, which were detected by Takagi et al. (2019). The dashed line of each rectangular fault represents its shallower side. The black, dark blue, dark green, dark red, blue, green, red, orange, purple, yellow, light blue, and yellow-green rectangles indicate the estimated locations of rectangular fault planes for the L-SSEs whose onset dates were September 30, 1996, December 23, 1997, November 2, 1998, February 12, 2000, January 28, 2002, March 28, 2002, February 21, 2005, October 6, 2006, May 22, 2008, August 12, 2009, April 10, 2011, and July 15, 2013, respectively