Table 1.

Surface deformation and volume flux data for each stage

Stage	Time interval	Minutes after 9:30 (duration)	Surface deformation	Surface displacement (cm)	Rate (cm/h)	Volume change ($m^3$)	Volume change rate ($m^3/s$)
1	9:34:00–9:59:30	4–29.5 (25.5)	Inflation	0.8	1.9	11,215.87	7.33
2	9:59:30–10:10:30	29.5–40.5 (11)	Inflation	0.6	3.3	4,785.58	7.25
3	10:10:30–10:19:30	40.5–49.5 (9)	Inflation	1.1	7.3	10,934.59	20.25
4	10:19:30–10:44:00	49.5–74 (24.5)	Stable	0.1	0.2	1,580.53	1.08
5	10:44:00–10:47:00	74–77 (3)	Subsidence	$-$0.2	$-$4.0	$-$2,763.08	$-$15.35
6	10:47:00–10:56:00	77–86 (9)	Inflation	0.8	5.3	7,678.41	14.22
7	10:56:00–11:06:30	86–96.5 (10.5)	Stable	$-$0.2	$-$1.1	1,192.48	1.89