Airborne Measurement in the Ash Plume from Mount Sakurajima: Analysis of Gravitational Effects on Dispersion and Fallout

Table 5

Eyjafjallajökull data 2010, scaled to 20 megatons/day and = 25 m/s.

Day	Mo	Mt/d	Dir	Dist; km	m/s	(63); %	(31); %	micron			km	Cat 1	Cat 2
15	Apr	7,5	E	58	40	44	33	93	1,60	0,74	78	73	58	19
15	Apr	7,5	E	60	40	56	45	43	1,60	0,74	81	34	27	18
15	Apr	7,5	E	58	40	70	51	30	1,60	0,74	78	24	19	19
15	Apr	7,5	E	56	40	65	45	37	1,60	0,74	76	29	23	19
17	Apr	35	S	11	15	47	33	73	0,60	1,09	10	95	122	143
5	May	35	SE	30	15	46	29	70	0,60	1,09	28	90	116	53
13	May	25	SE	11,5	10	38	23	82	0,40	1,00	12	130	206	126
19	May	4	NE	8	15	42	27	80	0,60	0,63	13	103	133	115

The self-similarity factor =    is found 1450 km m = 1,45 m².