Fig. 15
From: Phreatic eruptions at crater lakes: occurrence statistics and probabilistic hazard forecast
Frequency of eruption occurrence within 2 months after a temperature measurement, versus the observed lake temperature, based on data from 1940 to 2012. (a) For all eruption sizes and (b) depending on eruption size. Note that one data point has been excluded from the analysis: only one temperature measurement exists that showed a lake colder than 10 °C, and this was followed by an eruption of size 4 within 2 months. Including this one data point would skew the distribution towards an eruption frequency of 100% after a temperature measurement of less than 10 °C, which we discarded due to questionable significance