Analog field-scale acoustic study of volcanic eruption directivity using a tiltable liquid nitrogen-charged water cannon

Earth, Planets and Space

Table 1 Experiment results

N	Event time (UTC)^a	Azimuth^b	Blast angle^c	Pressure (Pa)^d	Comment^e
1	02:26:45	Vertical	0^o	28.8	L&P
2	02:35:49	Vertical	0^o	20.9	L&P
3	02:47:41	250^o	12^o	31.2	L&P
4					Failed discharge
5	03:26:24	250^o	12^o	42.3	L&P
6	03:51:41	250^o	24^o	29.4	L&P
7					Failed discharge
8	04:13:48	250^o	24^o	28.6	MY
9	04:21:40	Vertical	0^o	72.7	MY
10	04:35:04	70^o	12^o	39.8	MY
11	04:50:12	70^o	24^o	56.1	MY
12	04:57:21	70^o	24^o	38.6	MY

Bold denotes interpreted experiments
^aExperiment date is 3 May 2016 14:26–16:57 NZST (3 May 2016 2:26–4:57 UTC)
^bMeasured clockwise from north
^cMeasured from vertical
^dPeak positive pressure measured from beneath the explosion source
^eBottle type detonated: (L&P) brown soft-drink bottles, (MY) clear soft-drink bottles