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Earth, Planets and Space

Table 2 Classification of pulses

From: Mass eruption rates in pulsating eruptions estimated from video analysis of the gas thrust-buoyancy transition—a case study of the 2010 eruption of Eyjafjallajökull, Iceland

Pulse type

d (m)

No. of pulses

Average t pulse (s)

Type 1 (strong)

>50

56

37.5

Type 2 („weaker“)

<50

446

4.7

  1. Strong (type 1) eruptive pulses that feature ash columns with a large diameter at the vent exit d are much less frequent than weaker (type 2) pulses
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