Continuous passive degassing

Event type

1

2a

2b

3

all

Number

439

202

31

21

693

Frequency (Events / Minute)

5.6

2.6

0.4

0.3

8.8

Duration (s)

Min

0.01

0.10

0.43

0.01

Max

2.1

2.2

2.2

2.2

Mean

0.7

0.7

1.0

0.7

St. Dev

0.5

0.5

0.5

0.5

Height (m)

Min

1

1

1

1

Max

28

12

19

28

Mean

11

5

8

10

St. Dev

7

3

5

7

Velocity (m/s)

Min

1.2

0.8

0.3

0.3

Max

33

20

48

48

Mean

12

10

13

12

St. Dev

5

5

9

6

Launch Angle (°)

Min

18

18

16

16

Max

90

90

90

90

Mean

70

66

67

69

St. Dev

15

20

20

16

Max Temp (°C)

Min

335

514

551

335

Max

955

912

984

984

Mean

596

679

768

620

St. Dev

114

98

114

123

Strombolian explosions

Dates of explosions

9/11/2004

17/11/2004

Pit diameter

145 m

Magma free surface depth

80 m

Vent diameter

35 m

Pyroclast dispersion

> 100 m from the vent