Hello Ian - Well, the Little Sitkin sensors are more better seismometers than anemometers would be. :) AVO seismologists also have some other ways of viewing and analyzing data to help tease out the seismic signal from wind noise. Thank you, Cheryl -------- Ian Macklin wrote: Would I be right in thinking that the sensor at Little Sitkin acts more as an anemometer than a seismograph? -- Cheryl Cameron Geologist, Alaska Volcano Observatory Alaska Division of Geological & Geophysical Surveys voice: 907-451-5012 fax: 907-451-5050