1. Global Seismograph Network - GSN:

DATES OF OPERATION:	24 May 1994 to Present.

SEISMOMETER TYPE AND ADC:
Teledyne Geotech Model KS54000 borehole 3 component system for broadband, long
period, very long period channels.  IDA MK7 data acquisition system. 

CALIBRATION EPOCHS:	1994, 144 to Present

DIGITAL FORMAT:  
32-bit integer data words for broadband (20 sps), long period (1 sps), very
long period (0.1 sps), and short period (40 sps) channels.

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