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Earth, Planets and Space

Table 3 Parameters of best-fit source models (2016—2018)

From: Precursory ground deformation of the 2018 phreatic eruption on Iwo-Yama volcano, revealed by four-dimensional joint analysis of airborne and spaceborne InSAR

Parameters

August 2016–September 2017

September 2017–April 2018

Okada model (sill)

Mogi model

Okada model

Mogi model

Latitude [deg]

31.946388

31.946223

(Fixed)

(Fixed)

Longitude [deg]

130.852999

130.852850

(Fixed)

(Fixed)

Depth [m]

194 [183/205]

34 [25/62]

(Fixed)

(Fixed)

Length [m]

108 [82/145]

–

(Fixed)

–

Width [m]

31 [20/48]

–

(Fixed)

–

Dip [deg]

0 (fixed)

–

0 (Fixed)

–

Strike [deg]

0 (fixed)

–

0 (Fixed)

–

Opening [m]

1.37 [0.79/1.95]

–

0.57 [0.52/0.61]

–

Volume change [m3]

4587

189 [150/215]

1908

91 [63/113]

  1. Parameter definitions are the same as those in Table 2. Model parameters for the period of 2017–2018, except for opening and volume change, are fixed as those for the period of 2016–2017
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