Fig. 5
From: Shallow pressure sources associated with the 2007 and 2014 phreatic eruptions of Mt. Ontake, Japan
Observed and calculated horizontal displacements of observation stations referred to GSI0609 as well as positions of estimated pressure sources around Mt. Ontake, November 2006 to January 2007. Vector of observation shows the difference between the average coordinate from November 1–30, 2006, and the average coordinate from January 21–31, 2007. a Modeled pressure source based on GEONET data alone. Ellipses show observation errors based on the standard deviation of daily coordinates during the observation period. b Modeled pressure sources based on GEONET and JMANET data