Skip to main content

Advertisement

Table 2 Amount and rate of changes in ground surface elevation for each period

From: Seismic and inter-seismic ground surface deformations of the Murono mud volcano (central Japan): a laser scanning approach

Period I II III IV
Year 2004–2011 2011–2013 2013–2014 2014–2015
Duration (months) 85 30 12 12
Strong earthquakes and maximum acceleration 2004 Chuetsu (17.5 cm/s2) 2007 Chuetsu-oki (3.02 cm/s2) 2011 N Nagano (3.08 cm/s2)   2014 Kamishiro (0.22 cm/s2)  
Mean elevation change (mm) 44.1 4.7 0.2 11.6
Standard deviation of elevation change (mm) 128.4 19.8 19.0 12.8
1st percentile −222.5 −34.8 −46.3 −19.5
99th percentile 397.5 59.7 30.0 30.0
Mean rate of elevation change (mm/year) 6.2 1.9 0.2 11.7