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Earth, Planets and Space
Fig. 9 | Earth, Planets and Space

Fig. 9

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

Fig. 9

Calculation of the pulse volume: The total volume of an ash pulse is composed of the visible top (V vis), and the hidden volume within the conduit (V con). By determining the pulse volume at transitional level V trans(t II), it is possible to approximate the total mass within the volume. During the studied period, the vent geometry is specified by a distance between source level and vent exit (vent depth) z of 51 ± 7 m and an inner diameter of 8–15 m (Dürig et al. 2015)

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