Mount St Helens late-2023 earthquake heat map

Comparison of current seismicity to previous seismicity.  Upper left: Map of Mount St. Helens with a grayscale representing a digital elevation model.  Earthquakes interpreted as recharge between 1987 and 2004 are plotted as a heatmap of earthquake density.  Areas with a lot of earthquakes are in blue, while areas with fewer earthquakes are shown in oranges and browns. The earthquakes associated with the current episode are shown in orange.  Bottom left: Cross-section of the volcano looking north.  The topographic outline is shown as a black line at the top of the plot. Top right: Cross-section of the volcano looking west.  Other symbology is the same as other plots.