4. Global Seismograph Network - GSN:

DATES OF OPERATION:	12 Oct 1990 to 07 Jul 1992.

SEISMOMETER TYPE AND DATA ACQUISITION SYSTEM:
Streckeisen Model STS-1/VBB 3 component system for broadband, long period 
and very long period channels and Teledyne Geotech Model GS-13 seismometers 
for triggered short period channels.  IDA MK6 data acquisition system. 

CALIBRATION EPOCH:	1990, 285 - 1992, 189

DIGITAL FORMAT:
32 bit integer words for all broadband (20 sps) and very long period (0.1 sps)
data and for synthesized long period (1 sps) data.  16 bit integer words for
short period (200 Hz) triggered data.

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