a division of Zoltech Corporation

VolksMeter II

Seismometer/Tiltmeter

Current Activity

Redwood City, CA
(courtesy Larry Cochrane)

These Helicord records display the last 24 hours of activity measured by the VolksMeter II
 located at Webtronics' Redwood City, California USA facility.
The top record is the raw acceleration measurement.  The second record is the velocity, calculated by integrating the acceleration data.

Acceleration
  

Integrated (Velocity) data

These records are normally updated every 10 minutes.

16009 Arminta Street, Van Nuys, CA 91406 USA - 818-780-1800 - FAX 818-780-1978 - http://rllinstruments.com