Pritchard and Simons present ERS-1 and -2 and RADARSAT data for northern Kamchatka between 1992 and 2003, although most volcanoes are only covered during the last three years. The authors state that they “do not observe deformation associated with eruptions that occurred during the time period of observation at […] Sheveluch, but because of the poor spatial and temporal coverage, only large signals would be detectable (see GSA Data Repository)”.
The Institute of Volcanology and Seismology (IVS FEB RAS) and Kamchatka Volcanic Eruption Response Team (KVERT) are responsible for monitoring volcanoes and providing aviation alerts.