Fig. 4
From: Continuous estimates of heat emission at Mt. Ruapehu using the Unscented Kalman Smoother

a) Inference results for the heat input rate \(\dot{Q_i}\) at RCL between 4 March 2016 and 1 February 2022. The solid line shows the marginal probability and the uncertainty is displayed as shaded region; b) Continuous wavelet transform of the time series shown in a; c) Power spectral density of the heat input rate shown as a solid line with uncertainty displayed as shaded region