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Table 1 Search range and step for the model parameters and their optimal values with uncertainties (square brackets) for a Poisson’s ratio of 0.45

From: Deformation source revealed from leveling survey in Jigokudani valley, Tateyama volcano, Japan

Parameter Range Step Optimal value
N–S location − 1000–0 m 25 m − 325 [− 325,− 325] m
E–W location − 1000–0 m 25 m − 650 [− 650,− 650] m
Depth from the surface 0–500 m 25 m 50 [50, 75] m
Length 25–1000 m 25 m 650 [625, 675] m
Width 25–1000 m 25 m 425 [150, 1000] m
Dip 0–90° 67 [61, 72]°
Strike N0–359° E N18 [17, 19]° E
Opening − 500–500 cm 1 cm − 59 [− 74 to − 43] cm
  1. The origin of the horizontal coordinate is BM. 1 (137.597735° E, 36.58748187° N). The uncertainties are the 99% confidence intervals estimated from an F-test (Árnadóttir and Segall 1994). The position is at the center of the top edge of the fault. The dip is clockwise from the horizontal, and the strike is clockwise from the north