Fault geometry of M6-class normal-faulting earthquakes in the outer trench slope of Japan Trench from ocean bottom seismograph observations

Progress in Earth and Planetary Science

Table 1 Fault parameters of the September 20, 2017 earthquake

	Oceanic crust	Uppermost mantle
Depth of the updip end (km below sea level)	7.98	14.0
Dip (°)	85	65
Rake (°)	− 90	− 90
Length (km)	10.3	10.3
Width (km)	6.02	9.05
Case 1: slip (cm)	24.7	24.7
Case 2: slip (cm)	0.0	41.1