Measures

East component

North component

Vertical component


Number of stations

796

794

913

Percentage (GEONET)

66.44

66.28

76.21

Percentage (northeastern)

65.59

69.35

76.88

Mean values (mm)

− 2.43

2.83

− 4.75

Standard deviations (mm)

2.02

2.17

5.00

 The first row lists the numbers of stations to move westward, northward and downward, respectively. The next two rows list the percentages of displacements from the whole GEONET network and the northeastern Japan, respectively. The percentages in the vertical component are referred to downward movement. The fourth row lists the mean values of displacements in the east, north and vertical directions. The last row gives the robust adaptive mean values of standard deviations of displacements between two consecutive epochs, as computed from the 30 min of GEONET GPS data before the earthquake