1. Digital Seismograph Network:   [ BK ]

DATES OF OPERATION:  27 Jul 1984 to 04 Oct 1986	

SEISMOMETER TYPE: 
Geotech Model SL-200 series long period three component system, and Geotech Model
S-13 for short period vertical.

DIGITAL FORMAT:
16 bit integer for all components.  Range: +32,767 to -32,768 digital counts.

EVENT DETECTOR ALGORITHM:  
The event detector used for the SHZ channel was developed at the ASL and is not
documented.  The mid-period channels are detected on a straight forward amplitude
basis.

Click on any of the following items for further information.

• Channel Data
• Amplitude Response to Ground Velocity
• Seismic Noise Study graph information
  • Seismic Noise Level - Annual
  • Seismic Noise Level - Seasonal/Diurnal

COMMENTS:
The seismograph system at Jamestown is similar to the DWWSN in sensitivity and
format, but uses different seismometers.  All data was telemetered to the University
of California at Berkeley where it is recorded.  The mid-period data experienced
some problems with telemetry causing occasional spiking.